研究了化学镀Ni-P-B合金溶液的稳定性和镀层的结构.结果表明,增大镀液中硫酸镍、硼氢化钠、次亚磷酸钠浓度及溶液的pH值,会降低镀液的稳定性,而甲酸浓度增大则会显著改善镀液的稳定性.镀层中硼含量增加使磷含量下降,且镀层结构由非晶向微晶转变.镀层硬度随硼含量增加而增大,400 ℃热处理后镀层硬度具有最大值.
参考文献
| [1] | Mital C K;Shrivastava P B .Electroless nickel-phosphorus-boronalloy coatings[J].Metal Finishing,1986,10:67-70. |
| [2] | EI-Mallah A T;Abbas M H;Morsy M S.Autocatalytic alkaline Ni-P-B plating baths[J].Metal Finishing,1991(07):7-10. |
| [3] | EI-Mallah A T;Abbas M H;Nassar M M.Electroless nickel-phosphorus-boron alloys[J].Metal Finishing,1993(05):19-21. |
| [4] | Kumar S P;Kesavan N P.Structural transformations in electroless Ni-P-B deposits[J].Plating and Surface Finishing,1994(05):96-100. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%