Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中國有色金屬學報

ZHONGGUO YOUSEJINSHU XUEBAO

第18卷    第6期    總第111期    2008年6月

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文章編號:1004-0609(2008)06-1135-08
ZnCl2-EMIC離子液體中電沉積鋅
馬軍德,李 冰,顏靈光,陳 彥

(華東理工大學 資源與環(huán)境工程學院,上海 200237)

摘 要:

采用ZnCl2-EMIC離子液體,用電化學方法對體系在鎳電極和鎢電極上的反應陰極過程進行研究,分析鋅沉積機制,并用直流和脈沖電源進行電沉積實驗,研究電流密度、溫度和脈沖參數(shù)等因素對鍍層的影響。結(jié)果表明:陰極反應為準可逆反應,鋅離子在鎳電極和鎢電極上形核是三維瞬時形核半球形擴散長大過程,直流電流密度為4mA/cm2,溫度為80 ℃時,鍍層質(zhì)量最好;脈沖電沉積得到的鍍層要優(yōu)于直流電沉積得到的鍍層,尤其在脈沖寬度為2ms,脈沖間隔為8ms,電流密度為8mA/cm2時,得到的鍍層光滑而均勻,顆粒大小接近0.3μm 。

 

關(guān)鍵字: Zn;ZnCl2;離子液體;電沉積

Electrodeposition of zinc from zinc chloride-1-ethyl-3-methylimidazolium chloride molten salt
MA Jun-de, LI Bing, YAN Ling-guang, CHEN Yan

School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China

Abstract:The electrodeposition of zinc from zinc chloride-1-ethyl-3-methylimidazolium chloride molten salt was adopt to study the process of the cathode reaction. The electrodeposition was carried out with direct current and impulse current. The factors influencing the coating were studied. The result indicate that: the electrodeposition of zinc on nickel and tungsten substrates involves instantaneous three-dimensional nucleation. The coating is the best when the current density is 4mA/cm2 and the temperature is 80 ℃. The coating by the method of the impulse electrodeposition is better than the direct current electrodeposition. Especially when f is 100Hz, ton/toff is 2/8 and J is 8mA/cm2, the coating is clean and uniformity. The crystal size is nearly 0.3μ m .

 

Key words: Zn; ZnCl2; ionic liquids; electrodeposition;

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中國科學技術(shù)協(xié)會 主辦:中國有色金屬學會 承辦:中南大學
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