Abstract
Several physical properties of graphite whiskers have been measured in ultra-high vacuum and other controlled atmospheres. The properties which have been studied include elasticity, electrical resistance, and cohesion between whiskers. The atmosphere dependence of these properties suggests that surface adsorption of contaminants is the most important factor in producing changes in graphite friction. There is some evidence that the adsorbed gases reduce surface roughness on an atomic scale. This ability of the adsorbed film to smooth out surface asperities may be used to explain some of the friction and wear characteristics of graphite.
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