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通过对镀镍液成分的改变、SEM观察、称重测量和硬度对比等方法确立了在等离子电沉积作用下,主盐和添加剂的种类及含量对镀层的结构、生长速度、表面硬度的影响规律。结果表明,以NiSO4为主盐的镀液,其含量不可过高,在100 g/L为宜,含量过高会导致表面结构疏松,镀层硬度下降;以NiCl2为主盐的镀液主盐含量可维持较大值在150～200 g/L,镀速和镀层硬度随主盐含量增加而增加;以C6H5O7Na3为添加剂的镀液,随C6H5O7Na3的含量增加镀层可逐渐变得致密,镀速先增加后减少,硬度则逐渐得到提升;以C12H25SO4Na为添加剂的镀液,随C12H25SO4Na含量的增加,镀层的生长速度变化不大,硬度却有逐步缓慢下降的趋势。
The influence of the type and content of main salt and additive on the structure, growth rate and surface hardness of the coating was established by changing the composition of nickel plating solution, SEM observation, weighing measurement and comparison of hardness. . The results show that the content of NiSO4-based plating solution can not be too high at 100 g / L. If the content is too high, the surface structure is loose and the hardness of the coating is decreased. The main salt content of NiCl2-based plating solution The deposition rate and coating hardness increase with the increase of main salt content. The coating with C6H5O7Na3 as additive increases the coating density gradually with the increase of the content of C6H5O7Na3, and the coating speed first increases The hardness of the coating increased gradually. With the addition of C12H25SO4Na, the growth rate of the coating did not change much with the increase of the content of C12H25SO4Na, but the hardness tended to decline gradually.