AUTHOR=Fang Yuqing , Shu Xiaoyong , Dong Shuhe 

TITLE=High Temperature Oxidation Behavior of Nano-Alumina–Modified NiAl Coating

JOURNAL=Frontiers in Materials

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2022.934215

DOI=10.3389/fmats.2022.934215

ISSN=2296-8016

ABSTRACT=<p>In this article, the nickel aluminide coating prepared by the chemical vapor deposition method has adhered deliberately with nano-alumina film on the surface by the electrophoresis method. The analysis results of oxidation behavior in the air at 1,000°C reported that the nano-alumina particles adhering to the nickel aluminide coating surface appear to be effective in facilitating the θ-Al<sub>2</sub>O<sub>3</sub> to α-Al<sub>2</sub>O<sub>3</sub> phase transformation. The fast θ to α phase transformation helps reduce the oxidation rate of the nickel–aluminum coating and prevents the cracking and peeling in the oxide scale. The research addressed a novel method to improve the high-temperature oxidation resistance of nickel aluminide coatings.</p>