A heat-resistant NiCo0.6Fe0.2Cr1.5SiAlTi0.2 overlay coating for high-temperature applications

Wei Lin Hsu; Hideyuki Murakami; Jien Wei Yeh; An Chou Yeh; Kazuya Shimoda

doi:10.1149/2.0821613jes

A heat-resistant NiCo_0.6Fe_0.2Cr_1.5SiAlTi_0.2 overlay coating for high-temperature applications

Wei Lin Hsu, Hideyuki Murakami, Jien Wei Yeh, An Chou Yeh, Kazuya Shimoda

研究成果: Article › 査読

16 被引用数 (Scopus)

抄録

This paper proposes an overlay coating based on the high-entropy alloy composition NiCo_0.6Fe_0.2Cr_1.5SiAlTi_0.2 [high-entropy alloy coating (HEAC)]. HEAC samples underwent spark-plasma sintering processes and were subjected to oxidation tests, high-temperature hardness tests, and thermal conductivity and thermal expansion measurements. Experimental results indicated that the HEAC can form protective α-Al₂O₃ at 1100°C and exhibits oxidation behavior similar to that of MCrAlY. Furthermore, compared to MCrAlY, the HEAC possesses better thermal stability, higher hot hardness, lower thermal conductivity, and smaller thermal expansion. The potential of the HEAC as an overlay coating for high-temperature applications is discussed.

本文言語	English
ページ（範囲）	C752-C758
ジャーナル	Journal of the Electrochemical Society
巻	163
号	13
DOI	https://doi.org/10.1149/2.0821613jes
出版ステータス	Published - 2016
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
再生可能エネルギー、持続可能性、環境
表面、皮膜および薄膜
電気化学
材料化学

文献へのアクセス

10.1149/2.0821613jes

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引用スタイル

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abstract = "This paper proposes an overlay coating based on the high-entropy alloy composition NiCo0.6Fe0.2Cr1.5SiAlTi0.2 [high-entropy alloy coating (HEAC)]. HEAC samples underwent spark-plasma sintering processes and were subjected to oxidation tests, high-temperature hardness tests, and thermal conductivity and thermal expansion measurements. Experimental results indicated that the HEAC can form protective α-Al2O3 at 1100°C and exhibits oxidation behavior similar to that of MCrAlY. Furthermore, compared to MCrAlY, the HEAC possesses better thermal stability, higher hot hardness, lower thermal conductivity, and smaller thermal expansion. The potential of the HEAC as an overlay coating for high-temperature applications is discussed.",

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AU - Yeh, An Chou

AU - Shimoda, Kazuya

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