Abstract
The Ti–6Al–4V alloy is an important aviation material, but has a poor resistance to slide wear. Laser cladding of the Al3Ti + Ni/Cr/C + TiB2/Al2O3 + SiC/nano‐CeO2 preplaced powders on the Ti–6Al–4V alloy can form the Ti3Al/γ‐Ni matrix composite coating, which improves the wear resistance of the substrate. In this study, the Al3Ti + Ni/Cr/C + TiB2/Al2O3 + SiC/nano‐CeO2 laser‐cladded coating was researched by means of X‐ray diffraction, scanning electron microscopy, and energy dispersive spectrometry. The experimental results indicate that under the action of SiC/nano‐CeO2, this composite coating exhibited a fine microstructure. Furthermore, the proper content of nano‐CeO2 decreased the crack tendency. The results above indicated that, it is feasible to improve the tribological property of the Al3Ti + Ni/Cr/C + TiB2/Al2O3 laser‐cladded coating by adding of SiC/nano‐CeO2. Copyright © 2011 John Wiley & Sons, Ltd.
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