%0 Journal Article
%@ 0142-2421
%A Li, J. N.
%A Chen, C. Z.
%A Cui, B. B.
%A Squartini, Tiziano
%D 2011
%F eprints:2811
%I John Wiley & Sons, Ltd
%J Surface and Interface Analysis
%K Laser cladding technology, Interface, surfaces, Composite coating
%N 12
%P 1543-1548
%T Surface modification of titanium alloy with the Ti3Al + TiB2/TiN composite coatings
%U http://eprints.imtlucca.it/2811/
%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.