S043033 銀を含む非品質炭素膜を用いた導電性摺動要素([S04303]環境調和型の表面改質および薄膜コーティング(3))

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In this study, silver-containing amorphous carbon coatings as a electrically conductive tribo-element are investigated. The coatings were deposited onto 440C stainless steel and Si(100) by hybrid deposition technique composed of radio-frequency chemical vapor deposition and DC magnetron sputtering of silver target, and coatings with various concentration ranging from 42 at.%Ag to 100 at.%Ag were achieved. We focus on typical two specimens in this paper with higher concentration (Ag03) and lower concentration (Ag06). Friction and electrical contact resistance were measured in-situ condition using reciprocating tribometer equipped with electrical resistance measurement devices. We applied 1 N load and bearing steel (JIS SUJ-2) with 6.0 mm in diameter was used as a counter coating. For the Ag03 specimen, stable friction and electrical contact resistance were observed at the initial stage of the friction test, then the data was scattered. Optical image of the counter coating revealed that the pin was worn much, which indicated the friction between the steels and caused high and unstable friction. On the other hand, Ag06 showed stable and low friction (μ ? 0.14). Optical images after the friction tests clearly indicated that a metallic material transferred to the counter coating, which can result in the stable friction and stable electrical contact resistance in a same time.
一般社団法人日本機械学会の論文
2011-09-11