新一代硫酸盐三价铬电镀装饰铬工艺

A New Generation of Trivalent Chromium Plating Technology in Sulfate System

制定了Trich-9289硫酸盐体系三价铬电镀装饰铬的新工艺。该工艺电流效率高,沉积速度达到0.047μm/min-0.077μm/min。镀液性能稳定,操作简单,便于维护。镀层光滑,无裂纹或孔隙,结合力强,厚度可达0.3μm以上,中性盐雾试验72h不变色,恒定湿热试验、冷热冲击试验、人造汗液测试及抗化学品污染测试均合格。

Trich-9289 technology of decorative trivalent chromium plating based on sulfate bath was established.The current efficiency is high and chromium deposition rate reaches 0.047 ～ 0.077 μm/min.The plating bath has advantages of high stability,simple operation,and easy maintenance.The chromium coating is smooth,crack/pore-free,and well-adhered,has a thickness greater than 0.3 μm,does not tarnish after neutral salt spray test for 72 h,and can pass the steady-state damp heat test,cold-heat shock test,artificial sweat test,and chemical contamination test.