The amorphous phase (AP) and nanocrystalline particle (NP)-reinforced composite coating was fabricated by laser cladding (LC) of the Ni45-WC mixed powders on the 304 stainless steel. An LC technique favored APs as well as NPs to be formed due to their rapid cooling and solidification characteristics, so the wear resistance of the Ni-base coating was improved. Microstructures and wear resistance of the fabricated composite coating were studied extensively. The test results showed that the microhardness and wear resistance of this LC coating were enhanced under the actions of NPs, APs and the ceramics. The study of the laser synthesis of NPs provided a theoretical basis for improving the LC technique.

中文翻译：

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激光沉积镍基复合材料在 304 不锈钢上的磨损性能和表征

通过激光熔覆（LC）Ni45-WC混合粉末在304不锈钢上制备非晶相（AP）和纳米晶颗粒（NP）增强复合涂层。LC技术有利于APs和NPs的形成，因为它们具有快速冷却和凝固的特性，因此提高了Ni基涂层的耐磨性。对制备的复合涂层的微观结构和耐磨性进行了广泛研究。测试结果表明，这种LC涂层的显微硬度和耐磨性在NPs、APs和陶瓷的作用下得到了增强。纳米粒子的激光合成研究为改进液相色谱技术提供了理论依据。