In Situ Synthesis and Oxidation Behavior of Ti-Al-Ag Ternary Coatings

Lei Yang; Hua Li; He Zhou Liu; Yang Yang Zhang

doi:10.4028/www.scientific.net/MSF.849.702

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HomeMaterials Science ForumMaterials Science Forum Vol. 849In Situ Synthesis and Oxidation Behavior of...

In Situ Synthesis and Oxidation Behavior of Ti-Al-Ag Ternary Coatings

Abstract:

Mixture powders with different ratio of Ag/γ-TiAl were deposited on titanium alloy by low presure plasma spray and thermal treatment was applied to convert the mixture coatings into Ti-Al-Ag ternary ones. The experimental results indicated that the oxidation resistance of ternary coatings was better than sheer γ-TiAl coating and increased with increasing Ag from 2at.% to 4at.% at 700 and 800°C. The outside oxide scale consisted of alumina and a small amount of rutile due to the insufficient diffusion of Ag in γ-TiAl.

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Periodical:

Materials Science Forum (Volume 849)

Pages:

702-708

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.849.702

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Online since:

March 2016

Authors:

Lei Yang, Hua Li*, He Zhou Liu, Yang Yang Zhang

Keywords:

Ag, Low Pressure Plasma Spray, Oxidation, Thermal Treatment, γ-TiAl

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