Oxidation Behavior of Al8Co17Cr17Cu8Fe17Ni33, Al23Co15Cr23Cu8Fe15Ni15, and Al17Co17Cr17Cu17Fe17Ni17 Compositionally Complex Alloys (High-Entropy Alloys) at Elevated Temperatures in Air
作者： Haneen M. Daoud , Anna M. Manzoni , Rainer Völkl , Nelia Wanderka , Uwe Glatzel
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摘要: Oxidation behavior of the compositionally complex alloys (high-entropy alloys) Al8Co17Cr17Cu8Fe17Ni33 (fcc-alloy), Al23Co15Cr23Cu8Fe15Ni15 (bcc-alloy), and Al17Co17Cr17Cu17Fe17Ni17 (reference-alloy) at elevated temperatures in air is investigated. The microstructures oxide scales substrates are analyzed using scanning electron microscopy X-ray diffraction. All oxidized follow a parabolic kinetic law with low mass change per surface area 800 °C. Al8Cr17Co17Cu8Fe17Ni33 alloy follows sub-parabolic 1 000 °C exhibits good oxidation resistance both tested (800 1 000 °C). Two alloys, suffer from strong spallation 1 000 °C.
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