Although the applications of the amorphous carbon film
have been increased recently to reduce friction for the
sliding parts in the automotive engine1–5) and to improve the
oxygen barrier property of the poly(ethylene terephthalate)
(PET) bottle for the soft drink,6,7) there are several technical
issues to be improved, as shown in Table I. The optimum
material combination of diamond-like carbon (DLC) coating
with the environment friendly lubricant to reduce friction
markedly is required to be found in near future to improve
the environmental problems. The amorphous carbon film
deposited by the atmospheric pressure plasma chemical
vapour deposition (CVD) technique to improve the gas
barrier property is also expected to increase productivity
drastically. These recent technical topics for the super low
friction property using DLC coating of tetrahedral amorphous
carbon coated by T-shape filtered arc deposition
method [ta-C(T)] under the organic acid such as oleic acid
lubrication and the atmospheric pressure plasma CVD
technique which is used depositing for the amorphous
carbon on PET substrate for the superior gas barrier property
are introduced with the recent typical experimental results.