Ni-xCr-ySc(x=5,15,25,35;y=0,1)合金的高温抗氧化性能

doi:10.11896/cldb.21040192

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Abstract The Ni-Cr-Sc alloys were prepared by powder metallurgy technology and the effects of Sc for the alloys with different content Cr on the oxidation resistance were studied at 1 000 ℃. The results show that: for Ni-xCr-ySc(x=5,15,25,35;y=0,1;mass fraction,the same below) alloys, the addition of Sc element increases the area of oxide scales/substrate,and the oxide scales penetrates deep into the substrate,the both improves the bonding force between the oxide scales and the substrate.The Sc element can promote the formation of Cr₂O₃ and NiCr₂O₄,provide the nucleation particles of oxide scales which refine the grains ,and protect the integrity of the oxide scales.The element of Sc is beneficial to the formation of NiCr₂O₄ which reduce the oxidation rate,meanwhile the element of Sc increase the grain boundaries as diffusion channels which accelerate the oxidation rate.

Key words： superalloy Sc oxidation performance powder metallurgy

Published: Online: 2022-12-09

CLC number:

TG172.82

Fund:Guangxi Science and Technology Major Project(AA18118030),and High-level Innovation Team Project of Guangxi Colleges(GXYSOF1813).

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	Articles by authors
	XIE Chuanbin
	WU Haoran
	WANG Huicong
	LIU Jingye
	ZHANG Xiuhai

Cite this article:

XIE Chuanbin,WU Haoran,WANG Huicong, et al. High Temperature Oxidation Resistance of Ni-xCr-ySc(x=5,15,25,35;y=0,1) Alloy[J]. Materials Reports, 2022, 36(23): 21040192-5.

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http://www.mater-rep.com/EN/10.11896/cldb.21040192 OR http://www.mater-rep.com/EN/Y2022/V36/I23/21040192

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