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采用激光熔覆工艺 ,利用铜合金体系的熔体分离性质 ,在ZL10 4合金表面成功地制备出了LCC Cu自生复合材料涂层。LCC Cu复合材料的基体组织是呈枝晶或枝状胞晶的过饱和 (Cu ,Ni)固溶体 ,以由Laves相、金属间化合物或固溶体等亚组织所构成的球形颗粒为增强体 ,球形颗粒增强体的亚组织形态呈颗粒状和穗状。在空气中的干滑动摩擦磨损试验结果表明 ,LCC Cu复合材料的耐磨性能比QZ5合金铸铁的稍好 ,远远优于ZL10 4合金的
The LCC Cu autogenous composite coating was successfully prepared on the surface of ZL10 4 alloy by using the laser cladding technology and utilizing the melt separation property of the copper alloy system. The matrix structure of LCC Cu composites is supersaturated (Cu, Ni) solid solution with dendrite or dendritic cell crystal, with spherical particles composed of sub-structures such as Laves phase, intermetallic compound or solid solution as reinforcing bodies, spherical particles Enhance the sub-tissue morphology was granular and spike. The results of dry sliding friction and wear test in air show that the wear resistance of LCC Cu composite is slightly better than that of QZ5 alloy cast iron and much better than that of ZL10 4 alloy