Friction and Wear Properties of Ti-6Al-4V Surface Modified by Nitriding-Mo Plating-Sulfurizing Composite Treatment

Abstract:

A composite layer was prepared on the Ti-6Al-4V alloy surface by ion nitriding, magnetron sputtering Mo and ion sulfurizing composite treatment technique. The phase structure, morphology, and cross-sectional element distribution of composite layer were analyzed. Friction and wear properties of composite layer were tested by MM-200 laboratory tester. XRD analysis showed that the composite layer was mainly comprised of Ti, Mo, MoS2, TiN, and transition layer. This composite layer is perfect wear-resistant surface due to existence of self-lubricating MoS2 on hard Mo and TiN layers with good anti-friction ability. Thereby, the results of friction and wear test showed that anti-wear performance of Ti-6Al-4V alloy after composite treatment was remarkably improved under dry and sliding conditions. Both the friction coefficient and the wear loss of the nitriding-Mo plating-sulfurizing layers were lower than that of the nitriding layer due to the formation of the MoS2 layer on Mo and TiN layers.

• Periodical: Advanced Materials Research (Volumes 139-141)
• Pages: 439-442
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.139-141.439
• Online since: October 2010
• Authors: Li Jie Wang, Jun Sheng Yang, Ya Zhe Xing
• Keywords: Composite Layer, Ion Sulfurizing, Ion-Nitriding, Magnetron Sputtering, Ti6Al4V

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