In order to improve the surface performance of Heating Ventilation Air Conditioning( HVAC) copper alloy drain-pipe, Ni-P/TiN coating was prepared on the surface of copper alloy drain-pipe substrate by electroless plating, the effects of TiN mass concentration on the phase composition, surface and cross section morphology, hardness and wear resistance of electroless coating were studied. The results show that the main phases of the copper alloy matrix without coating are CuZn and CuZn5 , and the surface coating is mainly composed of amorphous Ni. Proper addition of TiN in the base solution will form a coating with good quality containing cellular particles, while excessive addition of TiN will make the quality of the coating deteriorate. The hardness of the surface coating is obviously higher than that of the copper alloy substrate, and the hardness of the surface coating increases with the increase of TiN mass concentration in the plating solution;When the TiN mass concentration is 10 g/L, the hardness and wear rate of the surface coating are 633 HV0.1 and 0.93×10-8 g/(r·N) respectively, which have relatively good wear resistance, and the wear mechanism at this time is mainly oxidation wear.
关键词
暖通空调管道/铜合金/表面镀层/镀液中TiN质量浓度/形貌/摩擦学性能
Key words
Heating Ventilation Air Conditioning(HVAC) pipe/copper alloy/surface coating/TiN mass concentration/morphology/tribological properties
维普
万方数据