2005 Fiscal Year Final Research Report Summary
Shock compaction of powders for making crack-free bulk materials including the effect of shock-induced heat in micro-area
| Project/Area Number |
15360391
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Kumamoto University |
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Principal Investigator |
HOKAMOTO Kazuyuki Kumamoto University, Shock Wave and Condensed Matter Research Center, Associate Professor, 衝撃・極限環境研究センター, 助教授 (70199462)
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| Co-Investigator(Kenkyū-buntansha) |
FUJITA Masahiro Sojo Univ., Dept.of Mech.Eng., Professor, 工学部, 教授 (20040389)
ITOH Shigeru Kumamoto University, Shock Wave and Condensed Matter Research Center, Professor, 衝撃・極限環境研究センター, 教授 (80069567)
TOMOSHIGE Ryuichi Sojo University, Dept.of Applied Chem, Associate Professor, 工学部, 助教授 (90258640)
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| Project Period (FY) |
2003 – 2005
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| Keywords | Powder compaction / Shock compression / Bulk material / Explosive forming / Shock wave / Shock-induced reaction |
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| Research Abstract |
The present investigation tried to establish a method for shock compaction of powders to obtain crack-free bulk materials. Also, the effect of thermal energy induced in micro-area during shock compaction was discussed. At first, a new assembly for shock compaction was proposed which used the detonation of an explosive to convert it into underwater shock wave. The pressure distribution and the pressure profile was controlled based on the numerical analysis as well as the measurement using manganin gage. The method proposed enables to control the pressurizing condition only by changing the distance between the explosive and the sample using an explosive which has stable detonation velocity. Using the assembly newly designed, the possibility for making Al-SiCp and Mg-SiCp composites through shock compaction. Also, the possibility of synthesizing intermetallics from mixed element powders was suggested. The synthesized intermetallic showed nano-sized substructure based on the rapid change of the physical conditions which enables to show highly-functional properties. A new method of synthesizing thin coating layer by intermetallics was also suggested.
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Research Products
(12 results)
