( 1. 湖南大學(xué) 化學(xué)化工學(xué)院， 長沙 410082；
2. 廣州杰賽科技股份有限公司， 廣州 510310)
摘 要: 利用電化學(xué)工作站, 探討了不同基材上硫酸銠體系鍍銠的開路電位和極化曲線，并討論研究了不同基材上電沉積銠的電流效率。 同時通過中性鹽霧實驗、 鍍層結(jié)合力測試, 研究和比較了不同基材上銠鍍層的性能。結(jié)果表明： 不同的電鍍基材在硫酸銠體系中對其陰極極化的影響不明顯； 以鎳為基材鍍銠時， 具有開路電勢低、 電流效率低、 白度高、 結(jié)合力好等特點； 以鈀為基材時，具有開路電勢高、 耐蝕性強等特點； 以銀為基材時， 具有電流效率高、 結(jié)合力好等特點。
關(guān)鍵字: 電鍍基材； 電沉積； 鍍銠； 電流效率； 耐蝕性
YU Gang1
（ 1. College of Chemistry and Chemical Engineering,
Hunan University, Changsha 410082, China;
2. GCI Science and Technology Co Ltd, Guangzhou 510310, China）
Abstract: The effect of different substrate on open circuit potential of rhodium plating and polarization curve was investigated by using electrochemical workstation. And the current efficiency about rhodium plating on different substrate was researched. Various performance tests (neutral salt spray, metallic coating binding force) about rhodium plating on different substrate metal material were also studied. The results show that lower open circuit potential and current efficiency, higher whiteness, better coating binding force were found when the substrate was nickel; when palladium as the substate, higher open circuit potential and stronger corrosion resistance were found. And higher current efficiency and better coating binding force were shown with silver substrate.
Key words: plating substrate; electrodeposit; rhodium plating; current efficiency; corrosion resistance
