(北京有色金屬研究總院， 北京 100088)
摘 要: 對Na2WO4WO3ZnO體系熔鹽鍍鎢工藝進行了詳細(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，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， 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)果證實鍍層與鉬基體間擴散層厚度僅為2.5 μm， 基本不形成擴散層； 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: Na2WO4WO3ZnO熔鹽； 電鍍； 鎢鍍層
（General Research Institute for Nonferrous Metals, Beijing 100088, P.R.China）
Abstract:The tungsten electrodeposition process in Na2WO4WO3ZnO 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. Xray diffraction displays that there are textures in the tungsten coatings.
Key words: Na2WO4WO3ZnO molten salts； electrodeposition； tungsten coating
