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Electrochemical formation of titanium-aluminum alloys from Ti 2 O 3 in-situ chloridized by AlCl 3 in chloride melts

Authors :
Milin Zhang
Bei-Lei Yan
Yuan-Feng Ye
Yongde Yan
Source :
Electrochimica Acta. 188:269-276
Publication Year :
2016
Publisher :
Elsevier BV, 2016.

Abstract

This work presents an electrochemical study of Ti 3+ and Al 3+ in the NaCl-KCl-AlCl 3 -Ti 2 O 3 at 1123K. Transient electrochemical techniques show that Ti 3+ ions are reduced to Ti metal by a two-step mechanism involving the exchanges of one and two electrons. The electrochemical co-reduction of Ti 3+ and Al 3+ in the NaCl-KCl-AlCl 3 -Ti 2 O 3 melts at 1123 K was performed. Cyclic voltammetry and square wave voltammetry were applied using a molybdenum electrode to investigate the reduction behavior of Ti 3+ and Al 3+ and to identify the Ti-Al alloys. A series of redox signals corresponding to different Ti-Al alloys were observed. Potentiostatic electrolysis was conducted using a molybdenum electrode to prepare the Ti-Al alloys. The obtained deposits were characterized by SEM-EDS and XRD. Compounds Layers of TiAl 3 and TiAl 2 were generated via potentiostatic electrolysis.

Details

ISSN :
00134686
Volume :
188
Database :
OpenAIRE
Journal :
Electrochimica Acta
Accession number :
edsair.doi...........018772c154ea963153099f1355241678