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中國(guó)有色金屬學(xué)報(bào)

ZHONGGUO YOUSEJINSHU XUEBAO

第10卷第5期總第38期 2000年10月

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文章編號(hào)：1004-0609(2000)05-0715-04

Na₂WO₄-WO₃-ZnO體系熔鹽鍍鎢

馬瑞新，周傳華，李國(guó)勛，王超群，孫麗虹

(北京有色金屬研究總院，北京 100088)

摘要: 對(duì)Na₂WO₄WO₃ZnO體系熔鹽鍍鎢工藝進(jìn)行了詳細(xì)研究，得到了獲得金屬鎢鍍層的工藝條件。結(jié)果表明：在空氣氣氛中，當(dāng)氧化鎢的濃度為15%～30%時(shí)，于850～950 ℃能得到金屬鎢鍍層且鍍層表面平整；當(dāng)其它條件都相同時(shí)，在銅基體上獲得鎢鍍層比鉬基體上所需的溫度略高一些；掃描電鏡照片顯示鎢鍍層與鉬基體之間有明顯分界面，元素線掃描結(jié)果證實(shí)鍍層與鉬基體間擴(kuò)散層厚度僅為2.5 μm，基本不形成擴(kuò)散層；不同電流密度下所獲得的鎢鍍層X射線衍射表明鍍層中存在織構(gòu)。

關(guān)鍵字: Na₂WO₄WO₃ZnO熔鹽；電鍍；鎢鍍層

Tungsten electrodeposition in Na₂WO₄WO₃ZnO molten salts

MA Ruixin, ZHOU Chuanhua, LI Guoxun, WANG Chaoqun, SUN Lihong

（General Research Institute for Nonferrous Metals, Beijing 100088, P.R.China）

Abstract:The tungsten electrodeposition process in Na₂WO₄WO₃ZnO molten salts has been approached in details. The optimized conditions for tungsten coatings have been obtained. When the concentration of WO₃ ranges between 15% and 30%(mole fraction) a plain tungsten coating can be achieved in an open air condition at 850～950 ℃.The temperature for tungsten coating on copper substrate is higher than that on molybdenum. SEM shows that there is a distinct interface between tungsten coating and substrate. ELS(element linear sweep) indicates that there is a very thin diffusion layer between tungsten coating and molybdenum substrate. Xray diffraction displays that there are textures in the tungsten coatings.

Key words: Na₂WO₄WO₃ZnO molten salts； electrodeposition； tungsten coating

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

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