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化学镀镍是一种新的镀镍方法,在设备维修中,可用来恢复零件的少量尺寸,既经济,又简便。因此它是一种很有发展前途的维修手段。一、化学镀镍的原理在弱酸性溶液中,还原剂次磷酸钠(又名次亚磷酸纳)在金属铁的接触下,能把氯化镍溶液中的镍离子还原成金属镍。同时部分氢离子和镀液中的镍离子作用生成金属镍沉淀在金属表面上,而氢离子因失去电子而
Electroless nickel plating is a new nickel plating method that can be used to restore a small number of parts in equipment maintenance, both economical and easy. So it is a very promising means of repair. First, the principle of electroless nickel In weak acid solution, the reductant sodium hypophosphite (also known as sub-sodium phosphite) in contact with the metal iron, nickel chloride solution can be reduced to nickel metal ions. At the same time part of the hydrogen ions and nickel ions in the bath to produce metal nickel precipitation on the metal surface, and hydrogen ions due to the loss of electrons