Thermal stability and decomposition mechanism of Mo2AlB2 in argon atmosphere

被引：4

作者：

Mou, Junji ^{[1
]}

Li, Shibo ^{[1
]}

Zhang, Weiwei ^{[1
]}

Fan, Xiachen ^{[1
]}

Zhang, Xuejin ^{[1
]}

机构：

[1] Beijing Jiaotong Univ, Ctr Mat Sci & Engn, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2024年 / 50卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Mo2AlB2; Metastable phase; Thermal stability; Decomposition; OXIDATION BEHAVIOR; TEMPERATURE; MOALB; CR2ALB2; BORIDES; TI3C2;

D O I：

10.1016/j.ceramint.2024.02.364

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Mo2AlB2 is a new and metastable phase in the MAB phase family. The lamellar Mo2AlB2 compound is considered to be an optimal candidate for preparing 2D MoB nanosheets. However, studies have less focused on its thermostability as compared with other MAB phases. In this work, the thermal stability of Mo2AlB2 was studied under Ar atmosphere to understand its limited applications. The results showed that Mo2AlB2 slowly decomposed at above 800 degrees C, but completely decomposed into MoB and Al at 1100 degrees C for only 0.5 h. Based on the experimental results and density functional theory calculations, the decomposition mechanism of Mo2AlB2 phase was analyzed.

引用

页码：18758 / 18764

页数：7

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