AZ31D镁合金上直接化学镀镍的较佳工艺条件为:硫酸镍14~22g/L,次磷酸钠20~28 g/L,柠檬酸5~7 g/L,乙酸钠9~17 g/L,氟化氢铵8 g/L,40%(体积分数)的氢氟酸12 mL/L,硫脲2 mg/L,pH(用氨水调节)6.2~6.4,温度75~85℃,时间10~60 min.在此条件下获得的化学镀镍层外观良好,磷含量为6%~10%(质量分数),与镁合金基体结合牢固,耐蚀性能好且沉积速率较快.
参考文献
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