Establishment of design concept for reduction of static friction coefficient of hard carbonaceous coatings under dry condition

• Project/Area Number: 22360069
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Nagoya University
• Principal Investigator: UMEHARA Noritsugu 名古屋大学, 大学院・工学研究科, 教授 (70203586)
• Co-Investigator(Kenkyū-buntansha): KOUSAKA Hiroyuki 名古屋大学, 大学院・工学研究科, 准教授 (90362318) ; TOKOROYAMA Takayuki 名古屋大学, 大学院・工学研究科, 助教 (20432247) ; USAMI Hatsuhiko 名城大学, 理工学部, 教授 (80278324)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2010: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
• Keywords: トライボロジー / 機械要素 / 静摩擦 / DLC / ＤＬＣ / 凝着 / 湿度 / 動摩擦

Research Abstract

The purpose of this research is to establishment of design concept for reduction of static friction coefficient of hard carbonaceous coatings under dry condition. Plasma CVD coated DLC showed the increasing of surface roughness Ra with depositionperiod. The friction coefficient increased with the average inclined angle of asperities. The environmental control friction tester showed that high humid air increased friction of DLC. Fluorine contained DLC showed low friction even if in high humid air because of the reduction of adhesion. We proposed the design concept for reduction of static friction of DLC in the viewpoints of ploughing and adhesion term of friction.

Research Products

• [Presentation] Development of internal DLC coating method without surface roughness increase for high-performance suspension (2012)
  • Author(s): Akinobur Hanihara, Hiroyuki Kousaka, Takayuki Tokoroyama, Noritsugu Umehara
  • Organizer: ICPLANTS2012
  • Place of Presentation: Nagoya, Japan
  • Year and Date: 2012-03-09
• [Presentation] Development of internal DLC coating method without surface roughness increase for high-performance suspension (2012)
  • Author(s): Akinobur Hanihara, Hiroyuki Kousaka, Takayuki Tokoroyama, Noritsugu Umehara
  • Organizer: ISPLASMA2012
  • Place of Presentation: Nagoya, Japan
  • Year and Date: 2012-03-04
• [Presentation] Effect of film property on static and Kinetic friction coefficients of Si-containing diamond-lile carbon (2011)
  • Author(s): Akinobur Hanihara, Hiroyuki Kousaka, Takayuki Tokoroyama, Noritsugu Umehara
  • Organizer: ICMDT2011
  • Place of Presentation: Gamagori, Japan
  • Year and Date: 2011-05-19
• [Presentation] Development of high performance suspension deposited diamond-like carbon on the inner wall by surface wave-excited plasma (2011)
  • Author(s): Akinobur Hanihara, Hiroyuki Kousaka, Takayuki Tokoroyama, Noritsugu Umehara
  • Organizer: ISPLASMA 2011
  • Place of Presentation: Nagoya, Japan
  • Year and Date: 2011-03-06