%N 12
%V 43
%X Laser cladding of the Ti3Al + TiB2 pre-placed alloy powder on the Ti?6Al?4 V alloy in nitrogen protective atmosphere can form the Ti3Al + TiB2/TiN composite coating, which can dramatically improve the wear resistance of the Ti?6Al?4 V alloy surface. In this study, the Ti3Al + TiB2/TiN composite coatings on the Ti?6Al?4 V alloy have been researched by means of X-ray diffraction, SEM and energy dispersive spectrometry. It was found that there is a metallurgical combination between the Ti3Al + TiB2/TiN composite coating and the substrate. The microhardness of the Ti3Al + TiB2/TiN composite coatings were 3 ~ 4 times higher than that of the Ti?6Al?4 V alloy because of the actions of the Ti3Al + TiB2/TiN hard phases and the grain refinement strengthening. Moreover, the wear mass losses of the Ti3Al + TiB2/TiN composite coatings were much lower than that of the substrate. Copyright ? 2011 John Wiley & Sons, Ltd.
%L eprints2811
%K Laser cladding technology, Interface, surfaces, Composite coating
%I John Wiley & Sons, Ltd
%D 2011
%A J. N. Li
%A C. Z. Chen
%A B. B. Cui
%A Tiziano Squartini
%J Surface and Interface Analysis
%P 1543-1548
%R 10.1002/sia.3809
%T Surface modification of titanium alloy with the Ti3Al + TiB2/TiN composite coatings