| Project/Area Number |
13650153
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
設計工学・機械要素・トライボロジー
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| Research Institution | NAGASAKI UNIVERSITY |
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Principal Investigator |
URA Akira NAGASAKI UNIVERSITY. FACULTY OF ENGINEERING, PROFESSOR, 工学部, 教授 (40037825)
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| Co-Investigator(Kenkyū-buntansha) |
NAKASHIMA Akira NAGASAKI UNIVERSITY. FACULTY OF ENGINEERING, RESEARCH ASSOCIATE, 工学部, 助手 (30108344)
KAWAZOE Tuyoshi NAGASAKI UNIVERSITY. FACULTY OF ENGINEERING, PROFESSOR, 工学部, 教授 (40253629)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2002: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2001: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | tribology / fretting / micro slip / occurrence of crack / coated surface / PVD / CVD / crack propagation / thin-film / トライボ損傷 / コーテイング薄膜 / フレッテイング亀裂 / 被膜材 / 被膜接着強度 / 真空蒸着 / 化学蒸着 / 溶射材 / CVD法 / PVD法 / トライポロジー |
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| Research Abstract |
The Fretting is a typical tribological failure that will be produced on the contact surface caused by repeating micro slip under high contact pressure.
The research subject is to observe the form of occurrence in detail and to make clear the mechanism of occurrence of surface crack on the thin- film coated surface through fretting. Accordingly we made the various test pieces carried out a coating on the same material of S45C.by the various coating method like CVD, PVD and ion plating. In the series of experiments this year, the occurrence of crack failure on the thin- film coated surface were observed and the propagation of the crack as well as the direction of the propagation, especially about which direction of a circumference of contact scar or of depth gone through the thin-film. As results of the experiments a few distinctive features of fretting phenomena on the thin-film coated of nearly 2μm have been obtained. That is the crack propagation to the depth from a surface to be limited extremely comparing to the non-coated surface. This result suggests how the thin-coated surface is desirable on the case of protection of fretting. After this we are planning to fretting test more accurately and systematically to get the suitable thin- film coated material as tribology material.
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