| Project/Area Number |
07045053
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | University-to-University Cooperative Research |
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| Research Field |
補綴理工系歯学
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| Research Institution | Nagasaki University |
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Principal Investigator |
HISATSUNE Kunihiro (1996-1997) Nagasaki University, professor, 歯学部, 教授 (20037526)
安田 克廣 (1995) 長崎大学, 歯学部, 教授 (50013884)
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| Co-Investigator(Kenkyū-buntansha) |
VAN Tendeloo アントワープ大学, 理学部, 教授
VAN Landuyt アントワープ大学, 理学部, 教授
HASAKA Masayuki Nagasaki University, professor, 工学部, 教授 (30039698)
UDOH Koh-ichi Nagasaki University, Instructor, 歯学部, 助手 (60145266)
TANAKA Yasuhiro Nagasaki University, Instructor, 歯学部, 助手 (10217086)
VAN LANDUYT Joseph University of Antwerp, Professor
VAN TENDELOO Gustaaf University of Antwerp, Professor
GUSTAAF Van アントワープ大学, 理学部, 教授
JOSEPH Van L アントワープ大学, 理学部, 教授
SCHRYVERS Do アントワープ大学, 理学部, 教授
VAN DYCK Dir アントワープ大学, 理学部, 教授
VAN TENDELOO アントワープ大学, 理学部, 教授
VAN LANDUYT アントワープ大学, 理学部, 教授
岩永 浩 長崎大学, 教養部, 教授 (40039772)
福永 博俊 長崎大学, 工学部, 教授 (10136533)
藤山 寛 長崎大学, 工学部, 教授 (20112310)
DYCK Dirk Va アントワープ大学, 理学部, 教授
SCHRYVCRS Do アントワープ大学, 理学部, 教授
TCHDCLOO Gus アントワープ大学, 理学部, 教授
LANDUYT Josc アントワープ大学, 理学部, 教授
久恒 邦博 長崎大学, 歯学部, 助教授 (20037526)
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| Project Period (FY) |
1995 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥5,700,000 (Direct Cost: ¥5,700,000)
Fiscal Year 1997: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1996: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1995: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | High resolution electron microscopy / Functionally graded material / Interface / Biomaterial / Composite material / Ion engineering / Ceramics / Metal bond porcelain / 複合材料 / イオン工学 / 歯科用金合金 / 白金 / 規則格子変態 / 相分解 / 時効硬化 / 制限視野電子回折 / X線回折 |
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| Research Abstract |
The present study was planned to evaluate the bond characteristics in a metal-ceramic composite with better bio-compatibility. It is very important to understand nature of the interface. The investigation of the formation process and the fundamental structure within the interface between metal and ceramics is an important requirement for improving the bonding technique. Two signiticant conclusions were mainly obtained as follows ;
1. It was constructed how to produce better specimen for high resolution transmission electron microscopic observations on the interface of the composite materials. This technique is very effective to perform a direct observation. Especially, the present study was employed for the interface of the materials with remarkably different mechanical properties.
2. It is determined that the dental gold alloy and the dental porcelain were directly bonded without any intermediate layrs. This is new evidence for the system. It means that previous conclusion was rejected. The previous data were not obtained at interface itself but at the vicinity. The EPMA data which were previously obtained, correspond to the information in micrometer scale, while the present HREM data were obtained in nanometer scale.
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