摘要
采用亚氨基二琥珀酸四钠(IDS)替代亚氨基二磺酸铵(NS)作为配位剂在不锈钢表面电镀银。镀液组成和工艺条件为:AgNO_(3)35 g/L,35%(质量分数)IDS 750 g/L,(NH_(4))_(2)SO_(4)120 g/L,KOH适量,pH 8.5,温度(25±5)℃,电流密度0.3~0.5 A/dm^(2)。对比分别采用IDS和NS时镀层的外观、光泽、微观形貌和结合力。结果表明,使用IDS时所得银镀层外观更佳,结晶细致,结合力良好。
Tetrasodium iminidisuccinate(IDS)was used instead of diammonium imidodisulfate(NS)as a complexing agent for silver electroplating on stainless steel.The bath composition and process conditions are:AgNO_(3)35 g/L,IDS(mass fraction 35%)750 g/L,(NH_(4))_(2)SO_(4)120 g/L,KOH as required,pH 8.5,temperature(25±5)℃,current density 0.3-0.5 A/dm^(2).The appearance,gloss,microstructure,and adhesion of the silver coatings electrodeposited from the electrolyte containing IDS and NS respectively were compared.The results showed that the silver coating electrodeposited with IDS as complexing agent features better appearance,fine and compact crystal structure,and strong adhesion to substrate.
作者
张骐
董春蕾
詹中伟
孙志华
宇波
于洋
ZHANG Qi;DONG Chunlei;ZHAN Zhongwei;SUN Zhihua;YU Bo;YU Yang(Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Materials,Beijing Institute of Aeronautical Materials,Surface Engineering Institution,Beijing 100095,China;AVIC Shenyang Aircraft Design&Research Institute,Shenyang 110035,China)
出处
《电镀与涂饰》
CAS
北大核心
2021年第23期1758-1761,共4页
Electroplating & Finishing
关键词
无氰电镀银
亚氨基二琥珀酸四钠
亚氨基二磺酸铵
配位剂
光泽
结合力
cyanide-free silver electroplating
tetrasodium iminidisuccinate
diammonium imidodisulfate
complexing agent
gloss
adhesion
