Micro structures and wear properties of in situ formed composite coatings produced by laser alloying technique

摘要

Laser-surface alloying of titanium alloy Ti-6Al-4V with C and Si mixed powders has been carried out. The composite coatings, thickness of about 0.7 mm, mainly consisting of titanium carbides and silicides, have a hardness of about 1500 HV_(0.1), and the wear resistance is 4 times more than that of the as-received.