1999 Fiscal Year Final Research Report Summary
ANALYSIS OF MICROSCOPIC WEAR MECHANISM OF CERAMICS COATINGS BASED ON FRICTION TESTS IN THE CCD MICROSCOPE
| Project/Area Number |
09650156
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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 | YAMAGATA UNIVERSITY |
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Principal Investigator |
HOKKIRIGAWA Kazuo FACULTY OF ENGINEERING, YAMAGATA UNIVERSITY, ASSOCIATE PROFESSOR, 工学部, 助教授 (60173605)
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| Project Period (FY) |
1997 – 1999
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| Keywords | Ceramics / Coatings / Wear / Wear Mode / Wear Mechanism |
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| Research Abstract |
The purpose of this investigation is to analyse microscopic wear mechanism of ceramic coatings, based on friction tests in the CCD microscope. Following results were obtained ;
(1) Microscopic wear modes of ceramic coatings can be classified into following three modes ;
1) spalling of coating film at initial sliding passage
2) spalling of coating film after certain sliding passages
3) wear of coating film
(2) Wear modes of coating film can be classified into following two modes ;
1) flake formation : This is the severest wear mode of ceramics by macroscopic surface crack propagation.
2) powder formation : This is caused by microscopic surface crack propagation.
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