2011 Fiscal Year Final Research Report
Development of biocompatible magnesium alloy with high corrosion resistance using hybrid coating consisting of thick DLC film
| Project/Area Number |
21560086
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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 |
Materials/Mechanics of materials
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| Research Institution | Gifu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TOKAJI Keiro 岐阜大学, 工学部, 名誉教授 (80021616)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 疲労 / DLC皮膜 / 複合皮膜 / 腐食疲労 / 材料強度 / 生体環境 |
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| Research Abstract |
Thick DLC, multi-layered DLC, high adhesion type DLC and low arching type DLC were deposited on magnesium alloy, AZ80, and fatigue tests were performed in air and 3% NaCl solution. It was found that both multi-layered and low arching deposition played important roll to improve fatigue strengths under corrosive environment. Subsequently, WC-12Co was thermally sprayed between DLC film and substrate as an interlayer. The hybrid coating could well improve both wear-resistance and fatigue strength. The optimal thickness of an interlayer was proposed based on the fatigue tests.
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