Oxidation resistance of AlCoFeNiCux high entropy alloys

被引：7

作者：

Palcut, Marian ^{[1
]}

Drienovsky, Marian ^{[1
]}

Priputen, Pavol ^{[1
,2
]}

Sulhanek, Patrik ^{[1
]}

Stacho, Peter ^{[1
]}

Gerhatova, Zaneta ^{[1
]}

Gogola, Peter ^{[1
]}

Krajcovic, Jozef ^{[1
]}

Bonova, Lucia ^{[2
]}

Kusy, Martin ^{[1
]}

机构：

[1] Slovak Univ Technol, Fac Mat Sci & Technol, Inst Mat Sci, Jana Bottu 25, Trnava 91724, Slovakia

[2] Slovak Univ Technol, Fac Mat Sci & Technol, Adv Technol Res Inst ATRI, Jana Bottu 25, Trnava 91724, Slovakia

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 31卷

关键词：

High entropy alloy; SEM; XRD; Oxidation; Passive film; HIGH-TEMPERATURE OXIDATION; VALENCE ELECTRON-CONCENTRATION; MECHANICAL-PROPERTIES; THERMAL-EXPANSION; AL; BEHAVIOR; COPPER; SURFACE; DESIGN; SCALES;

D O I：

10.1016/j.jmrt.2024.06.185

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation behavior of as-cast AlCoFeNiCux (x = 0.6-3.0) high entropy alloys was studied by isothermal annealing in flowing synthetic air at 1000 degrees C. A formation of an external protective Al2O3 scale has been found. The oxidation kinetics followed a parabolic rate law. The rate constants were increasing with increasing Cu concentration in the alloys. A scale spallation on the alloys with higher Cu concentration was observed. The spallation facilitated a penetration of oxygen through the scale and promoted the formation of CuO and CuAl2O4. The oxidation mechanism of the AlCoFeNiCux alloys is discussed and compared with previously studied high entropy alloys.

引用

页码：1974 / 1990

页数：17

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