The study on the correlation between characteristics of soft metallic layer in frictional interface and the tribological properties of soft-metal/DLC nano-composite coatings

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420093
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Ube National College of Technology
• Principal Investigator: GOTO Minoru 宇部工業高等専門学校, 機械工学科, 教授 (00435455)
• Co-Investigator(Renkei-kenkyūsha): UMEHARA Noritsugu 名古屋大学, 大学院・工学研究科, 教授 (70203586) ; TOKOROYAMA Takayuki 名古屋大学, 大学院・工学研究科, 准教授 (20432247) ; KANO Makoto 神奈川県産業技術センター, 機械・材料技術部, 副部長 (50443403) ; MIKI Hiroyuki 東北大学大, 学術フロンティア研究所, 准教授 (80325943) ; TAKENO Takanori 東北大学大, 大学院工学研究科, 助教 (00451617)
• Research Collaborator: FONTAINE Julien Ecole Centrale de Lyon, Laboratoire de Tribologie et Dynamique des Systèmes
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: トライボロジー / 薄膜 / ナノコンポジット / 銀 / 銅 / 複合ターゲット / スパッタ

Outline of Final Research Achievements

In this study, a silver/diamond-like carbon nanocomposite coating (Ag-DLC) and a copper/diamond-like carbon nanocomposite coating (Cu-DLC) have been prepared by RF magnetron sputter process using a concentric composite target (CCT) which composed of carbon base target and Ag or Cu tablet. The metal concentration in the coatings varied from less than 10 at.% to over 70 at.%, depending upon the tablet size in CCT. The tribological properties of those coatings were compared with both Ag-DLC and Cu-DLC deposited by different coating method. As a result, it is found that both the structure and hardness of films were not depending on the deposition methods, but tribological properties varied depending on the composition of the tribofilm formed on the counterface of film.

Free Research Field

トライボロジー