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Open AccessArticle

Isothermal Oxidation Behavior of Zr-Y Coating on γ-TiAl by Double Glow Plasma Surface Metal Alloying Technique

1
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
2
Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing 211167, China
3
Key Laboratory of Materials Preparation and Protection for Harsh Environment (Nanjing University of Aeronautics and Astronautics), Ministry of Industry and Information Technology, Nanjing 211106, China
*
Author to whom correspondence should be addressed.
Coatings 2018, 8(10), 361; https://doi.org/10.3390/coatings8100361
Received: 23 August 2018 / Revised: 30 September 2018 / Accepted: 4 October 2018 / Published: 12 October 2018
(This article belongs to the Special Issue Advanced Coatings for Corrosion Protection in Extreme Environments)
Oxidation resistance of Zr-Y coating on γ-TiAl alloy prepared by a double-glow plasma surface alloying technique was investigated in static air at 750 °C, 800 °C and 850 °C for 100 h. A pure Zr coating was also prepared for comparison. Addition of Y improved high-temperature oxidation resistance of the alloying coating because of its refining effect and inhibition of cationic diffusion. Oxidation kinetic curves indicated that the high-temperature oxidation resistance of the Zr-Y coating was about eight times higher than that of the bare substrate and about 3 times higher than that of pure Zr coating. View Full-Text
Keywords: Zr-Y coating; double glow plasma; high temperature oxidation; γ-TiAl alloys Zr-Y coating; double glow plasma; high temperature oxidation; γ-TiAl alloys
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MDPI and ACS Style

Ding, F.; Zhang, P.; Wei, D.; Chen, X.; Wang, S.; Wang, Z.; Zhu, Y. Isothermal Oxidation Behavior of Zr-Y Coating on γ-TiAl by Double Glow Plasma Surface Metal Alloying Technique. Coatings 2018, 8, 361.

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