| Can Dynamic Bubble Templating Play a Role in Corrosion Product Morphology? |
Feb 2012 |
8 pages |
| Authors:
T L Gerke; Kirk G Scheckel; Richard I Ray; Brenda J Little; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
 | Dynamic templating as a result of cathodic hydrogen gas production is suggested as a possible mechanism for the formation of tube-like corrosion products on an unlined cast iron pipe in a drinking water distribution system. Mounds of corrosion product, with protruding tubes and freestanding tubes, were observed within a single 30 cm section of piping. Internal morphologies for all shapes were texturally complex although mineralogically simple, composed of two iron ... |
|
| Polyfibroblast: A Self-Healing and Galvanic Protection Additive |
25 APR 2011 |
10 pages |
| Authors:
Jason J. Benkoski; JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB
|
| The goal of this project is to develop a primer additive that mimics the self-healing ability of skin by forming a polymer scar across scratches. Designed to work with existing military grade primers, Polyfibroblast consists of microscopic, hollow zinc tubes filled with a moisture-cured polyurethane-urea (MCPU). When scratched, the foaming action of a propellant ejects the resin from the broken tubes and completely fills the crack. No catalysts or curing ... |
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| Measurement and Model Predicted Corrosion Related Magnetic Signature: Applied on CFAV Quest |
Oct 2010 |
34 pages |
| Authors:
Marius Birsan; DEFENCE RESEARCH AND DEVELOPMENT ATLANTIC DARTMOUTH (CANADA)
|
| In simple terms the corrosion related magnetic (CRM) field arises due to the flow of corrosion currents through the sea water. This current density has many sources with one of the most prominent being the currents that arise due to the corrosion of the metal work of the ship. Various corrosion countermeasures, for example an impressed current cathodic protection (ICCP) system, also directly affect the current density and hence an ... |
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| Corrosion Mitigation Strategies - an Introduction |
05-Feb-2009 |
72 pages |
| Authors:
Joe Curran; NATIONAL ASSOCIATION OF CORROSION ENGINEERS HOUSTON TX
|
| METHODS OF CORROSION CONTROL -- SUMMARY: Design * Materials Selection * Protective Coatings * Cathodic Protection * Modification of Environment. |
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| AC-Induced Bias Potential Effect on Corrosion of Steels |
05-Feb-2009 |
38 pages |
| Authors:
J E Jackson; A N Lasseigne; D L Olson; B Mishra; GENERATION 2 MATERIALS TECHNOLOGY LLC FIRESTONE CO
|
| Overview of briefing charts: Background, Literature review, Magnetocorrosion JIP, Proposed AC Corrosion Models, AC Simulated Corrosion testing, Stainless steel pipe and coating, Cathodic protection, Experimental setup, Preliminary test arrangement, Current test arrangement, Experimental analysis techniques, Assessment of models and Proposed Research. |
|
| Novel Corrosion Control Coating Utilizing Carbon Nanotechnology |
Feb-2009 |
23 pages |
| Authors:
Susan A Drozdz; Todd Hawkins; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| This briefing describes a novel corrosion control coating that consists of a epoxy/polyurethane system using single wall carbon nanotubes. |
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| Single High Fidelity Geometric Data Sets for LCM - Model Requirements |
NOV 2006 |
100 pages |
| Authors:
D. Brennan; T. Koko; K. Mackay; M. Norwood; S. Tobin; E. TENG; J. Wallace; MARTEC LIMITED HALIFAX (NOVA SCOTIA)
|
| Over the past decade, the ship building industry has begun to develop and use Single Product Models (SPMs) for improving the management and efficiency of design, analysis and construction of commercial and naval vessels. SPMs are extensive single 3D CAD data models incorporating hull structure, propulsion, steering, piping, electrical, HVAC and other systems, which make up a complete ship. Ship classification societies and navies (most notably the USN in their ... |
|
| Strategies for Mitigation of Hydrogen Environment Assisted Cracking of High Strength Steels |
2006 |
|
| Authors:
John R. Scully; Beth A. Kehler; Yongwon Lee; Richard P. Gangloff; NATIONAL ASSOCIATION OF CORROSION ENGINEERS HOUSTON TX
|
 | Modem ultra high strength alloy steels (UHSS) have been developed with outstanding combinations of strength and fracture toughness. Such steels are characterized by high purity and nanoscale strengthening clusters/coherent precipitates in a complex precipitation hardened, martensitic microstructure. However, the performance of such steels is degraded dramatically by internal hydrogen embrittlement (IHE) and hydrogen environment embrittlement (HEE). Thus, the development of an UHSS that is immune to hydrogen embrittlement is of ... |
|
| Electrochemical Mitigation of hydrogen Environment Embrittlement of Ultra-High Strength AerMet(Trademark) 100 |
2006 |
29 pages |
| Authors:
Samil Al-Ghamdi; John R. Scully; VIRGINIA UNIV CHARLOTTESVILLE OFFICE OF SPONSORED PROGRAMS
|
| The goal of this research is to extend the potential region of high toughness in an ultra-high strength steel (UHSS) to anodic and cathodic potentials where hydrogen environment embrittlement (HEE) is normally observed due to hydrogen uptake in the absence of inhibitors. This is being explored through the investigation of several selected chemical inhibitors (anodic inhibitors and cathodic blocking agents). The research is conducted in three stages. The effect of ... |
|
| Fury: Robotic In-Situ Inspection/Condition Assessment System for Underground Storage Tanks |
MAR 2004 |
38 pages |
| Authors:
Charles P. Marsh; Amer Siddique; Brian Temple; Vincent M. Hock; Frank Robb; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| The Code of Federal Regulations (40 CFR 280-281) required all underground storage tanks (USTs) containing petroleum products to be brought into compliance to prevent environmental contamination through leakage. Replacing all older USTs can, in some cases, be prohibitively expensive. One alternative to requiring that tanks pass a precision tightness test is to retrofit USTs with cathodic protection for continued use. This report introduced a remote, robotic UST condition inspection/assessment system ... |
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| Seawater Crevice Corrosion Resistance of Stainless Steels Coated with Silane and Antifouling Paint Systems |
AUG 2002 |
100 pages |
| Authors:
Robert M. Kain; LAQUE CENTER FOR CORROSION TECHNOLOGY INC WRIGHTSVILLE BEACH NC
|
| Normally, stainless steel is utilized without any type of coating whatsoever. However, there are occasions where coatings may be contemplated. One of present interest to the U.S. Navy is that associated with the use of antifouling coatings on ship hulls fabricated of non-magnetic, austenitic stainless steel. Testing in natural seawater has demonstrated that coatings can protect susceptible stainless steel from barnacle related crevice corrosion and localized corrosion at weldments. However, ... |
|
| Marine Bacteria and Localized Corrosion on Polymer Coated Steel: Cause and Effect |
27 MAR 2001 |
11 pages |
| Authors:
Brenda J. Little; RIchard I. Ray; Patricia A. Wagner; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Diagnosis of microbiologically influenced corrosion on iron- containing substrata exposed in marine environment cannot be based solely on spatial relationships between large accumulations of bacterial cells and iron corrosion products. Field experiments were designed to evaluate the relationship between marine bacteria and localized corrosion and coated mild steel. In all cases, the distribution of bacteria was strongly influenced by the presence of iron corrosion products independent of coating combinations. In ... |
|
| Comprehensive Monitoring and Evaluation of Ballast Tank Coatings Integrity for Life Prediction and Condition Based Maintenance |
29 SEP 2000 |
15 pages |
| Authors:
K. E. Lucas; P. F. Slebodnick; E. A. Hogan; E. D. Thomas; A. I. Kaznoff; NAVAL RESEARCH LAB WASHINGTON DC MATERIAL SCIENCE AND TECHNOLOGY DIV
|
| Navy maintenance costs for seawater ballast tank preservation continue to increase, concurrent with a corresponding growth in the time interval between overhaul cycles. To reduce the high cost of manned seawater ballast tank inspections, corrosion potential and current sensors have been developed to monitor changes in the tank cathodic protection levels and zinc anode current requirements over time. When combined with remote optical inspection ... |
|
| USS Virginia Ballast Tank Connector Qualification Study |
29 SEP 2000 |
16 pages |
| Authors:
K. E. Lucas; E. A. Hogan; P. F. Slebodnick; E. D. Thomas; A. Seelinger; NAVAL RESEARCH LAB WASHINGTON DC MATERIAL SCIENCE AND TECHNOLOGY DIV
|
| With the incorporation of impressed current cathodic protection (ICCP) into the main ballast tanks (MBT) aboard the USS Virginia class hulls, it was necessary to design components which would provide optimal performance and durability within the harsh environment. As part of this effort, new ballast tank anodes were selected, which consist of a platinized niobium surface extruded over a conductive copper core. This anode style is ... |
|
| Advanced Thermal Barrier Coating |
APR 2000 |
37 pages |
| Authors:
Rabi S. Bhattacharya; UNIVERSAL ENERGY SYSTEMS INC DAYTON OH
|
| The primary research objective of this work was to develop a novel thermal barrier coating (TEC) system by depositing a high quality alpha alumina sublayer on the metallic bond-coat, prior to the deposition of the yttria stabilized zirconia (YSZ) coating. A patented filtered cathodic arc deposition equipment was used to deposit an alpha alumina layer on a superalloy that was plasma-spray coated with a NiCoCrAlY ... |
|
| Investigating the Crevice Corrosion Behavior of Coated Stainless Steel in Seawater |
FEB 2000 |
213 pages |
| Authors:
Robert M. Kain; LAQUE CENTER FOR CORROSION TECHNOLOGY INC WRIGHTSVILLE BEACH NC
|
| Normally, stainless steel is utilized without any type of coating whatsoever. However, there are occasions where coatings may be contemplated. One of present interest to the U.S. Navy is that associated with the use of antifouling coatings on ship hulls fabricated of non-magnetic. austenitic stainless steel. Testing in natural seawater has demonstrated that coatings can protect susceptible stainless steel from barnacle related crevice corrosion and ... |
|
| Advanced Measures to Control Galvanic Corrosion in Piping Systems |
AUG 1999 |
92 pages |
| Authors:
David A. Shifler; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SURVIVABILITY STRUCTURES AND MATERIALS DIRECTORATE
|
| Mixtures of piping materials have been used in several piping systems during ship retrofitting. The use of dissimilar alloys may initiate galvanic corrosion of the more anodic member which could lead to piping failures. Several control methods have been applied which may introduce secondary corrosion and require periodic inspection and replacement. This study investigated several newer galvanic corrosion control (cathodic protection, barrier coatings, bi- electrode) methods, by the use of ... |
|
| New Theories for Erosion-Corrosion |
05 JUN 1999 |
125 pages |
| Authors:
Mark E. Orazem; FLORIDA UNIV GAINESVILLE DEPT OF CHEMICAL ENGINEERING
|
| The erosion-corrosion of copper and copper-nickel alloys in syntheticseawater was investigated using an impinging jet. Video microscopy, corrosion potential monitoring, and impedance spectroscopy were used to investigate the state of the system and the reactivity of the electrode surface. Shear-induced removal of salt films was observed and found to be associated with significant increases in surface reactivity. Direct shear-induced removal of oxide films, however, was not observed. Nevertheless, the protective ... |
|
| The Use of Thermal Spraying to Enhance the Bonding Characteristics of a Urethane Coated Propeller. A Trident Scholar Project Report, No. 265 |
03 MAY 1999 |
68 pages |
| Authors:
Corey A. Poorman; NAVAL ACADEMY ANNAPOLIS MD
|
| In order to reduce the cost and machining time of producing propeller blades, the Naval Surface Warfare Center, NSWC, has developed an alternative production method for propeller blades. The alternative production method consisted of a Nickel-Aluminum-Bronze (NAB) blade, covered by two coats of paint and a urethane coating. After exposure to seawater and impressed current cathodic protection, the bond between the paint and the NAB substrate failed ... |
|
| The Impact of Microbiologically Influenced Corrosion on Protective Polymer Coatings |
AUG 1998 |
45 pages |
| Authors:
F. Mansfield; C. C. Lee; L. T. Han; G. Zhang; B. Little; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF MATERIALS SCIENCE AND ENGINEERING
|
| Mild steel panels protected with twelve different polymer coating systems have been exposed to natural seawater (NS) at Port Hueneme, CA and Key West, FL and to artificial seawater (AS) in laboratory tests. Coating performance was monitored using electrochemical impedance spectroscopy (EIS) and electrochemical noise analysis (ENA) as well as visual observations. Statistical analyses have been performed to determine the effects of coating composition on ... |
|
| 1997 Tri-Service Conference on Corrosion, November 17-21, 1997, Blockade Runner Hotel, Wrightsville Beach, NC. Vol. 1 - Proceedings |
21 NOV 1997 |
573 pages |
| Authors:
Gordon R. Holcomb; Bernard S. Covino Jr; Stephen D. Cramer; Sophie J. Bullard; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| The Tri-Service Conference on Corrosion has been an interservice coordination in the area of corrosion research and corrosion control. The first conference, arranged by the U.S. Air Force, was held in Denver in 1967. This was followed by an organized meeting by the U.S. Navy at Annapolis in 1969, and the U.S. Army at Houston in 1972. Since 1972, one of the services has taken the lead in organizing the ... |
|
| 1997 Tri-Service Conference on Corrosion, November 17-21, 1997, Blockade Runner Hotel, Wrightsville Beach, NC. Vol. 2 - Proceedings |
21 NOV 97 |
582 pages |
| Authors:
Gordon R. Holcomb; Bernard S. Covino Jr; Stephen D. Cramer; Sophie J. Bullard; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| Several protection strategies for coastal infrastructure using thermal-spray technology are presented from research at the Albany Research Center. Thermal-sprayed zinc coatings for anodes in impressed current cathodic protection systems are used to extend the service lives of reinforced concrete bridges along the Oregon coast. Thermal-sprayed Ti is examined as an alternative to the consumable zinc anode. Sealed thermal-sprayed A1 is examined as an alternative coating to zinc dust filled polyurethane ... |
|
| Micro-Mechanisms of Corrosion Fatigue Using Atomic Force Microscopy at Active Microstructural Sites on 2024-T3 Aluminum |
22 OCT 96 |
45 pages |
| Authors:
Campbell Laird; John J. DeLuccia; PENNSYLVANIA UNIV PHILADELPHIA
|
| This is a final report summarizing a one-year effort to define the micro-mechanisms of corrosion fatigue of 2024-T3 sheet aluminum alloy in low pH environments using in-situ and ex-situ instrumentation, e. g., atomic force microscopy (AFM), scanning electron microscopy, and Auger spectroscopy. Constant stress, flexure fatigue specimens cycled in a unique mechanically driven, environmentally controlled, deformation stage, are electrochemically polished to exhibit uniform quality metallographic surfaces. Pertinent surface microstructural features ... |
|
| Corrosion Control of Inter-Hull Spaces |
JAN 96 |
124 pages |
| Authors:
M. Kikuta; M. Shimko; D. Ciscon; ROSENBLATT (M) AND SON INC ARLINGTON VA
|
| This report expands upon the work conducted by the U.S. Navy to develop a tank preservation protocol with a service life of 15 to 20 years. This report focuses on controlling corrosion in the region between the inner and outer hulls in new double hull designs. This area is treated as either a void or a seawater ballast tank. The Oil Pollution Act of 1990 has precipitated increased interest by ... |
|
| Characterization of Hydrogen Ingress in High-Strength Alloys |
NOV 95 |
107 pages |
| Authors:
Bruce G. Pound; SRI INTERNATIONAL MENLO PARK CA
|
| The ingress of hydrogen (H) in various high-strength alloys was investigated with a view to characterizing their susceptibility to hydrogen embrittlement (HE). A potentiostatic pulse technique was applied to three Fe- base alloys (AerMet 100, H11, and A-286), two Cu-containing alloys (Be-Cu and alloy K-500), a superferritic stainless steel (Sea-Cure), and three Beta-Ti alloys (Ti-15V-3Cr-3Al-3Sn, Beta-21S, and Beta-C) in 1 mol/L acetic acid-1 mol/L sodium acetate. The data were analyzed ... |
|
| Cathodic Protection Criterion for a New Hull Steel |
JUL 95 |
|
| Authors:
B. T. Moore; B. S. Smith; DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)
|
| The minimum potential required for complete cathodic protection has been determined for BIS 812 EMA steel which is being used for the main pressure hull of the Royal Australian Navy's Collins class submarine. The experimental method provided plots of weight loss versus applied potential for both BIS 812 EMA steel and the traditional HY80 steel over appropriate potential ranges. These were decided from determinations of the corrosion potentials of the ... |
|
| Cathodic Protection System Design 2. Electrolyte Resistivity Measurement |
JUN 95 |
4 pages |
| Authors:
Jim Jenkins; NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
|
| Electrolyte resistivity is an important parameter in the design of cathodic protection systems. As cathodic protection systems are essentially direct current electrical circuits, the currents that flow in the circuits depend on the electrical resistance between the circuit elements. Electrolyte resistivity differs from resistance in that resistivity is a characteristic of a material whereas the actual resistance depends on both resistivity of the material and the geometry of the current ... |
|
| Cathodic Protection System Design 3. Sacrificial Anode System Design Principles for Underground Structures |
JUN 95 |
3 pages |
| Authors:
Jim Jenkins; NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
|
| The most common application of cathodic protection is controlling corrosion on buried structures, such as pipelines and storage tanks. For underground structures, both impressed current and sacrificial anode cathodic protection systems are feasible and the most appropriate system is chosen based on life cycle cost for the system. |
|
| Cathodic Protection System Design 1. The Pre-Design Field Survey |
JUN 95 |
5 pages |
| Authors:
Jim Jenkins; NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
|
| There arc two basic scenarios for the design of cathodic protection systems: designing cathodic protection of a new facility and retrofitting the cathodic protection of an existing facility. In both cases, it is necessary to determine many site and facility specific factors in order to design a successful cathodic protection system. |
|
| Thermal Energy Supply Optimization for Aberdeen Proving Ground - Edgewood Area. Distribution System Condition Assessment and Recommendations |
MAY 95 |
225 pages |
| Authors:
Vicki L. Van Blaricum; Charles P. Marsh; Vincent F. Hock; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| This report documents the results of a study by the U.S. Army Construction Engineering Research Laboratories to assess the condition of the steam heat distribution system at Aberdeen Proving Ground (APG)-Edgewood Area (EA), MD. This report documents the portion of the study that addressed widespread corrosion and deterioration existing throughout the aging system. A physical inventory of the steam distribution system piping and manholes was conducted. A visual condition assessment ... |
|
| Computational Modeling of Coating Integrity Effects on Impressed Current Cathodic Protection System |
28 MAR 95 |
16 pages |
| Authors:
Virginia G. DeGiorgi; C. P. Hamilton; NAVAL RESEARCH LAB WASHINGTON DC
|
| Coatings are often used in conjunction with impressed current cathodic protection (ICCP) systems to minimize the effect of corrosion on marine structures. The presence of a coating reduces the current required by an ICCP system. The integrity and efficiency of the coating determines the level of current reduction achieved over the bare metal condition. One of the difficulties is designing a combined coating and ICCP system is that coatings deteriorate ... |
|
| Prediction of Hydrogen Entry and Permeation in Metals and Alloys |
FEB 95 |
45 pages |
| Authors:
Howard W. Pickering; PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MATERIALS SCIENCE AND ENGINEE RING
|
| This report summarizes results of the past year on our continuing experiments directed to the problem of hydrogen entry and degradation of materials both of planar surfaces and for the more complicated recessed surface. For the planar surface the hydrogen permeation and scanning tunneling microscopy (STM) techniques were used, and for the recessed surface the study used the hydrogen permeation technique and a microscopy/electrochemical probe technique. Microstructural effects and the ... |
|
| Laboratory Evaluation of Fusion-Bonded Epoxy Coatings for Civil Works Applications |
JAN 95 |
33 pages |
| Authors:
Timothy D. Race; Jeffrey H. Boy; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL ENGINEERING AND MA TERIALS DIV
|
| This study investigates safer, more cost-effective alternatives to U. S. Army Corps of Engineers paint specification C-200A, Coal Tar Epoxy Coating, which is used to protect steel sheet piling. Fusion-bonded epoxy, a nonpolluting shop-applied coating, was evaluated in laboratory tests as a potential replacement for C-200A. Laboratory tests that included salt and fresh water immersion, cyclic salt fog/ultraviolet (UV) condensation, impact resistance, and cathodic disbondment were conducted on four fusion-bonded ... |
|
| Evaluation of a Diffusion/Trapping Model for Hydrogen Ingress in High- Strength Alloys. |
NOV 1994 |
69 pages |
| Authors:
Bruce G. Pound; SRI INTERNATIONAL MENLO PARK CA
|
| The ingress of hydrogen in various high-strength alloys was investigated with a view to characterizing their susceptibility to hydrogen embrittlement (HE). A potentiostatic pulse technique was applied to two precipitation-hardened iron-base alloys (AerMet 100 and alloy A-286), two Cu- containing alloys (Be-Cu and alloy K-500), and a superferritic stainless steel (UNS 544660) in 1 mol/L acetic acid-1 mol/L sodium acetate. The data were analyzed using a diffusion/trapping model to obtain ... |
|
| Photovoltaic Systems for Government Agencies |
FEB 1994 |
37 pages |
| Authors:
Michael G. Thomas; Harold N. Post; Anne Vanarsdall; SANDIA NATIONAL LABS ALBUQUERQUE NM
|
| All around the country photovoltaic systems are providing reliable power for lighting, communications, remote site electrification, remote monitoring, warning signs, water pumping, restroom facilities, vehicle battery charging, cathodic protection and facility power. It is no wonder that photovoltaic power supplies are now the standard for many agencies. The U.S. Coast Guard uses photovoltaic power exclusively for its remote navigation aids. The National Park Service ... |
|
| Preceedings of the International Congress (12th), Corrosion Control for Low-Cost Reliability, Held in Houston, Texas on September 19 -24, 1993. Volume 5A. Corrosion: Specific Issues |
24 SEP 93 |
493 pages |
| Authors:
NATIONAL ASSOCIATION OF CORROSION ENGINEERS HOUSTON TX
|
| Partial contents include: (1) The role of corrosion in aging aircraft; (2) Hidden corrosion - needs and requirements; (3) Corrosion control as a necessary treatment; (4) Computer assisted aircraft paint stripping technology; (5) Reducing aircraft corrosion with desiccant dehumidifiers; (6) Corrosion contribution to environmental cracking failures of critical aircraft parts; (7) Designing metallic surface coatings for improved corrosion resistance; (8) Development of chromium based composite coatings; (9) In-situ analysis of ... |
|
| Corrosion Assessment of an Army Installation Gas Distribution System Using MicroGPIPER |
JAN 93 |
40 pages |
| Authors:
Vicki L. Van Blaricum; Vincent F. Hock; Lewis F. Setliff; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| The MicroGPIPER program has been developed by the U. S. Army Construction Engineering Research Laboratories (USACERL) to assist Army installation Directorates of Engineering and Housing (DEHs) in prioritizing sections of underground natural gas distribution piping for maintenance and repair. The prioritization is generated from data collected from field evaluation of the gas distribution and cathodic protection systems, as well as laboratory evaluation of soil samples. The MicroGPIPER program was used ... |
|
| Evaluation of New Surface Preparation and Coating Repair Techniques in Ballast Tanks |
JAN 1993 |
32 pages |
| Authors:
Lynwood Haumschilt; DAVID TAYLOR RESEARCH CENTER BETHESDA MD
|
| Ship ballast tanks offer unique corrosion control challenges. Being subjected to intermittent wet and dry cycles of aerated sea water places an extreme demand on corrosion control methods. Harsh service environments are coupled with necessarily complex tank geometries, especially in Navy combatants where weight and hull designs dictate small, irregular tanks with limited accessibility. These difficulties equate to costly corrosion control techniques. The NSRP SP-3 Panel recognized these problems and ... |
|
| Control Strategies for Zebra Mussel Infestations at Public Facilities |
JUL 92 |
36 pages |
| Authors:
Andrew C. Miller; Barry S. Payne; Frank Neilson; Robert F. McMahon; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| On September 16-18, 1991, the U.S. Army Corps of Engineers held a meeting in Ft. Mitchell, KY (near Cincinnati, OH), to develop strategies for the detection and control of zebra mussels. More than 50 scientists and engineers prepared a preliminary list of strategies to deal with zebra mussel infestations at public facilities. It was decided that sites where zebra mussel infestations would be most apparent were components of (1) navigation ... |
|
| Automated Underwater Hull Maintenance Vehicle |
MAY 92 |
28 pages |
| Authors:
Gerald S. Bohlander; Gilbert Hageman; Frank S. Halliwell; Raymond H. Juers; Dana C. Lynn; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SYSTEMS DEPT
|
| The maintenance and repair of the underwater hulls of Navy ships is expensive and labor intensive. While the introduction of effective epoxy anticorrosive paints and improved ablative antifouling paints have contributed to lengthening the time between dyrdocking, needed repair work is often not discovered until the ship is in drydock. In addition, the U.S. Navy has implemented cuprous oxide containing ablative antifouling paints to replace the standard antifouling paint (F ... |
|
| Corrosion Protection of Steel and Bond Durability at Polyphenylene Sulfide-to-Anhydrous Zinc Phosphate Interfaces |
Jan-1992 |
12 pages |
| Authors:
T Sugama; N R Carciello; BROOKHAVEN NATIONAL LAB UPTON NY DEPT OF APPLIED SCIENCE
|
| To enhance the performance of high-temperature polyphenylene sulfide (PPS) coating in protecting steels from corrosion, the cold-rolled steel surfaces were prepared with anhydrous zinc phosphate (Zn . Ph) conversion coatings containing poly (acid) anhydride as an interfacial tailoring material. The factors contributing to the formation of a good bond at the PPS/Zn . Ph joints were as follows: (1) the chemical reaction of PPS with Fe203 in the Zn . ... |
|
| A Study of Electrochemical Efficiencies of Aluminium Galvanic Anodes in Sea Water |
92 |
|
| Authors:
J. J. Batten; B. T. Moore; B. S. Smith; DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)
|
| Current commercial Al-Zn-In alloy aluminum anodes designated A1 and A4 in Australian Standard 2239 show promise as relatively light galvanic anodes for use in sea water cathodic protection systems. Field service studies (i.e. long-term testing) showed that electrochemical efficiencies of these anodes often exceeded 80%. On the other hand, anodes of similar composition but alloyed with magnesium (designated A2) had a relatively poor efficiency in this test. When tested in ... |
|
| Cathodic Protection Diagnostic Computer Program for Sacrificial and Impressed Current Systems: Overview and User's Manual |
SEP 91 |
152 pages |
| Authors:
Vicki L. Van Blaricum; C. D. Page Jr.; Kim Reinke; Ashok Kumar; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| The total of corrosion at Army facilities is a significant percentage of maintenance and repair budgets. Corrosion in underground gas piping is particularly costly because pipe damage is difficult to determine or assess until a leak occurs. Cost effective maintenance of underground gas piping and other structures requires that cathodic protection (CP) systems operate properly and that some measure of current and projected pipe condition be available. To meet this ... |
|
| Causes and Control of Corrosion in Buried-Conduit Heat Distribution Systems |
JUL 91 |
42 pages |
| Authors:
James R. Meyers; Ellen G. Segan; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| Heat distribution systems using buried conduit are extremely vulnerable to premature failure due to corrosion. The objective of this work was to evaluate the causes and determine methods of controlling corrosion in these systems. Heat distribution systems at several military installations were studied to identify common problems. This research indicated that corrosion can be mitigated by (1) reducing the amounts of dissolved carbon dioxide and oxygen developing specifications that limit ... |
|
| Evaluation and Repair of Concrete Structures: Annotated Bibliography 1978 - 1988. Volume 2. ( Repair, Evaluation, Maintenance and Rehabilitation Research Program) |
JUN 91 |
438 pages |
| Authors:
James E. McDonald; Willie E. McDonald; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| A partial list of topics covered in this bibliography are deterioration, bonding, bridges, buildings, cathodic protection, coatings, corrosion resistance, cracking(fracturing), freezing/thawing, soil structure interactions, hydraulic structures, joints, maintenance, repair, nondestructive testing, chemical analysis, patching, pavements, polymers, epoxy resins, shrinkage, spallation, and underwater structures. |
|
| Evaluation of New Surface Preparation and Coating Repair Techniques in Ballast Tanks Interim Report (Three Year Results) |
MAY 1991 |
27 pages |
| Authors:
NATIONAL STEEL AND SHIPBUILDING CO SAN DIEGO CA
|
| Ship ballast tanks present special problems as concerns corrosion control. In addition, ballast tanks are one of the most costly areas in which to apply coatings in both new ship construction and ship maintenance. Being subjected to intermittent wet and dry cycles of aerated sea water places extreme demands on corrosion control methods. Harsh service environments are coupled with necessarily complex tank geometries, especially in Navy combatants where weight and ... |
|
| COPING WITH CHEMICALS. |
25 FEB 1991 |
|
| Authors:
LISA BEYER; TIME MAGAZINE NEW YORK*
|
| DURING THE GULF WAR OF 1990-91, ALSO KNOWN AS OPERATIONS DESERT SHIELD AND DESERT STORM, THERE WAS GREAT CONCERN OVER A POSSIBLE IRAQI ASSAULT WITH CHEMICAL WEAPONS ON THE ALLIED FORCES. THIS ARTICLE LOOKS AT THE POSSIBILITY AND PROBABILITY OF IRAQ USING THESE WEAPONS AND THE QUESTION OF HOW SUCCESSFUL THE DELIVERY OF THESE WEAPONS WILL BE. |
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| CHEMICAL WEPAONS DISPOSAL: DAUNTING CHALLENGES STILL AHEAD. |
13 AUG 1990 |
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| Authors:
LOIS R. EMBER
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| THE UNITED STATES AND THE USSR ARE WORKING TOWARDS CHEMICAL DISARMAMENT PRODDED BY DEADLINES SET BY NATIONAL LAWS AND BILATERAL AGREEMENTS. BOTH COUNTRIES ARE FINDING THEIR WEAPONS DISPOSAL EFFORTS HAMPERED BY CAPRICIOUS TECHNOLOGY, UNCERTAIN POLICY AND OUTRAGED ENVIRONMENTALISTS. THIS ARTICLE LOOKS AT THE HURDLES THE UNITED STATES HAS ENCOUNTERED IN THE ATTEMPTS TO REMOVE UNITED STATES STOCKPILES OF CHEMICAL WEAPONS FROM GERMANY AND SEVERAL SITES AROUND THE UNITED STATES, AND ... |
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| Evaluation of New Surface Preparation and Coating Repair Techniques in Ballast Tanks |
JUL 1990 |
36 pages |
| Authors:
NATIONAL STEEL AND SHIPBUILDING CO SAN DIEGO CA
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| Ship ballast tanks present special problems as concerns corrosion control. In addition, ballast tanks are one of the most costly areas in which to apply coatings in both new ship construction and ship maintenance. Being subjected to intermittent wet and dry cycles of aerated sea water places extreme demands on corrosion control methods. Harsh service environments are coupled with necessarily complex tank geometries, especially in Navy combatants where weight and ... |
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| THE OPTION OF USING CHEMICAL WEAPONS. |
JUN 1990 |
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| Authors:
ROLF EKEUS; FEDERATION OF AMERICAN SCIENTISTS WASHINGTON DC*
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| THE GENEVA PROTOCOL OF 1925 PROHIBITS THE USE OF CHEMICAL WEAPONS. A NUMBER OF STATES PARTIES HAVE, HOWEVER, RESERVED A RIGHT TO SECOND USE OR TO RETALIATION IN KIND WITH CHEMICAL WEAPONS. AMONG THEM ARE THE UNITED STATES AND THE SOVIET UNION. THE RETALIATORY USE OF CHEMICAL WEAPONS REQUIRES THE MAINTENANCE AND PROMPT ACCESSIBILITY OF USEABLE WEAPONS, THE TRAINING OF MILITARY PERSONNEL IN THEIR USE, THE ELABORATION OF USE SCENARIOS ... |
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Reports by Keyword(s)
CATHODIC PROTECTION
