Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5362041 | Applied Surface Science | 2009 | 7 Pages |
Abstract
This work describes the microstructure and mechanical properties of B-C-N-H films synthesized by medium frequency magnetron sputtering from a boron target in a N2Â +Â CH4Â +Â Ar gas mixture. The increase in the CH4 flow rate increases the carbonaceous compound species, causes the increase of the C atomic concentration and promotes the formation of sp3-hybridized carbon. The change of hardness with the CH4 flow rate had a relationship with the residual stress. The coefficient of friction was reduced approximately from 0.8 to 0.18, and wear resistance was considerably improved by increasing the flow of CH4 gas component from 0 to 40Â sccm. The change of films' hardness was discussed and attributed primarily to the internal defects and bonding characteristics, while the superior tribological properties of the films could be assigned to the formation of sp3-hybridized carbon and the C-H bonding.
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Authors
Youming Chen, Shengrong Yang, Junyan Zhang,