| FABRICATION OF SIC WHISKER PREFORM WITH GAMMA-AL2O3 FINE POWDER BINDER AND ITS 6061 ALUMINUM ALLOY MATRIX COMPOSITES. |
01 JAN 1995 |
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| Authors:
Katsuaki Suganuma; Masahiro Inoue; Kenji Nagatomo
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 | Japan Institute of Light Metals : Sendai, Japan |
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| FABRICATION OF AL2O3 FIBER PREFORM WITH GAMMA-AL2O3 POWDER BINDER FOR 6061 ALLOY MATRIX COMPOSITES. |
01 JAN 1994 |
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| Authors:
Katsuaki Suganuma; Kenji Nagatomo
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| Elsevier Sequoia : The Netherlands |
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| Fabrication of Aluminum Borate Whisker Preform Without Binder and Characteristics of 6061 Aluminum Alloy Matrix Composite. |
1994 |
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| Authors:
Kenji Nagatomo; Katsuaki Suganuma; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN)
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| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, data, dr mmc, japanese papers, mmc, mmc data, reinforcement data materials and material types:, (albo)w/6061, (albo)w/al, 6061 matrix, al matrix, albo whiskers, albo/6061, albo/al, aluminum borate whiskers (see also albo whiskers), binders, preform binders, whiskers material characteristics and data fields:, cte data, fiber data, tensile strength data parameter values relevant to ... |
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| Microstructure of B4C/TiB2 Composite Fabricated by Reaction Sintering of B4C and TiC. |
1994 |
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| Authors:
Gen Sasaki; Tadatomo Suga; Tomohiro Yanai; Katsuaki Suganuma; Koichi Niihara; TOKYO UNIV (JAPAN)
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| TiB2-dispersed B4C ceramics were fabricated by reaction sintering of B4C and TiC powders. The microstructure of this composite was observed mainly by transmission electron microscopy. TiB2 particles dispersed uniformly in the boundaries of B4C matrix. The interfaces of B4C-B4C, TiB2-TiB2 and B4C-TiB2 connect directly without intergranular phase, defect and impurity, and have no preferred orientation. However, "ribbon-like structure" carbon layer sometimes precipitates at B4C-B4C, TiB2-TiB2 and B4C-TiB2 interfaces, which form ... |
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| Interfacial Microstructures of Potassium Titanate Whiskers in Pure Aluminum and 6061 Alloy Matrix. |
1994 |
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| Authors:
Katsuaki Suganuma; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN)
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| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, japanese papers, mmc materials and material types:, (tio)w/6061, (tio)w/al, 6061 matrix, al matrix, potassium titanate whiskers, tio whiskers, whiskers parameter values relevant to the data:, 600 c - 700 c, 700 c - 800 c, testing and test conditions:, tem manufacturing:, fabrication techniques, p/m, squeeze castings miscellaneous and special technical terms:, ... |
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| Interfaces in Fiber/Whisker-Reinforced Alloys. |
1994 |
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| Authors:
Katsuaki Suganuma; NATIONAL DEFENSE ACADEMY KANAGAWA (JAPAN)
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| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, cr mmc, dr mmc, mmc, review materials and material types:, (al18b4o33)w/6061, (al18b4o33)w/al, (al2o3)f/al, (c)f/al, (c)f/mg, (k2ti6o13)w/6061, (k2ti6o13)w/al, (si3n4)w/6061, (si3n4)w/al, (si3n4)w/aln, (sic)w/6061, (sic)w/al, 6061 matrix, al matrix, al18b4o33 whiskers, al18b4o33/6061, al18b4o33/al, al2o3 fibers, al2o3/al, aln matrix, c fibers, c whiskers, c/al, c/mg, fibers, gr whiskers, k2ti6o13 whiskers, k2ti6o13/6061, k2ti6o13/al, mg matrix, si3n4 ... |
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| Reliability Factors in Ceramic/Metal Joining. |
1993 |
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| Authors:
Katsuaki Suganuma; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN)
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| This paper reviews the processing factors in joining ceramics to metal concerning the reliability. Thermal expansion mismatch has a great influence not only on the absolute value of strength but also on the reliability of joints. Large thermal stress increases the scatter of joint strength because of the presence of defects induced during joining process. One should insert an appropriate interlayer to relax the stress between a ceramic and a ... |
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| Direct Bonding Method of Aluminum to Stainless Steel by Pressure Casting of Aluminum. |
1993 |
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| Authors:
Katsuaki Suganuma; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN)
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| A new process for joining al to stainless steel has been established by using pressure casting of al in air. blocks of alsi type 304 austenine stainless steel to be joined were placed in a mold and were preheated at 450 degrees c - 600 degrees c in air. molten al was poured into the mold and a pressure of 50 mpa was applied immediaytely. stainless steel was tightly bonded ... |
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| Reliability Factors in Ceramic/Metal Joining. |
1993 |
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| Authors:
Katsuaki Suganuma; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN)
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| This paper reviews the processing factor in joining ceramics to metals concerning the reliability. thermal expansion mismatch has a great influence not only on the absolute value of strength but also on the reliability of joints. large thermal stress increases the scatter of joint strength because of the presence of defects induced during joining process. one should insert an appropriate interlayer to relax the stress between a ceramic and a ... |
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| STRENGTH AND MICROSTRUCTURE OF SILICON NITRIDE/ALUMINUM INTERFACE FABRICATED BY SQUEEZE CAST BRAZING |
1993 |
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| Authors:
Katsuaki Suganuma
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| The oxidized silicon nitride was brazed with pure aluminum by the squeeze cast method. The bending strength of the joint was above 400 MPa. The interfacial microstructure has been identified by high-resolution TEM and analytical TEM methods. Two distinct reaction layers were formed at the interface and the thickness of both layers were almost the same, about 30 -40 nm. The one adjacent to silicon nitride had a nanocrystalline structure ... |
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| HIGH TEMPERATURE STRENGTH AND WHISKER/MATRIX INTERFACE OF BETA SILICON NITRIDE WHISKER REINFORCED 6061 ALUMINUM ALLOY. |
01 JAN 1992 |
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| Authors:
Katsuaki Suganuma; Genn Sasaki; Teruaki Fujita
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| Minerals, Metals and Materials Society : Warrendale, Pennsylvania Pennsylvania |
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| MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SI(3)N(4) MATRIX COMPOSITE WITH NANO-METER SCALE SIC PARTICLES |
1992 |
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| Authors:
Gen Sasaki; HIROFUMI NAKASE; Katsuaki Suganuma
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| SI(3) N(4) MATRIX COMPOSITES WITH DISPERSED SIC PARTICLES WERE PREPARED BY HOT-PRESSING COMPACTS OF POWDER MIXTURES OF SUB-MICRON SIZE SIC AND SI(3)N(4) PARTICLES. SIC PARTICLES IN NANO-METER SCALE WERE DISPERSED UNIFORMLY INSIDE SI(3)N(4) GRAINS. AFTER ADDING SIC PARTICLES, THE CONFIGURATION OF BETA-SI(3)N(4) GRAINS CHANGED FROM EQUIAXED/PLATELET-LIKE TO ROD-LIKE STRUCTURE. AT 20 VOL% SIC, GRAINS WERE FINE AND EQUIAXED. WITH INCREASING SIC CONTENT, THE ALPHA- TO BETA-PHASE TRANSFORMATION WAS SUPPRESSED, AND ... |
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| MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SI(3)N(4) MATRIX COMPOSITE WITH NANO-METER SCALE SIC PARTICLES |
1992 |
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| Authors:
Gen Sasaki; HIROFUMI NAKASE; Katsuaki Suganuma
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| SI(3)N(4) MATRIX COMPOSITES WITH DISPERSED SIC PARTICLES WERE PREPARED BY HOT-PRESSING COMPACTS OF POWDER MIXTURES OF SUB-MICRON SIZE SIC AND SI(3)N(4) PARTICLES. SIC PARTICLES IN NANO-METER SCALE WERE DISPERSED UNIFORMLY INSIDE SI(3)N(4) GRAINS. AFTER ADDING SIC PARTICLES, THE CONFIGURATION OF BETA-SI(3)N(4) GRAINS CHANGED FROM EQUIAXED/PLATELET-LIKE TO ROD-LIKE STRUCTURE. AT 20 VOL% SIC, GRAINS WERE FINE AND EQUIAXED. WITH INCREASING SIC CONTENT, THE ALPHA- TO BETA- PHASE TRANSFORMATION WAS SUPPRESSED, AND ... |
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| High Temperature Strength of 6061 Aluminum Alloy Reinforced With Beta-Phase Silicon Nitride Whisker and Whisker/Matrix Interface Microstructure. |
1991 |
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| Authors:
Katsuaki Suganuma; Genn Sasaki; Teruaki Fujita; Masahiro Tokuse; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN) DEPT OF MATERIALS SCIENCE AND ENGI NEERING
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| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, mmc materials and material types:, (sin)w/6061, (sin)w/al, 6061 matrix, al matrix, sin whiskers, sin/6061, sin/al testing and test conditions:, sem, tem, xrd miscellaneous and special technical terms:, japanese papers. |
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| EVALUATION OF STRENGTH AND HEAT-RESISTANCE FOR ALUMINUM-BORATE WHISKER REINFORCED AC8A ALUMINUM ALLOY COMPOSITE |
1991 |
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| Authors:
Katsuaki Suganuma; Teruaki Fujita; Genn Sasaki
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| AN AC8A ALUMINUM ALLOY MATRIX COMPOSITE REINFORCED WITH 20 VOL% ALUMINUM-BORATE WHISKER WAS FABRICATED BY SQUEEZE CASTING AND ITS MECHANICAL PROPERTIES WERE EVALUATED. TENSILE STRENGTH OF THE COMPOSITE WAS ABOUT 430 MPA AND 250 MPA AT ROOM TEMPERATURE AND 573 K, RESPECTIVELY. THE YOUNG'S MODULUS AT ROOM TEMPERATURE WAS AS HIGH AS 107 GPA, WHILE THE AVERAGE THERMAL EXPANSION COEFFICIENT BETWEEN ROOM TEMEPERATURE AND 573 K WAS A LOW AS ... |
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| Fabrication of Aluminum Matrix Composite Reinforced With Potassium Titanate Whiskers by Squeeze Casting and Microstructure of Whiskers/Matrix Interface. |
1990 |
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| Authors:
Katsuaki Suganuma; Teruaki Fujita; Koichi Niihara; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN)
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| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, mmc materials and material types:, (c)f/co, (c)f/co-cr, 6061 alloys, al matrix, c/co-cr, co matrix, co-cr eutectics, co-cr matrix, fibers, whiskers material characteristics and data fields:, anisotropic toughness, cte, fracture work, load deflection curves, load-deflection curves (see also load deflection curves), notch impact strengths, tensile strength, young's modulus testing and test conditions:, ... |
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| Interfacial Microstructure and Mechanical Property of Short Fiber Reinforced Aluminum Alloys. |
1989 |
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| Authors:
Katsuaki Suganuma; Kouichi Niihara; Teruaki Fujita; Nobuyuki Suzuki; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN)
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| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, cr mmc, data, mmc, mmc data materials and material types:, (al2o3)f/6061, (al2o3)f/al, 6061 alloys, 6061 matrix, al matrix, al2o3 short fibers, al2o3/6061, al2o3/al, fibers, potassium titanate whiskers, potassium titanate/al, short fibers material characteristics and data fields:, aspect ratios, cte, cte data, mechanical properties, modulus data, tensile strength, tensile strength data, young's ... |
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| REINFORCEMENT OF 6061 ALLOY WITH POTASSIUM TITANTE WHISKER |
1989 |
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| Authors:
Katsuaki Suganuma; Teruaki Fujita; Koichi Niihara
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| FEASIBILITY OF POTASSIUM TITANATE WHISKER AS THE REINFORCEMENT OF 6061 ALUMINUM ALLOY WAS EXAMINED. THE VOLUME FRACTION OF WHISKER WAS 20% AND THE SQUEEZE CASTING METHOD WAS ADOPTED. TENSILE TEST MEASUREMENTS OF YOUNG'S MODULUS AND THERMAL EXPANSION COEFFICIENT WERE PERFORMED. REACTION AT THE WHISKER/MATRIX INTERFACE WAS OBSERVED BY ANALYTICAL AND HIGH RESOLUTION TRANSMISSION ELECTRON MICROSCOPY. THE STRENGTH OF THE EXTRUDED COMPOSITE REACHED 410 MPA, WHICH IS QUITE GOOD. TEM OBSERVATION ... |
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