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Nanocrystalline, Enamel and Composite Coatings for Superalloys

Nanocrystalline, Enamel and Composite Coatings for Superalloys

Shenglong Zhu, Fuhui Wang
Copyright: © 2018 |Pages: 27
ISBN13: 9781522541943|ISBN10: 1522541942|EISBN13: 9781522541950
DOI: 10.4018/978-1-5225-4194-3.ch007
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MLA

Zhu, Shenglong, and Fuhui Wang. "Nanocrystalline, Enamel and Composite Coatings for Superalloys." Production, Properties, and Applications of High Temperature Coatings, edited by Amir Hossein Pakseresht, IGI Global, 2018, pp. 160-186. https://doi.org/10.4018/978-1-5225-4194-3.ch007

APA

Zhu, S. & Wang, F. (2018). Nanocrystalline, Enamel and Composite Coatings for Superalloys. In A. Pakseresht (Ed.), Production, Properties, and Applications of High Temperature Coatings (pp. 160-186). IGI Global. https://doi.org/10.4018/978-1-5225-4194-3.ch007

Chicago

Zhu, Shenglong, and Fuhui Wang. "Nanocrystalline, Enamel and Composite Coatings for Superalloys." In Production, Properties, and Applications of High Temperature Coatings, edited by Amir Hossein Pakseresht, 160-186. Hershey, PA: IGI Global, 2018. https://doi.org/10.4018/978-1-5225-4194-3.ch007

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Abstract

This chapter describes several innovations for improving the performance of high-temperature coatings. Nanocrystallization has been demonstrated to be a practical way to prolong the lifetime of high temperature coatings by decreasing the minimum Al concentration for sustaining the growth of thermally grown oxide (TGO) scales, and increasing the resistance against scale cracks and spallation. Enamel coatings with enhanced strength, toughness and thermophysical properties were developed for improving the hot corrosion resistance of superalloys. Low expansion nanocomposite coatings minimize the mismatch between coefficients of thermal expansion (CTEs) of the TGO scales and the underlying coatings, so allow growth of thicker TGO scales free of cracks and spallation and then prolong the lifetime.

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