| 电流密度对5,5-二甲基乙内酰脲体系电镀银的影响 |
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| 引用本文： | 张骐,张安琴,骆晨,詹中伟,孙志华,汤智慧,宇波.电流密度对5,5-二甲基乙内酰脲体系电镀银的影响[J].电镀与涂饰,2021,40(3):183-186. |
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| 作者姓名： | 张骐 张安琴 骆晨 詹中伟 孙志华 汤智慧 宇波 |
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| 作者单位： | 北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室,北京 100095;中国航发贵阳发动机设计研究所,贵州 贵阳 550081;北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室,北京 100095;北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室,北京 100095;北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室,北京 100095;北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室,北京 100095;北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室,北京 100095 |
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| 摘 要： | 采用5,5-二甲基乙内酰脲体系在黄铜及不锈钢基体上沉积厚度为6μm左右的银镀层,镀液组成和工艺条件为:硝酸银25 g/L,5,5-二甲基乙内酰脲80 g/L,烟酰胺60 g/L,碳酸钾40 g/L,复合光亮剂(包含2-巯基苯骈噻唑、1,4-丁炔二醇和十二烷基硫酸钠)2 mL/L,pH 10.5,温度60°C,电流密度0...
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| 关 键 词： | 电镀银 5 5-二甲基乙内酰脲 电流密度 形貌 光泽 结合力 耐蚀性 |
Effect of current density on silver electroplating in 5,5-dimethylhydantoin bath |
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| ZHANG Qi,ZHANG Anqin,LUO Chen,ZHAN Zhongwei,SUN Zhihua,TANG Zhihui,YU Bo.Effect of current density on silver electroplating in 5,5-dimethylhydantoin bath[J].Electroplating & Finishing,2021,40(3):183-186. |
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| Authors: | ZHANG Qi ZHANG Anqin LUO Chen ZHAN Zhongwei SUN Zhihua TANG Zhihui YU Bo |
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| Affiliation: | (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;AECC Guiyang Engine Design Research Institute,Guiyang 550081,China) |
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| Abstract: | Silver coatings with a thickness of ca.6μm were electroplated on brass and stainless steel in a bath comprising25 g/L AgNO3,80 g/L 5,5-dimethylhydantoin,60 g/L nicotinamide,40 g/L potassium carbonate,and 2 mL/L composite brightener(containing 2-mercaptobenzothiazole,1,4-butaneol,and sodium dodecyl sulfate)at pH 10.5,temperature 60℃,and current density 0.1-1.2 A/dm2.The effect of current density on the appearance,gloss,surface morphology,and corrosion resistance of silver coating on brass,as well as the adhesion of silver coating on stainless steel was studied.The results showed that current density greatly affects the appearance and microscopic morphology of silver coating,while has little impact on the corrosion resistance and adhesion of silver coating.The silver coating electroplated within the current density range from 0.6 A/dm2 to 1.0 A/dm2 was uniform and bright,and had a compact crystalline structure. |
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| Keywords: | silver electroplating 5 5-dimethylhydantoin current density morphology gloss adhesion corrosion resistance |
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