Preparation of W-Mo copenetrated layer on Ti6Al4V titanium alloy surface by double glow discharge technique and its corrosive-wear properties

To improve the corrosive-wear resistance of the Ti6Al4V titanium alloy, W-Mo co-penetrated layer was prepared on Ti6Al4V titanium alloy surface by double glow discharge technique. The corrosive-wear properties of the co-penetrated layer were investigated. The results show that W-Mo co-penetrated layer combined well with the substrate, and the layer was composed of deposited layer, transition layer and diffused layer. Compared with Ti6Al4V substrate, the alloying layer exhibited a lower friction coefficient, improved wear morphology and an obviously decreased wearing volume in 5wt%NaCl and 5wt% H2SO4 solutions. All these indicate that W-Mo co-penetrated layer can enhance the corrosive-wear resistance of the Ti6Al4V titanium alloy. Copyright © 2013, Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.