Title

Synthesis and characterization of low-friction Al-DLC films with high hardness and low stress

RIS ID

121166

Publication Details

Pu, J., Zhang, G., Wan, S. & Zhang, R. (2015). Synthesis and characterization of low-friction Al-DLC films with high hardness and low stress. Journal of Composite Materials, 49 (2), 199-207.

Abstract

Al-diamond-like carbon films were successfully deposited by the reactive magnetron sputtering of Al target (>99.9%) in the argon and methane gas mixture atmosphere under selected substrate negative bias with high pulse cycle duty (50%). The microstructure, mechanical and tribological properties of the as-prepared Al-diamond-like carbon films were investigated. Results showed that these films were dominated by the typical amorphous structure, and the internal stress of films dramatically decreased while the hardness remained a high level (20 GPa) with increasing substrate pulse negative bias. Especially, the Al-diamond-like carbon film fabricated at substrate bias of 500 V displayed a longer wear life and lower friction coefficient due to both itself superior mechanical properties and the formation of continuous and compact graphitized transfer layer, making it a good candidate for solid lubricating film in engineering applications.

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Link to publisher version (DOI)

http://dx.doi.org/10.1177/0021998313515291