Abstract：WC/Ni-based composite coatings added with different contents of La2O3 were clad on A3 steel substrates by high power semiconductor laser with Auto-Sync powder feeding system. The effect of different contents of La2O3 on the microstructure and phase structure of WC/Ni-based composite coating was investigated by scanning electron microscope (SEM), energy-dispersive analysis of X-rays(EDAX),X-ray diffraction(XRD). The microhardness and wear resistance of the coatings were measured by microhardness tester and friction-wear tester. The results revealed that with the addition of La2O3,the microstructure of the coatings was refined, purified and become well-distributed, the microhardness and wear resistance of the coatings were improved.
王震 闫岸如 王智勇. La2O3稀土对激光熔覆WC/Ni基复合涂层性能改善的研究[J]. , 2014, 21(4): 14-17.
WANG Zhen, YAN An-ru, WANG Zhi-yong. Study on Effect of La2O3 on Enhancement of Microstructure and Property of WC/Ni-Based Composite Coatings. , 2014, 21(4): 14-17.
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2014, Vol. 21 
