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Humidity Tribology Effect On DLC Coating
The DLC coating exhibits very low COF against steel ball (below 0.1) under high vacuum and dry condition. However, it has also been reported that the DLC is very sensitive to the change of environmental conditions, particularly the relative humidity tribology(RH). The environment with a high humidity and oxygen concentration may lead to significant increase of the COF. In order to simulate the realistic environmental conditions of the DLC coating for tribological applications, reliable wear evaluation in a controlled and monitored humidity is in need. It allows users to properly compare the wear behaviors of the DLC coatings exposed to different humidity and to select the best candidate for the targeted application.
