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High temperature tribology of heavily boron doped diamond films against steel
International Journal of Refractory Metals & Hard Materials ( IF 2.794 ) Pub Date : 2020-01-09 , DOI: 10.1016/j.ijrmhm.2020.105191
A.V. Gaydaychuk; S.A. Linnik; S.P. Zenkin

Despite the fact that Fe, Co, and Ni catalyze the phase transition of diamond into graphite, the question of the applicability of diamond as a functional coating of a metal-cutting tool is still open. For this reason, our work contains investigation of wear and friction of heavily boron doped diamond films against steel at elevated temperature, as well as influence of boron concentration on diamond film oxidation resistance. The obtained data indicated that minimum CoF value is achieved in the temperature range within 570–670 °C and strongly depends on boron concentration in coating (CoF decreases with increasing of boron concentration). Wear rate has the same dependence as the CoF, whereas oxidation resistance decreases with increasing of boron concentration. Besides, the presented results are first obtained for boron doped diamond films synthesized under high B/C ratio conditions (of up to 333 ppm).
更新日期:2020-01-09

 

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