The result of experiment shows that the hardness will increase and the plating rate will decrease with the rising of concentration ratio of nickel sulfate and hypophosphite.

• 最后的试验结果表明,在其它条件不变的情况下,随着镍磷摩尔浓度比的增大,镀层硬度逐渐上升,而镀速逐渐下降;