| Project/Area Number |
62045021
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| Research Category |
Grant-in-Aid for Overseas Scientific Survey.
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| Allocation Type | Single-year Grants |
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| Section | University-to-University Cooperative Research |
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| Research Institution | Welding Research Institute, Osaka University |
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Principal Investigator |
MATSUNAWA Akira Professor, Welding Research Institute, Osaka University, 溶接工学研究所, 教授 (20029119)
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| Co-Investigator(Kenkyū-buntansha) |
R.M Latanisi マサチューセッツ工科大学, 材料理工学科材料加工センター・教授, 所長
T.W. Eagar マサチューセッツ工科大学, 材料理工学科, 教授
KATAYAMA Seiji Research Instructor, Welding Research Institute, Osaka University, 溶接工学研究所, 助手 (10144528)
ABE Nobuyuki Associate Professor, Welding Research Institute, Osaka University, 溶接工学研究所, 助教授 (90127176)
INOUE Katsunori Professor, Welding Research Institute, Osaka University, 溶接工学研究所, 教授 (90029067)
LATANISION Ronaldo M. Professor and Director, Dept. of Material Science and Engineering, Materials Pro
EAGAR Thomas W. Professor, Dept. of Material Science and Engineering, Massachusetts Institute of
S ALLENN マサチューセッツ工科大学, Dept.of Materials Science&E
G YUREK マサチューセッツ工科大学, Dept.of Materials Science&E
J S HAGGARTY マサチューセッツ工科大学, Materials Processing Center
T W EAGAR マサチューセッツ工科大学, Dept.of Materials Science&E
大村 悦二 大阪大学, 溶接工学研究所, 助手 (90144435)
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| Project Period (FY) |
1987 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥8,100,000 (Direct Cost: ¥8,100,000)
Fiscal Year 1989: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1988: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1987: ¥3,200,000 (Direct Cost: ¥3,200,000)
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| Keywords | Laser Materials Processing / Surface Modification / Rapid Cooling / Rapid Solidification / Laser CVD / Laser PVD / レーザーPVD |
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| Research Abstract |
Studies were conducted on various kinds of laser surface modification such as laser surface amorphization of alloys, ceramics coating on Titanium alloy surface by powder predeposition process, and thin film coating of ceramics by laser CVD and PVD processes. In laser amorphization, the optimum laser irradiation conditions were established as well the thermal history of base metal could be predicted by heat conduction models for differen types of laser oscillation, i.e., CW, pulsed and Q-switch modes. Parametric studies on laser CVD process for coating thin film of Boron Carbide and its material scientific evaluation were conducted. The results showed that the deposition rate of ceramic film on a substrate was 100 times or more higher than that of ordinary thermal CVD process. In the studies of laser PVD process, the evaporation phenomena of target material as well as the plume species were clarified by optical measurements including spectroscopic observation. The hardness and other film characteristics were measured in the wide range of vacuum degree and substrate temperatures.
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