Interest in low-friction materials and coatings has increased tremendously in recent years, primarily because of increasing demands for higher energy efficiency and longer durability in current as well as future tribological systems. Recent systematic studies in our laboratory has led to the synthesis of novel diamondlike carbon films that can provide friction coefficients as low as 0.001 and wear rates of 10-11-10-10 mm3/N.m. Overall, our research has confirmed that carbon as an element is rather unique and offer the kind of flexibility that one needs in designing such novel coatings with superlow friciton and wear properties. This talk will provide an overview of the mechanistic understanding of superlubricity in such films. Examples of current and future tribological applications for such films will also be presented.
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