Abstract: Six types of micro-textures with different diameters and area densities are produced on the surfaces of the TC11 alloy. The wear characteristics of the textured and untextured surfaces are investigated at 500 degrees C. It is found that the regular textured surface enhances the amount of oxygen adsorbed on the material surfaces, which promotes the formation of more tribo-oxides on the textured surface compared to the untextured samples, and thus significantly enhances the anti-wear ability of the TC11 alloy. A micro-dimpled structure with relatively small-diameter and high-density is likely to improve the tribological properties of TC11 alloy at 500 degrees C. (C) 2015 Elsevier Ltd. All rights reserved.

Key words: Metal wear; Surface texture; Sliding friction; High temperature

Published in TRIBOLOGY INTERNATIONAL, 92 136-145; 10.1016/j.triboint.2015.06.003 DEC 2015