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采用５ｋＷＣＯ２激光器，对ＺＡ１１１合金表面的Ｎｉ－ＷＣ等离子涂层进行了熔覆处理。利用ＳＥＭ和Ｘ射线衍射分析了激光层中的组织分布，并对激光处理后的试样进行了耐磨性实验。实验结果表明，激光熔层中的组织以镍铝基的金属间化合物Ａｌ３Ｎｉ，Ａｌ３Ｎｉ２，ＡｌＮｉ和Ｎｉ３Ａｌ为主；ＷＣ颗粒基本在熔区中熔化，在冷却过程中以弥散碳化物形式析出。这些组织的存在使得激光熔层具有很高的硬度，其润滑磨损耐磨性为未经激光处理喷涂层的１．７５倍和Ａｌ－Ｓｉ合金基体的２．８３倍。
Using 5kWCO2 laser, the Ni-WC plasma coating on the surface of ZA111 alloy was cladded. The distribution of the microstructure in the laser layer was analyzed by SEM and X-ray diffraction. The wear resistance of the laser-treated sample was tested. The experimental results show that the microstructure of the laser cladding layer is dominated by Ni-Al intermetallic compounds Al3Ni, Al3Ni2, AlNi and Ni3Al. The WC particles are mainly melted in the melt zone and precipitated in the form of dispersed carbides during cooling. The existence of these organizations makes the laser cladding has a very high hardness, abrasion resistance of its wear and tear was 1.75 times the laser-treated spray coating and 2.83 times the Al-Si alloy matrix.