Effect of Al and Zr alloying on the oxidation behaviors of Cr in high temperature oxygen environment

被引：0

作者：

Zhang, Ke ^{[1
]}

Xie, Jun ^{[1
]}

Liu, Jinhua ^{[1
]}

Yao, Bing ^{[1
]}

Zhu, Chaowen ^{[1
]}

Guo, Haibing ^{[1
]}

Zhou, Xiaosong ^{[1
]}

Bing, Wenzeng ^{[1
]}

Han, Xiaochun ^{[1
]}

机构：

[1] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1010卷

关键词：

High temperature oxidation; Alloy block; Al concentration; Zr concentration; COATINGS; COMPOSITE; WATER;

D O I：

10.1016/j.jallcom.2024.177768

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of CrAl and CrAlZr alloy blocks with different Cr/Al ratios were prepared by powder metallurgy method. The alloys were oxidized at 800 degrees C for 30 hours. Results showed that a compact oxide layer was formed on the surface of CrAl alloy, showing good oxidation resistance. However, the introduction of Zr act as a fast diffusion path for oxygen, where the underlying alloy was oxidized seriously. The experiment has demonstrated that the formation of ZrO2 undermines the completeness of the compact Cr2O3 and Al2O3 oxide layer, which is the dominate factor for the failure of the CrAl alloy.

引用

页数：13

共 34 条

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