Development of wear-resistant aluminum alloy by multilayer coating with gradient hardness at nano-scale thickness
| Project/Area Number |
25420005
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Ibaraki University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
鈴木 秀人 茨城大学, 工学部, 名誉教授 (30090369)
崎野 純子 茨城大学, 工学部, 技術職員 (40272116)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | ダイヤモンドライクカーボン / アルミニウム合金 / 表面改質 / トライボロジー / UBM sputtering / 硬度傾斜膜 / 疲労信頼性保証 / ﾀﾞｲﾔﾓﾝﾄﾞﾗｲｸｶｰﾎﾞﾝ / ｱﾙﾐﾆｳﾑ合金 / 疲労信頼性 |
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| Outline of Final Research Achievements |
The purpose of this research is to improve the adhesion between the DLC film and Al alloy by only in the film depositing process by UBMS equipment and to create Al alloy which can withstand harsh environments used at dry sliding.First, we clarified the effect of UBMS film depositing conditions on film hardness, elastic modulus and film depositing rate, and could be deposited hardness gradient AlN film and hardness gradient AlCrN film with film thickness and hardness controlled step by step on Al alloy.Next, it was revealed that Al alloy having a hardness gradient AlN film as the intermediate layer and a DLC layer on the outermost surface shows a low friction coefficient and wear life is improved comlared to DLC having no gradient AlN film. Furthermore, it was clarified that the DLC/AlNG film does not lower the fatigue strength reliability. Based on the above, the Al alloy developed in this research is expected to be used for sliding machines component.
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Report
(5 results)
Research Products
(16 results)
