Enhanced properties of MgO-Al2O3 composite materials with Al powder addition under 1300 °C creep test and its mechanism analysis

被引：1

作者：

Jiang, Peng ^{[1
]}

Ma, Jiajia ^{[1
]}

Li, Yong ^{[1
]}

Yue, Dandan ^{[1
]}

Tong, Shanghao ^{[1
]}

Xue, Wendong ^{[1
]}

机构：

[1] Univ Sci & Technol, Sch Mat Sci & Engn, 30 Xueyuan Rd, Beijing 100083, Beijing, Peoples R China

来源：

SOLID STATE SCIENCES | 2017年 / 66卷

关键词：

Aluminum; Aluminum nitride; Creep performance; Al2O (g); THERMODYNAMICS;

D O I：

10.1016/j.solidstatesciences.2016.12.008

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The Al-MgO-Al2O3 composite samples were prepared with alumina (fused corundum and sintered alumina), high purity sintered magnesia and aluminum powder. Creep test was carried out at 1300 degrees C and studied. The results show that the creep rate of sample without aluminum addition decreases gradually. The creep properties of the MgO-Al2O3 composite material are improved by aluminum powder addition, with the sample demonstrating, an increase creep rate. The physical properties of the samples are enhanced by aluminum powder addition as well. The mechanism of the improvement on the sample is analyzed by different characterization methods and kinetics calculations. Our results indicates that the AIN and MgAl2O4 spinel phases which are formed during the creep test are acting as the reinforcing phases and therefore enhance the creep performance of the samples. (C) 2016 Published by Elsevier Masson SAS.

引用

页码：38 / 43

页数：6

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