组分调制Ni/Cr多层膜合金化制备Ni-Cr合金覆盖层的耐腐蚀特性

冯旭,费敬银,李倍,张嫚,郭琪琪

Corrosion Performance of Ni-Cr Alloy Coatings Prepared by Alloying Ni/Cr Multilayered Films of Thickness Modulation

Xu FENG,Jingyin FEI,Bei LI,Man ZHANG,Qiqi GUO

表1 镍镀液和铬镀液的组分和工艺参数

Table 1 Compositions of nickle and chromium plating baths and electrodeposition processes

Composition and operating condition Nickel bath Chromium bath CrCl3·6H2O --- 80 g·L-1 CH3COONH4 --- 20 g·L-1 HCOONa --- 35 g·L-1 NH4Cl --- 100 g·L-1 H3BO3 25 g·L-1 50 g·L-1 NiCO3·2Ni(OH)2·4H2O 200 g·L-1 --- CH3SO3H 350 mL·L-1 --- NiCl2·6H2O 30 g·L-1 --- pH 1~2 2~4 T 20~30 ℃ 20~30 ℃ Iav 4~10 A·dm-2 5~10 A·dm-2 Anode Nickel DSA