Electrodeposition of Al-W Alloys in AlCl3-NaCl-KCl Molten Salt Containing WCl4. (30th August 2016)

• Record Type: Journal Article
• Authors: Sato, Kazuki; Matsushima, Hisayoshi; Ueda, Mikito
• Is Part Of: ECS transactions. Volume 75:Number 15(2016)
• Page Start: 305
• Page End: 312
• Publication Date: 2016-08-30
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07515.0305ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : To form Al-W alloys for high temperature oxidation resistance components, molten salt electrolysis was carried out in an AlCl3 -NaCl-KCl melt containing WCl4 at 423 K. The voltammogram showed two cathodic waves at 1.1 V and 0.5 V vs. Al/Al(III), which may correspond to the reduction from W(IV) to W(III) and from W(III) to tungsten metal, respectively. Electrodeposits of Al and W were obtained in the range from -0.05 to 0.4 V and the highest concentration of W in the electrodeposit was 95 at% at 0.4 V. With increasing W content in the alloy, the morphology of the electrodeposits became more powdery and the particle size smaller.