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介绍了次亚磷酸钠作为还原剂的化学镀镍的原理，镀液组成及镀层性能特点．并对影响镀覆的各种因素进行了讨论．
The principle of electroless nickel plating with sodium hypophosphite as reductant, the composition of bath and the properties of coating are introduced. The various factors affecting the plating were discussed.