摘要
研究了碱性锌酸盐锌铁合金电镀工艺，探讨了各工艺条件对镀层铁含量的影响。通过控制工艺条件，获得了含铁量为9％～12％的光亮锌铁合金镀层。最佳工艺条件为：ZnO 8～10g／L，NaOH 110—130g／L，三乙醇胺20～30mL／L，FeSO4·7H2O 3．3～4．5g／L，添加剂30～60mL／L，阴极电流密度1～2A／dm^2，搅拌速率160～240r／min，温度28～35℃。电化学极化测试和中性盐雾腐蚀试验的结果表明，采用此工艺所得锌铁合金镀层的耐蚀性明显优于纯锌镀层。
An alkaline zincate Zn-Fe alloy electroplating process was studied and the effects of process conditions on Fe content in deposit were studied. A bright Zn-Fe alloy coating containing 9%-12% （mass fraction） Fe was obtained by controlling process conditions. The optimal process conditions are as follows： ZnO 8-10 g/L, NaOH 110-130 g/L, triethanolamine 20-30 mL/L, FeSO4·7H2O 3.3-4.5 g/L, additives 30-60 mL/L, cathodic current density 1-2 A/dm^2, agitation rate 160-240 r/min, and temperature 28-35 ℃. The results of electrochemical polarization and neutral salt spray corrosion test showed that the corrosion resistance of Zn-Fe alloy coating is superior to that of Zn coating.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2009年第4期7-10,共4页
Electroplating & Finishing
关键词
锌铁合金
电镀
耐蚀性
中性盐雾试验
电化学
zinc-iron alloy
electroplating
corrosion resistance
neutral salt spray test
electrochemistry
