| Physical and Mechanical Properties and Fire, Decay, and Termite Resistance of Treated Oriented Strandboard |
MAY 2005 |
9 pages |
| Authors:
Nadir Ayrilmis; S. N. Kartal; Theodore L. Laufenberg; Jerrold E. Winandy; Robert H. White; DEPARTMENT OF AGRICULTURE MADISON WI
|
 | This study evaluated the effects of a number of chemicals on the physical and mechanical properties and fire, decay, and termite resistance of oriented strand board (OSB) panels. Disodium octaborate tetrahydrate (DOT), boric acid (BA), melamine phosphate (MP), and a BA/DOT mixture were sprayed onto the furnish at varying concentrations. The panels were tested for thickness swell, eater absorption, modulus of rupture, modulus of elasticity, and internal bond strength according ... |
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| Development of a Reproductive Toxicity Test Using Xenopus |
MAY 2000 |
111 pages |
| Authors:
Douglas J. Fort; John A. Bantle; OKLAHOMA STATE UNIV STILLWATER
|
| Current reproductive toxicity tests may be missing significant toxicity by not examining the gametes of both male and female organisms. The purpose of the present study was to develop and validate a reproductive toxicity test using Xenopus laevis which measures effects on gametogenesis, reproductive performance, and development fitness of the progeny. Sexually mature female and male Xenopus laevis were exposed to varying concentrations of cadmium chloride ... |
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| A Comparison of Alternatives to Chromic Acid Anodizing, Tri-Service Committee on Corrosion Proceedings Held in Orlando, Florida on June 21-23 1994 |
JUN 94 |
14 pages |
| Authors:
Stephen J. Spadafora; Frank R. Pepe; TRI-SERVICE COMMITTEE ON CORROSION WRIGHT-PATTERSON AFB OH
|
| Chromic acid anodizing (CAA) is an aluminum surface pretreatment currently used on military aircraft and equipment. Chromium VI, present in this process, is a carcinogen and federal, state and local environmental agencies have implemented legislation which restricts the use of this material. The Naval Air Warfare Center Aircraft Division Warminster investigated several alternatives to CAA including: Sulfuric-Boric Acid Anodize, Sulfuric Acid Anodizing, and Phosphoric Acid Anodizing. Physical performance properties of ... |
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| Optical Studies of Glasses Embedded With Inorganic Ions and Organic Dyes |
22 JUL 93 |
105 pages |
| Authors:
B. R. Reddy; ALABAMA A AND M UNIV NORMAL
|
| We performed optical studies of organic dye doped glasses and rare earth ion doped glasses. We doped several organic dyes in boric acid, sucrose and polycarbonate hosts and detected phase conjugate signals from all these samples. Sucrose samples are hygroscopic and hence are useful for characterizing dyes only. Boric acid samples were damaged even at moderate laser powers. On the other hand polycarbonate samples could withstand high input powers and ... |
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| A Comparison of Sulfuric Acid/Boric Acid Anodize and Chromic Acid Anodize Processes |
22 JUN 93 |
22 pages |
| Authors:
Stephen J. Spadafora; Frank R. Pepe; NAVAL AIR WARFARE CENTER AIRCRAFT DIV WARMINSTER PA AIR VEHICLE AND CREW SYST EMS TECHNOLOGY DEPT
|
| Chromic acid anodizing (CAA) is an aluminum surface pretreatment currently used on Navy aircraft and weapon systems. This anodize process forms a thick oxide film which provides protection against environmental degradation. This is particularly important due to the severely corrosive naval aviation operational environment. Chromium VI, however, is a carcinogen and its wide spread use as a corrosion inhibitor in this process is being restricted. The Navy has targeted chromated ... |
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| Spectral Hole Burning Between 2 K and Room Temperature in Sm2+ Doped Substitutionally Disordered Microcrystals, |
22 MAY 1992 |
|
| Authors:
R. Bilmers; J. Davis; M. Squicciarini; NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA
|
 | Filter operation is achieved by depleting the ground state population of molecules whose local environments are within the bandwidth of the hole-burning pump laser. Hole-burning is achieved in these systems via a mechanism known as triplet-trapping which is shown in Figure l. The first step in this mechanism is absorption from the ground singlet state, S sub 0, to the-first excited singlet state, S sub 1, in the dye molecule. ... |
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| Reactions of Some Boron Heterocycles with Pyrazole |
MAR 89 |
19 pages |
| Authors:
C. Habben; L. Komorowski; W. Maringgele; A. Meller; K. Niedenzu; KENTUCKY UNIV LEXINGTON DEPT OF CHEMISTRY
|
| There exist three principal types of neutral heterocyclic pyrazole ( = Hpz) derivatives containing two four-coordinate annular boron atoms. The pyrazaboles of type 1 have been known for more than two decades. They contain the skeleton >B(mu-pz)2B< and almost 100 different B- and/or C-substituted derivatives have been described. Triply bridged pyrazaboles of type 2 with X=- OBRO- were accidentally discovered in recent studies on the interaction of boroxins, (-RBO-)3, with ... |
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| Application of Laser-Induced Fluorescence in an Atmospheric-Pressure Boron-Seeded Flame |
DEC 87 |
|
| Authors:
Greg R. Schneider; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| The purpose of this research was to demonstrate the feasibility of using laser-induced fluorescence (LIF) of boron oxide radicals in atmospheric- pressure flames. Such a demonstration would provide a useful tool with which to probe the detailed combustion chemistry of boron fuels. The radical species sought were BO2 and BO, both having spectra in the visible region of the spectrum. These two species are believed to play critical roles in ... |
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| Global Model for Sound Absorption in Sea Water. Part 3. Arctic Regions |
14 MAY 87 |
43 pages |
| Authors:
R. H. Mellen; P. M. Scheifele; D. G. Browning; NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT NEW LONDON LAB
|
| Sound absorption in sea water is known to be caused by ionic relaxations involving magnesium sulfate, boric acid and magnesium carbonate. Absorption is regionally dependent, due mainly to the pH-dependence of the boric acid relaxation. In the nominal sea-water pH range 7.7-8.3, the magnitude increases by roughly a factor of four at the lower frequencies. Since pH varies with depth as well as location, absorption also depends on the ray ... |
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| Global Model for Sound Absorption in Sea Water. Part 2. GEOSECS pH Data Analysis |
14 MAY 87 |
68 pages |
| Authors:
R. H. Mellen; P. M. Schiefele; D. G. Browning; NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT NEW LONDON LAB
|
| Ionic relaxations involving magnesium sulfate, boric acid and magnesium, carbonate are known to account for sound absorption in sea water. Regional dependence of sound absorption has been shown to be caused mainly by the pH-dependence of the boric acid relaxation. In the nominal sea water pH range 7.7-8.3, the magnitude can be expected to vary over neatly a factor of four at lower frequencies. Since pH varies with depth as ... |
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| Global Model for Sound Absorption in Sea Water |
14 MAY 87 |
58 pages |
| Authors:
R. H. Mellen; P. M. Scheifele; D. G. Browning; NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT NEW LONDON LAB
|
| The attenuation term in the sonar equation for propagation loss can be taken to include all losses that are proportional to range. Absorption in the medium is usually the dominant mechanism; however, interface scattering, volume scattering and diffraction can also become important components under certain conditions. Sound absorption in sea water is an order of magnitude greater than in fresh water at sonar frequencies. Resonator experiments in the 1950's identified ... |
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| Fuels Combustion Resaearch |
31 OCT 86 |
|
| Authors:
F. L. Dryer; I. Glassman; F. A. Williams; PRINCETON UNIV NJ DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
|
| After great progress related to soot formation in normal diffusion flames, studies of near sooting inverse diffusion flames were begun to determine controlling precursors. Stable, temperature controlled inverse diffusion flames have been successfully developed and numerous chemical samples extracted and analyzed. Observed trends are being studied. The side chain oxidation of n-butyl benzene was found to follow the same processes as the smaller n-alkyl benzenes; abstraction, alkyl group displacement and ... |
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| The Corrosion Behavior of a Graphite Fiber/Magnesium Metal Matrix Composite in Aqueous Chloride Solution |
19 SEP 85 |
|
| Authors:
P. P. Trzaskoma; NAVAL RESEARCH LAB WASHINGTON DC
|
| The corrosion behavior of a graphite fiber/magnesium composite has been studied in dilute chloride solutions by immersion, SEM, and electrochemical techniques. The composite consists of graphite fibers coated with magnesium alloy AZ91C pressed between thin foils of alloy AZ31B. Within five days immersion in 0.0001 N NaCl, severe localized corrosion develops at the edges of the material where there are exposed graphite fibers. The reaction is accompanied by visible hydrogen ... |
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| Chemical Sound Absorption in Sea Water: Low-Frequency Relaxation Mechanism |
APR 1983 |
|
| Authors:
Robert H. Mellen; MAR INC EAST LYME CT
|
| Resonator measurements measurements indicate that the principal B(OH) -3 absorption mechanism in sea water is an exchange between the B(OH)3/B(OH)-4 and HCO-3/CO3-2 equilibria in which coupling to the Ca2+ ion-pairing equilibria provides most of the molal volume change. If either Ca or CO2 are omitted, B(OH) 3 absorption is an order of magnitude too low. T-jump measurements indicate a two-step B(OH)3 ionization process in H2O. In sea water, both relaxations ... |
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| Investigation of Large Diameter Polycrystalline Crucible Shaped InP |
JUL 1982 |
|
| Authors:
George A. Antypas; CRYSTACOMM INC MOUNTAIN VIEW CA
|
| Two processes are described for the synthesis of polycrystalline crucible shaped InP, vertical Bridgman and Phosphorus injection to boric oxide encapsulated Indium. While both processes appear attractive the latter is more promising since it could potentially result in situ growth of InP. (Author) |
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| The Ionization of Acids in Estuarine Waters |
15 DEC 1980 |
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| Authors:
Frank J. Millero; ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCE MIAMI FL
|
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| A Review of some Physical and Chemical Factors Affecting the Attenuation of Low Frequency Sound in Seawater, |
JUL 1980 |
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| Authors:
Daniel J. Whelan; MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)
|
| An attempt has been made to trace the contributions of various physical and chemical factors which effect the low frequency attenuation of sound observed in deep ocean channels and to establish that chemical relaxational processes do in fact contribute to the overall attenuation of this sound. The available evidence indicates that below 0.5 kHz, attenuation is affected predominantly by diffraction and diffusive scattering, but in the range 0.5 to 2.5 ... |
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| A Commercial Application of Fire Retardants to Dry-Formed Hardboards. |
1977 |
|
| Authors:
Gary C. Myers; Carlton A. Holmes; FOREST PRODUCTS LAB MADISON WIS
|
| Based on laboratory performance with a number of fire-retardant chemicals, disodium octaborate tetrahydrate-boric acid and dicyandiamide-phosphoric acid-formaldehyde were selected for treating fiber and making 4-foot by 8-foot dry-formed hardboards on a commercial production line. The boards were evaluated for performance under exposure to fire, strength, dimensional stability, and durability. Both treatment systems produced boards that met the acceptance flamespread criteria for Class B material in a 25-foot tunnel furnace. The ... |
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| Development of a Pyrotechnic Metal Oxide Generator (PMOG). |
MAR 1973 |
|
| Authors:
R. Alan Johnson; Robert Naismith; Phillip H. Graham; ATLANTIC RESEARCH ALEXANDRIA VA
|
| The purpose of the Pyrotechnic Metal Oxide Generator (PMOG) is to investigate the feasibility of using solid propellants for the generation of electrophilic gases. The report presents results of work necessary to evaluate existing test facilities, develop and test electrophilic generating propellants, and deliver six units for ground test verification of the concept. A survey of various test facilities capable of testing the effectiveness of electrophilic gas generators was conducted ... |
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| Temperature Dependence of Thermal Diffusion Length for Plutonium-Beryllium Neutrons in Borated Water. |
DEC 1970 |
|
| Authors:
John Archibald Frew; NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
|
| The temperature dependence of diffusion length for PU-BE neutrons in distilled water poisoned with boric acid was studied using concentrations of 1.0, 8.0, 16.0, and 30.0 grams per liter. Runs at each concentration were made at temperatures of 95, 131, and 167F. The trend of temperature dependence was clearly established. A theoretical temperature dependence of kappa squared, where kappa=1/L is proposed using a Maxwellian distribution. (Author) |
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| Preparation and Investigation of Additives Containing Phosphorus, Nitrogen, and Boron, |
25 NOV 1970 |
|
| Authors:
A. M. Kuliev; K. I. Sadykhov; R. K. Mamedova; F. G. Suleimanova; N. M. Magerramoza; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
|
| Ash-free organic compounds containing phosphorus, nitrogen, and boron were prepared and the possibility of their use as antioxidation additives for lubricating oils was demonstrated. (Author) |
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| THE EFFECT OF CONTAMINANTS ON THE MAGNESIUM-SODIUM NITRATE SYSTEM, |
01 JUN 1970 |
17 pages |
| Authors:
William T. Biggs; NAVAL AMMUNITION DEPOT CRANE IND
|
| Sodium nitrate was 'doped' with 75 contaminants. The 'doped' sodium nitrate was then used to prepare miniature magnesium-sodium nitrate candles. Data was obtained on burning time, relative candlepower output and spectral distribution of the energy radiated over the region from 200 to 780 milli microns. Evaluation of the data indicates that some dopants have advantageous effects upon the magnesium-sodium nitrate system. (Author) |
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| EXPLORATORY INVESTIGATION OF FIRE-RETARDANT TREATMENTS FOR PARTICLEBOARD. |
AUG 1969 |
|
| Authors:
Arthur D. Syska; FOREST PRODUCTS LAB MADISON WIS
|
| Douglas-fir and aspen flake-type particleboards made with combinations of common fire-retardant chemicals applied in several ways are evaluated for flammability and mechanical strength and dimensional stability. (Author) |
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| GLUING FIRE-RETARDANT-TREATED DOUGLAS-FIR AND WESTERN HEMLOCK. |
NOV 1968 |
|
| Authors:
R. E. Schaeffer; FOREST PRODUCTS LAB MADISON WIS
|
| An evaluation is given of the effects of fire-retardants on the rate of gelation of a resorcinol-resin adhesive and on the quality of resorcinol-resin joints of treated and untreated Douglas-fir and western hemlock. (Author) |
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| IGNITION OF RETARDANT TREATED CLOTH BY NUCLEAR WEAPON THERMAL PULSES, |
22 AUG 1968 |
|
| Authors:
Lyman L. Wiltshire; William J. Parker; NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF
|
| The ignition responses of fire retardant treated black cotton cloth and black rayon cloth to the simulated thermal pulses from nuclear weapons were investigated. The temporal and spectral characteristics of the main thermal pulse from air bursts ranging from 300 KT to 100 MT were reproduced using a cored carbon arc along with a specially shaped rotating disk shutter. The treatments applied to the cloths were a combination of borax, ... |
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| KNOWLEDGE OF THE SPECIFICITY OF DEHYDROGENASES |
01 JUL 1968 |
17 pages |
| Authors:
T. Thunberg; FORT DETRICK FREDERICK MD
|
| The report states that slower Mb decoloration upon addition of pyrotartaric acid to the system Mb - succinic dehydrogenase, compared to Mb decoloration upon addition of succinic acid to the same system, is due to a difference in hydrogen activation rather than to dissimilarities in fixation of substrate. |
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| THE POLAROGRAPHIC DETERMINATION OF THE CONCENTRATION OF WEAK ACIDS |
JUL 1968 |
6 pages |
| Authors:
I. A. Korshunov; Z. B. Kuznetzova; M. K. Shchennikova; ARMY BIOLOGICAL LABS FREDERICK MD
|
| It was found that weak acids produce diffusion currents of hydrogen with potentials of about -1.6, -1.8 V only in a background solution of indifferent electrolytes. Between the diffusion current constant of hydrogen and the dissociation constant of weak acid there is a relationship of the form Kd = a + b log Kc, which may be used to calculate the dissociation constant of the acid. It was established that ... |
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| SPECTROSCOPIC STUDIES OF THE VAPORIZATION OF HIGH TEMPERATURE MATERIALS. |
APR 1968 |
|
| Authors:
Milton J. Linevsky; GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV
|
| The techniques of matrix isolation were used to obtain the infrared spectra of several high temperature molecules. An injector Knudsen cell was added to the general methods of matrix isolation resulting in further versatility of the method. Spectra of species produced by the reaction of a condensed phase and gas phase can now be studied. The following molecules were studied: HBO2, BOCl, BOF, FeF2, CrF2, CrF3, CrCl2 and LiOH. In ... |
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| EFFECT OF INORGANIC SALTS ON PYROLYSIS OF WOOD, CELLULOSE, AND LIGNIN DETERMINED BY DIFFERENTIAL THERMAL ANALYSIS. |
JAN 1968 |
|
| Authors:
Walter K. Tang; Herbert W. Eickner; FOREST PRODUCTS LAB MADISON WIS
|
| Differential thermal analysis was conducted in both helium and oxygen atmospheres on the thermal decomposition of wood, cellulose, and lignin, untreated and treated with 2 and 8 percent by weight of eight inorganic salts and an acid. Thermograms were obtained for the temperature ranges for endothermic and exothermic reactions, for the temperatures of maximum heat absorption or release, and for the heat intensities. These data combined with results of a ... |
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| CHEMISTRY OF THE BORAX/GLYCOL CONDENSATE. |
DEC 1967 |
|
| Authors:
Gardiner H. Myers; ARMY COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD
|
| A review of some previous work on borate condensation reactions is given and experimental investigations are reported. The borax-glycol reaction is interpreted as involving a nearly complete degree of condensation, forming a mixture of acidic and basic borate products. The condensates of propylene glycol with boric acid and with sodium metaborate were prepared. Mixing these is an alternate preparation of the borax-glycol condensate. (Author) |
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| A HIGH-SENSITIVITY NEUTRON AND GAMMA-RADIATION RADIOMETER OF THE VRNG-2 TYPE (VYSOKOCHUVSTVITELNYI RADIOMETR NEITRONOV I GAMMA-IZLUCHENIYA TIPA VRNG-2), |
27 OCT 1967 |
|
| Authors:
L. S. Druskina; V. I. Krasnenkov; T. V. Timofeeva; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
|
| A universal radiometer for fast, intermediate, and slow n and gamma-radiation is described; it can measure fast-n fluxes in the range 0.03 - 3000 n/sq cm sec. and gamma-radiation in the range of 0.05 - 800 micro-r/sec with relatively high accuracy. The n detector is a ZnS(Ag) scintillator with H3BO3 added (85% 10B). It can be equipped with an organic glass moderator (in the case of fast n) and Cd ... |
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| DEVELOPMENT OF A SHIELD FOR PARTIAL BODY IRRADIATION BY PULSED FISSION SPECTRUM RADIATIONS. |
JAN 1967 |
|
| Authors:
William J. Walker Jr.; Jelle de Boer; AIR FORCE WEAPONS LAB KIRTLAND AFB NM
|
| An economical and easily constructed shield to be used in partial body exposures of sheep to pulsed fission spectrum radiation caused a final dose reduction of 76 percent when evaluated on the basis of neutron and gamma dosimetry. (Author) |
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| Thermochemistry of Selected Compounds. |
12 DEC 1966 |
11 pages |
| Authors:
Ludwig G. Fasolino; NATIONAL RESEARCH CORP CAMBRIDGE MASS NORTON EXPLORATORY RESEARCH DIV
|
| The objective of this program to determine the heats of formation of selected chemical compounds related to rocket propulsion by applying the methods of calorimetry. The calorimetric techniques included combustion, solution, and reaction calorimetry. The accomplishments of the program are presented in chronological order and rather than repeat the details of all phases of the work, references are made to the appropriate quarterly, semi-annual, or annual report. Thermochemical studies were ... |
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| KINETICS OF HYDROGEN-OXYGEN AND HYDROCARBON-OXYGEN REACTIONS. |
OCT 1966 |
|
| Authors:
R. R. Baldwin; R. W. Walker; HULL UNIV (ENGLAND) DEPT OF CHEMISTRY
|
| The report summarizes progress made on four main topics: (a) the use of computer programmes to interpret the hydrogen-oxygen and carbon monoxide-hydrogen-oxygen reactions; (b) the oxidation of methane in slowly reacting hydrogen-oxygen mixtures; (c) the addition of neopentane to slowly reacting hydrogen-oxygen mixtures; (d) the oxidation of propionaldehyde in aged boric-acid-coated vessels. The interpretation of the results obtained and the evaluation of velocity constants from the results are discussed. (Author) ... |
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| METHOD OF PREPARATION OF BETA2-MACROGLOBULIN OF HUMAN SERUM |
20 SEP 1966 |
7 pages |
| Authors:
R. Masseeff; J. Gombert; J. Josselin; ARMY BIOLOGICAL LABS FREDERICK MD
|
| A method of preparation of beta2-macroglobulin IgM of human serum involving three stages is described: (1) Elimination of lipoproteins using dextran sulphate; (2) precipitation of euglobulins using a solution of boric acid; (3) filtration of dextran gel. |
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| DETERMINATION OF BORON IN BORON-PYROLYTIC GRAPHITE, |
JAN 1966 |
|
| Authors:
F. M. Wachi; D. E. Gilmartin; K. G. Jefferson; AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS
|
| An analytical technique for determining boron in boron-pyrolytic graphite in the concentration range from 0.03 to 3.5 percent by weight is described. Its chief attributes are simplicity of operation, high accuracy, and excellent precision. (Author) |
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| INVESTIGATION OF ELECTROPOLISHING SOLUTION. |
31 DEC 1965 |
|
| Authors:
William C. Jones; CHEMICAL CORP SPRINGFIELD MASS
|
| The report covers an investigation of the electropolishing properties of commercial fluoboric acid alone and in combination with various additives including glycerine, citric acid, gluconic acid, oxalic acid, boric acid, sodium ferrocyanide, chromic acid, and acetic acid. Evaluation was made primarily by voltage current relationships and also by the use of a specialized ten-section cell. Results indicated rapid metal removal but the range of voltage through which electropolishing was achieved ... |
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| VARIABILITY OF CLOSED-BOX DIFFUSION OF BORON INTO SILICON, |
20 MAY 1965 |
|
| Authors:
E. P. Dudley; r. j. anstead; C. H. Klute; HARRY DIAMOND LABS WASHINGTON D C
|
| A study of the variability of the closed-box diffusion of boron into silicon has been made, using boric acid and silicic acid mixtures as boron sources. Two dilute sources (0.1 wt-pct boric acid and 10 wt-pct boric acid) have been examined in detail to determine how well junction depths, sheet resistivities, and surface concentrations could be reproduced. The experiments were designed to emphasize the contribution of the mass transfer and ... |
|
| OXIDATIVE DEGRADATION OF POLYHEDRAL BORANES, |
11 JAN 1965 |
|
| Authors:
Alexander Kaczmarczyk; Gerald B. Kolski; Wesley P. Townsend; DARTMOUTH COLL HANOVER N H DEPT OF CHEMISTRY
|
| It is discovered that oxidation of B10H10(-2) and B20H18(-2) by potassium permanganate: (1) proceeds readily to completion at room temperature at pH 7 and (2) results in the quantitative conversion to boric acid. A summary of results is presented for the yield of boric acid from the oxidation of B10H10(-2), B12H12(-2), B20H18(-2), B20H18(-4), and B20H17OH(-4) ions and their organic and halo derivatives by dilute permanganate. One set of data was ... |
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| THERMOCHEMISTRY OF SELECTED COMPOUNDS. |
09 DEC 1964 |
|
| Authors:
Ludwig G. Fasolino; NATIONAL RESEARCH CORP CAMBRIDGE MASS
|
| The work includes measurements of the heats of solution of B2O3 (amorphous), B2O3 (crystalline), H3BO3 and BC13 (liquid). From these measurements the heats of formation were calculated for B2O3 (both forms) and BC13 (liquid). Attempts were made to determine a satisfactory reaction involving aluminum borohydride, the thermochemical results of which would allow a calculation of its heat of formation. A promising solution to this problem appears to be in the ... |
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| TRACE SPECIES IN COMBUSTION GASES. THE FORMATION OF SODIUM METABORATE. |
NOV 1964 |
|
| Authors:
David Fleischer; THIOKOL CHEMICAL CORP DENVILLE N J REACTION MOTORS DIV
|
| The equilibrium constant for the reaction NaCl(g) + HBO2(g) = NaBO2(g) + HCl(g) is determined to be, Kp = 2.50 (1980K). Sodium vapor and boron trichloride (BCl3) are reacted in a hydrocarbon-air flame contained in a tunnel burner. Conditions are such that the concentrations of HBO2 and HCl are equal to the total flows of boron and chlorine. The concentration of unreacted sodium is found by line absorption, using an ... |
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| HEATS OF FORMATION OF B2O3 (CRYSTALLINE) AND B2O3 (AMORPHOUS). |
02 JUN 1964 |
|
| Authors:
Ludwig G. Fasolino; NATIONAL RESEARCH CORP CAMBRIDGE MASS
|
| From measurements of the heats of solution of B2O3 (crystalline), B2O3 (amorphous), and H3BO3, the heats of formation of B2O3 (crystalline) and B2O3 (amorphous) were calculated. From this work, the crystalline-amorphous heat of transformation was also calculated. (Author) |
|
| COMPARISON OF WOOD PRESERVATIVES IN MISSISSIPPI POST STUDY. |
FEB 1964 |
|
| Authors:
J. Oscar Blew Jr.; John W. Kulp; FOREST PRODUCTS LAB MADISON WIS
|
| Experimental untreated southern yellow pine posts installed from 1936 to 1938 at the Harrison Experimental Forest, Saucier, Miss., had an average life of 3.3 years. Untreated longleaf pine posts installed in 1949 had an average life of 2.3 years, while those treated with a No. 2 fuel oil and with Wyoming residual petroleum oil have an estimated average life of 5 and 8 years, respectively. Of southern yellow pine posts ... |
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| WORKING GROUP ON THERMOCHEMISTRY PROCEEDINGS OF THE 1ST MEETING, NOVEMBER 5-7, 1963, HELD AT UNION CARBIDE BUILDING, NEW YORK, N. Y., VOLUME I. |
FEB 1964 |
247 pages |
| Authors:
CHEMICAL PROPULSION INFORMATION AGENCY LAUREL MD
|
|
| THERMODYNAMIC PROPERTIES OF BIMETALLIC COMPOUNDS |
31 DEC 1963 |
13 pages |
| Authors:
Ludwig Fasolino; NATIONAL RESEARCH CORP CAMBRIDGE MA
|
| The heats of formation of the aluminum hydrides designated Olane-58 (-4.6 = 1.6 kcal/mole) and Dowane-1451 (-2.5 = 3.7 kcal/mole) were determined by measuring the heats of solution of these compounds and aluminum in 6N HCl at 75 C and correcting the data to 25 C. The heat of formation (-79.39 =3.45 kcal/ mole) of the Reaction Motors material, Li3AlH6, was determined by measuring the heats of solution of lithium, ... |
|
| RESEARCH ON INORGANIC POLYMER SYSTEMS. |
DEC 1963 |
|
| Authors:
A. L. McCloskey; R. J. Brotherton; W. C. Teach; J. L. Boone; Lowell L. Petterson; UNITED STATES BORAX RESEARCH CORP ANAHEIM CALIF
|
| This report includes the results of investigations on the chemistry of thermally stable inorganic and semi-inorganic polymers. Two polymers, polydioxaborole and a polybenzodiazaboroline, have good thermal stability, however, high molecular weights are difficult to attain and they are water sensitive. In addition both systems lead to embrittlement of glass at high temperatures and adhere poorly to metal surfaces at high temperatures. New approaches to boronnitrogen polymers were investigated. (Author) |
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| STUDIES IN ION SOLVATION IN MIXED SOLVENTS. |
30 NOV 1963 |
|
| Authors:
D. Feakins; BIRKBECK COLL LONDON (ENGLAND)
|
| Using the appropriate chemical cells, the free energies to transfer of the pairs of ions H(+)Br (-) and H(+)I(-) in the standard state have been determined for transfers from water to 20% mixtures of dioxan and water at 25 degrees. A byproduct of the measurements is the dissociation constant of boric acid in the mixed solvent. Considerable experimental difficulties have been encountered and overcome in these measurements. (Author) |
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| STUDY OF THE PROPERTIES AND OF THE FEASIBILITY OF USING ORGANOBOROSILICON POLYMERS AS CONSTITUENTS OF HEAT-RESISTANT ADHESIVES, |
06 AUG 1963 |
|
| Authors:
V. D. Solodovnik; a. b. davydov; Z. G. Ivanova; Ya. I. Mindlin; N. S. Leznov; AEROSPACE INFORMATION DIV LIBRARY OF CONGRESS WASHINGTON D C
|
| Several methods of preparing organoborosilicon polymers were investigated. Adhesives 201 and 202 have been developed on the basis of organoborosilicon polymers prepared from phenyltriethoxysilane and its mixtures with methylphenyldiethoxysilane and boric acid (sic); they are superior to currently used adhesives BC-10T and RC-350 in heat resistance and thermal stability. (Author) |
|
| HYDROTHERMAL SYNTHESIS OF VEATCHITE AND ITS CALCIUM ISOMORPH, |
01 JUN 1963 |
14 pages |
| Authors:
C. R. Parkerson; NAVAL ORDNANCE LAB CORONA CALIF
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| The hydrated strontium borate, veatchite (SrO. 3B2O3.2H2O), and its calcium isomorph (CaO.3B 2O3.2H2O) have been prepared by hydrothermal synthesis at 260 C. Veatchite was prepared by the reaction of Sr(OH)2 and H3BO3 solution and also by the conversion of tunellite (SrO.3B2O3. 4H2O) in H3BO3 solution of 260 C. The calcium isomorph was prepared in a similar manner by the reaction of Ca(OH)2 and H3BO3 solution and also by the conversion ... |
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| HYDROTHERMAL SYNTHESIS OF HYDRATED CALCIUM BORATES, |
31 APR 1963 |
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| Authors:
C.R. Parkerson; NAVAL ORDNANCE LAB CORONA CA
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| A limited investigation was made of the synthesis of calcium borate hydrates. The following hydro thermal reactions were performed: (1) Ca(OH)2 H3BO3 H2O from 200 to 350 C produced priceite (4CaO.5B2O3.7H2O), compound I (CaO.3B2O3.2H2O), compound II (3CaO.7B2O3.3H2O), compound III (4CaO.7B2O3), and compound IV (unknown). (2) Meyerhofferite (2CaO.3 B2O3.7H2O) in H3BO3 solution from 85 to 250 C produced nobleite (CaO.3B2O3.4H2O), gowerite (CaO.3B2O3.5H2O), ginorite (2CaO.7B2O3.8H2O), compound IV (un known), synthetic (2CaO.3B2O3.H2O) and ... |
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BORIC ACID
