1997 Fiscal Year Final Research Report Summary
Characterization of fuzzy interface in biomaterials by HREM
| 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 Nagasaki University, professor, 歯学部, 教授 (20037526)
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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
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| Project Period (FY) |
1995 – 1997
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| Keywords | High resolution electron microscopy / Functionally graded material / Interface / Biomaterial / Composite material / Ion engineering / Ceramics / Metal bond porcelain |
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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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