Development of Smart Tribosystem with Friction Induced Transformed Thin Layers

2017 Fiscal Year Final Research Report

• Project/Area Number: 25220902
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Nagoya University
• Principal Investigator: Umehara Noritsugu 名古屋大学, 工学研究科, 教授 (70203586)
• Co-Investigator(Kenkyū-buntansha): 後藤 実 宇部工業高等専門学校, 機械工学科, 教授 (00435455) ; 月山 陽介 新潟大学, 自然科学系, 助教 (00533639) ; 野老山 貴行 名古屋大学, 工学研究科, 助教 (20432247) ; 吉野 雅彦 東京工業大学, 工学院, 教授 (40201032) ; 川口 雅弘 地方独立行政法人東京都立産業技術研究センター, 開発本部開発第二部表面・化学技術グループ, 主任研究員 (40463054) ; 上坂 裕之 岐阜大学, 工学部, 教授 (90362318) ; 村島 基之 名古屋大学, 工学研究科, 助教 (70779389)
• Project Period (FY): 2013-05-31 – 2018-03-31
• Keywords: 超低摩擦 / ナノ構造層 / カーボン系硬質膜

Outline of Final Research Achievements

Carbonaceous hard coatings as DLC and CNx are attracted keen attention to show not only high wear resistance but also ultra low friction that is less than 0.01 of friction coefficient under severe sliding condition that liquid lubricants can not work. We developed two novel evaluation systems as the evaluation method of transformed layer of carbonaceous hard coatings with a reflective spectroscopy and the evaluation method of surface energy of sliding surface of carbonaceous hard coatings with an Environmental Scanning Spectroscopy. The first evaluation systems showed that thickness, roughness and mechanical properties of transformed layer of coatings governed ultra low friction phenomena with a thin solid film lubrication theory. The second evaluation system confirmed that low surface energy of sliding scar provided low friction properties. From both clear findings for ultra low friction of carbonaceous hard coatings, new carbonaceous hard coatings as ta-CNx coatings was proposed.

Free Research Field

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