Currently, sputtered molybdenum disulphide is an established coating in the field of space applications. However, when used in air, molybdenum disulphide loses much of its lubricating power, thus preventing in-air ground testing. In this work, the tribological properties in vacuum, dry N2 and air of a-C:H films produced by radio frequency plasma assisted chemical vapour deposition (RF PACVD) were studied in order to assess their potential for applications in space. We demonstrated that diamond-like carbon (DLC) films deposited at low bias voltage show lubricating capacity under vacuum conditions. However, the shorter lifetime of these DLC films compared to MoS2 under vacuum is considered to be an important limiting factor.
Study of RF PACVD diamond-like carbon coatings for space mechanism applications
1999
6 Seiten, 30 Quellen
Conference paper
English
Study of RF PACVD Diamond Like Carbon coatings deposited at low bias for vacuum applications
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