Abstract
We have deposited boron- and/or nitrogen-incorporated DLC films by radio-frequency magnetron sputtering, and systematically investigated the structure and the mechanical and tribological properties. The N content in DLC films increased with increasing N2 flow ratio [N2/(Ar + N2)], and it tended to be saturated at higher N2 flow ratios. The N content further increased with an increase in the B content of the targets. The B/C ratios of the films were almost the same as those of the B-containing targets regardless of the N content. Scratch tests revealed that the adhesion strength of N-incorporated DLC films decreased with increasing N2 flow ratio and the critical loads of B-incorporated films were lower than that of an unincorporated film. It was found that for B, N-coincorporated films there was an optimum N2 flow ratio at which the critical load became a maximum value, which was higher than that of the unincorporated film. The optimum N2 flow ratio increased with an increase in the B composition of the targets. The N-incorporated films peeled off during ball-on-plate friction tests. On the other hand, the B, N-coincorporated films showed good wear-resistant properties that the specific wear rates were lower than those of the unincorporated and B-incorporated films.
Original language | English |
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Pages (from-to) | 503-506 |
Number of pages | 4 |
Journal | Diamond and Related Materials |
Volume | 19 |
Issue number | 5-6 |
DOIs | |
Publication status | Published - 2010 May 1 |
Keywords
- Boron
- Diamond-like carbon
- Magnetron sputtering
- Nitrogen
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Chemistry(all)
- Mechanical Engineering
- Materials Chemistry
- Electrical and Electronic Engineering