| Project/Area Number |
15K21120
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
Design engineering/Machine functional elements/Tribology
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| Research Institution | Kyoto Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | DLC膜 / 強度 / 評価 / 破壊 / DLC / ラマン / ドライコーティング / 損傷 / 繰り返し / 面圧 / 表面改質 |
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| Outline of Final Research Achievements |
As a new strength evaluation method for hard coatings such as Diamond-like Carbon (DLC), the cyclic indentation test method using ball indenter has been developed. And its test rig has also been fabricated. DLC coatings, which were prepared with UBM sputtering, were used in order to find validity of this test. Over 10000 times of indentations made DLC coating fracture on substrates under approximately 2.6 GPa of contact pressure and 120 per minute. Changing DLC coatings characteristics after the tests were found to be clear by Raman spectroscopy analysis for the indentation tracks.
On the other hand, the other test rig for 10 raised to the power of 7 times indentations within short time has also been developed and fabricated. DLC fracture was also found using it.
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