DLC in Wear and Tribological Applications

The major drawback of DLC is it lack of high-temperature resistance and thickness limitation which restricts its applications in tool coating. In this respect, DLC is similar to CVD diamond (see Ch. 13, Sec. 5.2). 

I n tri boiogical applications, DLC coatings. have good potential, particularly in non-lubricated conditions and in vacuum environment. These coatings, when rubbed against themselves, have a remarkably low coefficient of friction (0.02 - 0.04) and, because of their superior hardness, are much more wear resistant than Teflon or molybdenum disulfide. In addition, DLC coatings are very smooth in the as-deposited condition, which is another advantage in friction applications. 

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