Microscopic Investigation of High-Temperature Oxidation of hcp-ZrAl2

被引：2

作者：

Hu, Zhangping ^{[1
]}

Xu, Yifei ^{[1
]}

Ma, Zongqing ^{[1
]}

Li, Chong ^{[1
]}

Huang, Yuan ^{[1
]}

Liu, Yongchang ^{[1
]}

Wang, Zumin ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

来源：

OXIDATION OF METALS | 2020年 / 94卷 / 5-6期

基金：

中国国家自然科学基金;

关键词：

Thermal oxidation; Zr-Al alloys; Multilayer oxide; Oxidation kinetics; BULK METALLIC-GLASS; ELASTIC PROPERTIES; INTERMETALLIC COMPOUNDS; PHASE-TRANSFORMATION; ZR; AL; STABILITY; 1ST-PRINCIPLES; MICROSTRUCTURE; EVOLUTION;

D O I：

10.1007/s11085-020-10000-z

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The high-temperature oxidation of ZrAl(2)upon exposure to pure O(2)at 800-950 degrees C was studied in terms of the oxidation kinetics and the formation mechanism of the oxide layer. The alloy followed parabolic oxidation kinetics, and the activation energy of oxidation was 239 +/- 14 kJ/mol. During the early stages of oxidation below 850 degrees C, a single-layer oxide formed due to the crystallization of the initially formed amorphous oxide layer. A multilayer oxide structure developed at higher temperatures, due to the slightly higher affinity of oxygen for Zr than for Al and the oxidation-induced compositional changes.

引用

页码：431 / 445

页数：15

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