The topics of the applied technology of amorphous carbon film to reduce friction using diamond-like carbon (DLC) coated by the vacuum arc ion
plating process and to improve the gas barrier property using the amorphous carbon film by the atmospheric pressure plasma process are
introduced with the basic experimental results. For reducing friction, the super low friction coefficient below 0.01 has been found when the
tetrahedral amorphous carbon coating deposited by T-shape filtered arc deposition method [ta-C(T)] was evaluated the friction property under
oleic acid lubrication at pure sliding condition. It was thought that the low share strength tribofilm composed of water and oleic acid mono-layer
seemed to be formed on the sliding interface. For gas barrier performance, the amorphous carbon film deposited by the atmospheric pressure
plasma chemical vapour deposition (CVD) technique on poly(ethylene terephthalate) (PET) substrate was improved the oxygen transmission ratio
(OTR) around 30% compared with that of uncoated PET substrate. These advanced performance obtained by the optimum material combination
of DLC with lubricant and the original atmospheric pressure plasma CVD technique are expected to be applied on the actual application for the
different types of the industrial fields in near future. # 2012 The Japan Society of Applied Physics