化工设备的表面化学镀与性能研究

Study on Surface Chemical Plating and Properties of Chemical Equipment

采用化学镀的方法在磷化工设备表面沉积了Ni-B涂层,对比分析了不同沉积时间下涂层的沉积速度和显微形貌,并分析了涂层的耐腐蚀性能和磨损性能。结果表明,沉积时间超过80 min后涂层的沉积速度基本为0;沉积时间为80 min的Ni-B涂层的表面粗糙度Ra为177 nm,相较于未进行化学镀的基材的表面粗糙度有所增加;经过表面化学镀处理后的Ni-B涂层的耐腐蚀性能相对化工设备基材有明显提高,且摩擦系数明显低于化工设备基材;在磷化工设备进行化学镀后,主要磨损机制从基材的磨粒磨损转变为涂层的粘着磨损。

Ni-B coating was deposited on the surface of phosphorus chemical equipment by electroless plating method, the deposition rate and microstructure of the coating were compared and analyzed, and the corrosion resistance and wear resistance of the coating were analyzed. The results show that the deposition rate of the coating is 0 when depositing time over 80 rain. When depositing time is 80 rain, the surface roughness of Ni-B coating is 177 nm, and the surface roughness of the substrate increases compared with that of electroless plating. The corrosion resistance of Ni-B coating after electroless plating significantly increases, and the friction coefficient is significantly lower than that of chemical equipment. After electroless plating, the main wear mechanism changes from abrasive wear of the matrix to adhesive wear of the coating.