铸铁表面等离子喷涂Mo涂层工艺研究
发布时间：2018-10-26 14:27
【摘要】：采用不同参数等离子喷涂方法在铸铁表面制备了钼涂层,利用SEM和EDS研究了涂层组织与断口形貌,并检测了涂层的显微硬度。结果表明,喷涂最佳工艺参数为主气流量72 L/min,喷涂距离107 mm,送粉速率14 g/min,功率18 kW。涂层与基体以机械结合为主,Mo涂层的硬度明显高于基体的硬度,涂层显微硬度分散性和不均匀性较大,这是由于涂层组织结构的非均匀性和涂层中的缺陷造成的。
[Abstract]:Molybdenum coating was prepared on cast iron by plasma spraying with different parameters. The microstructure and fracture morphology of the coating were studied by SEM and EDS, and the microhardness of the coating was tested. The results show that the best process parameters are the main gas flow rate of 72 L / min, the spraying distance of 107 mm, and the feed rate of 14 g / min and the power of 18 kW.. The hardness of the Mo coating is obviously higher than that of the substrate, and the microhardness of the coating is dispersive and non-uniform, which is caused by the non-uniformity of the coating structure and the defects in the coating.
【作者单位】： 常州工程职业技术学院机电与汽车工程学院;
【基金】：江苏高校品牌专业建设工程资助项目(TAPP,PPZY2015C235)
【分类号】：TG174.442
[Abstract]:Molybdenum coating was prepared on cast iron by plasma spraying with different parameters. The microstructure and fracture morphology of the coating were studied by SEM and EDS, and the microhardness of the coating was tested. The results show that the best process parameters are the main gas flow rate of 72 L / min, the spraying distance of 107 mm, and the feed rate of 14 g / min and the power of 18 kW.. The hardness of the Mo coating is obviously higher than that of the substrate, and the microhardness of the coating is dispersive and non-uniform, which is caused by the non-uniformity of the coating structure and the defects in the coating.
【作者单位】： 常州工程职业技术学院机电与汽车工程学院;
【基金】：江苏高校品牌专业建设工程资助项目(TAPP,PPZY2015C235)
【分类号】：TG174.442
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