Tribological study of boron nitride films |
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Authors: | YM Chong Q Ye Y Yang WJ Zhang I Bello ST Lee |
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Affiliation: | Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong SAR, People''s Republic of China;Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, People''s Republic of China |
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Abstract: | Boron nitride (BN) films with different cubic and hexagonal phase compositions were deposited on silicon substrates via diamond interlayers by magnetron sputtering and electron cyclotron resonance microwave plasma chemical vapor deposition. The tribological behaviors of the BN films were investigated systematically using a ball-on-disc tribometer with silicon nitride as the counterpart. Comparison studies were also performed on sintered cubic and hexagonal BN compacts. The influence of phase compositions and surface roughness of BN coatings on their tribological characteristics was studied. The cubic BN (cBN) films showed excellent wear resistance against silicon nitride. The wear rate of the cBN films was estimated to be about 1.0 × 10?7 mm3/N m by measuring the cross-sectional area of the wear track after the sliding test over a distance of 12 km. |
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