通过添加辅助络合剂和控制起始电流密度的方法，可以增强无氰电镀时阴极的极化。
Through adding assistant complexing agent and controlling initial current density, cathodic polarization was intensified in cyanide-free electrolyte.
电镀分有氰电镀与无氰电镀两类。乡镇工业电镀行业的环境污染最主要是氰污染和铬污染。
The main pollutants from electroplating enterprises of township and village industries (TVIs) in China are cyanide and chromium.
本文介绍了国内无氰镀银研究情况，部分翻译了日本专利特开2000-192279，介绍银及其合金的无氰电镀液组分及工艺，镀液比较稳定。
JP-2000 192279, Cyanide-free electroplating bath for silver and silver alloy coating, using fatty sulphurous compounds that are stable for a relatively long time.
因此，研究出合适的无氰镀铜工艺来取代氰化镀铜工艺一直是广大电镀工作者的目标。
So, to find a non-cyanide alkaline copper plating bath is a great target of the plating operator.
研究了脉冲电镀在微氰镀金，无氰镀金体系中脉冲频率、脉冲占空比对镀金层耐磨性的影响。
The effect of pulse frequency and pulse duration ratio on the abrasion resistance of gold coatings is investigated with pulse plating in cyanide free and trace cyanide baths.
研究了脉冲电镀在微氰镀金，无氰镀金体系中脉冲频率、脉冲占空比对镀金层耐磨性的影响。
The effect of pulse frequency and pulse duration ratio on the abrasion resistance of gold coatings is investigated with pulse plating in cyanide free and trace cyanide baths.
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