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本文通过电化学方法探讨了Ｎａ_２ＷＯ_４·２Ｈ_２Ｏ对化学镀镍液的影响。局部阳极和局部阴极极化曲线说明，Ｎａ_２ＷＯ_４·２Ｈ_２Ｏ的加入对Ｈ_２ＰＯ_２~－的氧化反应和Ｎｉ~（２＋）的还原反应都有促进作用，这与实际中获得的Ｎａ_２ＷＯ_４·２Ｈ_２Ｏ对化学镀Ｎｉ－Ｗ－Ｐ合金镀液具有活化作用的结果相吻合。
In this paper, the effect of Na_2WO_4 · 2H_2O on electroless nickel plating was discussed by electrochemical method. The local anodic and local cathodic polarization curves show that the addition of Na_2WO_4 · 2H_2O can promote the oxidation of H_2PO_2 ~ and the reduction of Ni ~ (2+). This is in agreement with the fact that Na_2WO_4 · 2H_2O, W-P alloy plating solution with the activation results of the match.