Journal
SURFACE & COATINGS TECHNOLOGY
Volume 205, Issue 21-22, Pages 5141-5146Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2011.05.019
Keywords
Electroplating; Organic solvent; Aluminide; Intermetallics; Diffusion
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TiAl3 coating was formed on TiAl alloy by Al electrodeposition from a dimethylsulfone (DMSO2) bath and subsequent annealing. Before the Al electrodeposition, anodic dissolution of TiAl substrate in the DMSO2 bath was conducted to remove the surface oxide layer of the TiAl substrate. By performing the Al electrodeposition immediately after the anodic dissolution, uniform Al films adherent to the TiAl substrate could be obtained. Annealing at 650-1000 degrees C yielded a single TiAl3 layer or two layers of TiAl3 and TiAl2 on the TiAl substrate. The resulted TiAl3 layer was confirmed to show oxidation-resistance at high temperatures. (C) 2011 Elsevier B.V. All rights reserved.
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