论文部分内容阅读
为了探讨超音速等离子-感应重熔复合技术制备粗粉高铝铜合金材料涂层的能力以及所制备涂层的特点,采用超音速等喷涂预制涂层,采用高频感应加热对涂层重熔处理,研究了该复合技术制备涂层的微观组织结构特征和界面结合状态.结果发现:粗粉高铝铜合金粉体超音速等离子喷涂层氧化严重,尤其在界面处聚集了大量的氧化物,使涂层和基体不能实现有效结合,涂层中较多的氧化和孔隙,隔离了层流片的熔结,并且涂层成分偏析严重.经过感应重熔后的涂层组织细小均匀,大量的氧化物排出,涂层和基体实现了冶金结合,同时感应加热使涂层成分分布更加均匀.研究结果表明超音速等离子-感应重熔复合技术具有制备高铝铜合金粗粉涂层的能力,在涂层与基体界面处能够形成宽度为10～15μm的冶金结合带.
In order to investigate the capability of supersonic plasma-inductive remelting compounding technology to prepare the coating of coarse-grained Al-Cu alloy and the characteristics of the prepared coating, the coating was pre-coated by supersonic spraying, high-frequency induction heating The microstructure and interfacial bonding state of the coating prepared by the composite technology were studied.The results showed that the oxidation of the supersonic plasma sprayed coating of coarse powder high Al-Cu alloy powder was serious, especially a large amount of oxide aggregated at the interface, So that the coating and the substrate can not be effectively combined with more oxidation and porosity in the coating to isolate the fusing of the laminar flow and the composition of the coating is seriously segregated.After induction remelting the coating has a fine and uniform microstructure and a large amount of Oxide discharge, the coating and the substrate to achieve metallurgical bonding, while the induction heating coating components more evenly distributed.The results show that supersonic plasma - induction remelting composite technology with high aluminum copper alloy powder coating capacity, in the The coating and the substrate interface to form a width of 10 ~ 15μm metallurgical bonding tape.