日期:2012-04-06 17:23
酸，40.0g/L硼酸，40.0g/L硫酸钠，0.02~0.04g/L十二烷基硫酸钠；温度25℃，pH值3.0,Jc=15A/dm2,阳极为钛基涂层DSA,阴极为紫铜片，阴阳极面积比1∶2.常温施镀即可得到外观光亮、结合力优良的铬镀层，耐蚀性与六价铬镀层相当，而且沉积速率高，分散能力和覆盖能力与国外工艺相当。快速镀铬和镀厚铬工艺：0.5mol/LCr3+,0.7mol/LHCOOH,60~80g/LH3BO3,144g/LNa2SO4,50g/LK2SO4,1.0mol/L湿润剂，pH值2.5.1.2.3 草酸盐-乙二胺四乙酸二钠镀液现有工艺体系：180~220g/LCr2（SO4）3・6H2O,50~90g/LNa2C2O4,25~30g/LEDTA,30~35g/LH3BO3,90~110g/LNa2S