2016 Fiscal Year Final Research Report
Science of Hetero-Interface of Advanced Power Devises in Extreme Environments
| Project/Area Number |
24226017
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| Research Category |
Grant-in-Aid for Scientific Research (S)
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| Allocation Type | Single-year Grants |
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| Research Field |
Material processing/treatments
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
長尾 至成 大阪大学, 産業科学研究所, 准教授 (10315054)
菅原 徹 大阪大学, 産業科学研究所, 助教 (20622038)
酒 金テイ 大阪大学, 産業科学研究所, 助教 (00467622)
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| Research Collaborator |
Lin Shih-kang National Cheng Kung University, Assoc. Prof.
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| Project Period (FY) |
2012-05-31 – 2017-03-31
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| Keywords | 電気接続・配線 / パワー半導体 / 異相界面 / 焼結接合 / Nano-Volcanic Eruption |
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| Outline of Final Research Achievements |
New Ag sinter joining technology was developed and the basic mechanism, which enables one to fabricate an excellent joint between two substances with Ag micron particles paste or with sputtering Ag films at low temperature and low pressure in air, was clarified by high resolution TEM with the aid both of the first principle simulation and of the phase diagram simulation. Oxygen was absorbed in the grain boundary of Ag, which becomes liquid, leading Ag-O liquid eruption under compression stress, which reaction was named as "Nano-Volcanic Eruption". The heat-resistance beyond 250 degree C was achieved by Ag sinter joining. The environmental reaction was applied to Cu sinter joining and the possibility of low temperature sinter joining with affordable Cu paste was discovered.
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| Free Research Field |
工学
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