日期:2012-04-06 17:23
1.3 氯化物-硫化物体系Cl-+SO2-4工艺：0.4mol/LCrCl3・6H2O,0.2mol/LCr2（SO4）3・6H2O,0.4mol/LNaCl,0.4mol/LH3BO3,2mol/L（NH2）2CO,20mL/LHCOOH,10g/L稳定剂，pH值1.9~2.3,Jc11A/dm2,阳极为石墨。采用此工艺可获得30~40μm镀层。此体系中利用脉冲电沉积得到晶粒尺寸小于100nm,厚度均匀，表面光滑，结晶细致的纳米晶铬镀层，厚度为11.2μm电流效率高达25.32%.1.4 电镀非晶态铬和铬合金采用130g/LCrC13・6H2O,35g/LH3B03,15g/LKBr,83g/L稳定剂，80g/L配位剂，0.06~0.10g/L添加剂Ⅰ，0.2~1.3g/L添加剂Ⅱ，0.06~0.20g/L润湿剂，pH值1.5~3.8