近几年用镍铁合金套铬作装饰性镀层,受到国内外的重视。其特点是用较廉价的铁代替一部分镍,可节约15～30％镍。镍铁合金镀液的浓度比亮镍镀液低三分之一,相对地减少了镀液成本和废水的处理费用。用一种铬合剂使铁在镀液中保持亚铁形式,也就消除了如光亮镀镍溶液中可能出现的铁杂质和污染问题。镍铁合金不会钝化。这使它能够很好的接受下一步光亮镀铬,而且能在第 In recent years, nickel-iron alloy sleeve chrome decorative coating, by domestic and foreign attention. Its characteristic is to replace a part of nickel with cheaper iron, can save 15 ~ 30% nickel. The nickel-iron alloy plating solution is one-third lower in concentration than the bright nickel plating solution, which reduces the cost of the plating solution and the cost of the wastewater treatment. The use of a chromium compound to keep iron in the bath in the form of ferrous iron also eliminates iron impurities and contamination problems that may occur as in bright nickel plating solutions. Ferronickel does not passivate. This makes it well accepted the next bright chrome, but also in the first