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采用真空熔烧法制得钴基合金———碳化钨复合涂层材料,借助扫描电子显微镜、X射线衍射仪、显微硬度计等先进的测试手段对涂层的组织结构和表面形貌进行观察分析。应用盘销式摩擦磨损试验机对不同碳化钨含量的复合涂层材料和淬火态45钢进行了磨损试验。试验结果表明,在相同试验条件下,复合涂层的耐磨性显著高于淬火钢,且其耐磨性随碳化钨含量的增加而提高,淬火钢的耐磨性随着载荷的增加迅速降低,而复合涂层的耐磨性则变化不大。
The cobalt-based alloy --- tungsten carbide composite coating material was prepared by vacuum melting method. The microstructure and surface morphology of the coating were observed by means of advanced testing methods such as scanning electron microscope, X-ray diffraction and microhardness tester analysis. The abrasion test was carried out on the composite coating materials with different tungsten carbide content and quenched steel 45 by using the disc-wear friction tester. The test results show that under the same test conditions, the wear resistance of the composite coating is significantly higher than that of hardened steel, and its wear resistance increases with the increase of tungsten carbide content. The wear resistance of hardened steel decreases rapidly with the increase of load , While the wear resistance of composite coatings changed little.