A Heat-Resistant NiCo_{0.6}Fe_{0.2}Cr_{1.5}SiAlTi_{0.2}Overlay Coating for High-Temperature Applications

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

doi:10.1149/2.0821613jes

journal article·2016

A Heat-Resistant NiCo_0.6Fe_0.2Cr_1.5SiAlTi_0.2Overlay Coating for High-Temperature Applications

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

Journal of The Electrochemical Society· Volume 163· Issue 13

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Source abstract

Abstract

This paper proposes an overlay coating based on the high-entropy alloy composition NiCo 0.6 Fe 0.2 Cr 1.5 SiAlTi 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-Al 2 O 3 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.

Source: openalex_inverted_index · Quality: baseline

Research context

Metals & alloys Ceramics & glasses

OpenAlex topics: High-Temperature Coating Behaviors · High Entropy Alloys Studies · Advanced materials and composites

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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