摘要
研究了镀液组分对Zn-Ni合金的电沉积过程、成分、耐蚀性和表面形貌的影响。研究表明:电沉积Zn-Ni合金属于一种典型的异常共沉积现象。镀液中的Zn2+会阻碍Ni 2+的放电过程,使得合金中Ni的质量分数降低。通过增加镀液中Ni 2+的浓度,可以有效增大Zn-Ni合金中Ni的质量分数。含Ni 17%的Zn-Ni合金具有最佳的耐蚀性。合金中Ni的质量分数的增大,有利于细化颗粒,降低表面粗糙度。
Effect of plating bath formula on the electrodeposition process, composition, corrosion resistance and surface morphology of Zn-Ni alloy was investigated. Results showed that electrodeposition of Zn-Ni alloy was considered as a kind of anomalous co-deposition phenomenon. Zinc ions would hinder the discharge process of nickel ions, then to decrease the mass friction of nickel in Zn-Ni alloy. It was effective to increase the mass friction of nickel through increasing the concentration of nickel ions in plating bath. The Zn-Ni alloy in which the mass friction of nickel was 17% has the optimal corrosion resistance. Increasing of the mass friction of nickel was beneficial to grain refinement and decrease the surface roughness of alloy.
出处
《电镀与环保》
CSCD
北大核心
2017年第3期13-16,共4页
Electroplating & Pollution Control
关键词
Zn—Ni合金
异常共沉积
耐蚀性
Zn-Ni alloy
anomalous co-deposition
corrosion resistance
