铝合金铸件的最大缺点是抗腐蚀能力较差,而且不够耐磨。因此需要在铸件表面作镀复处理,镀复方法有浸渍、电解、扩散、表面堆焊、喷涂或金属蒸发等。采用无电流镍磷合金作镀层,具有很多优点,它无需外接电源,实际上是一种化学镀复工艺。主要方法是把铸件浸入由镍盐和次磷酸钠以及稳定剂配成的溶液中,在一定的浓度控制下,使金属镍与磷在铸件 The biggest drawback of aluminum alloy castings is poor corrosion resistance, but not enough wear. Therefore, the need for casting surface treatment for plating, plating complex method impregnation, electrolysis, diffusion, surfacing, spraying or metal evaporation. The use of non-current nickel-phosphorus alloy coating, has many advantages, it does not require external power supply, in fact, is a chemical plating complex process. The main method is immersed in the casting by the nickel salt and sodium hypophosphite and stabilizer dubbed the solution, under the control of a certain concentration, the metal nickel and phosphorus in the casting