Effect of Y2O3 doping on the high-temperature properties of magnesia aluminate spinel refractories

被引：11

作者：

Liu, Jiangbo ^{[1
]}

Wang, Zhoufu ^{[1
]}

Liu, Hao ^{[1
]}

Wang, Xitang ^{[1
]}

Ma, Yan ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China

来源：

JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY | 2020年 / 56卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Magnesium aluminate spinel; Y2O3; YAG; High-temperature resistance; IN-SITU FORMATION; COMPOSITE REFRACTORIES; MECHANICAL-PROPERTIES; BEHAVIOR; DENSIFICATION; IMPROVEMENTS; ADDITIVES; CERAMICS; CREEP;

D O I：

10.1007/s41779-019-00340-8

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：

A series of low-creep magnesium aluminate spinel refractories doped with 0-3 wt% Y2O3 were prepared by sintering at 1750 degrees C. The physical properties, especially the high-temperature properties of the refractories, were investigated. X-ray diffractometry (XRD) and scanning electron microscopy (SEM) were applied to characterize the phases and microstructure of the refractories. The results indicated that yttrium aluminum garnet (YAG) could be in situ formed with the addition of Y2O3 in the spinel refractories. This stabilized the grain boundary of the spinel. The mechanical properties and high-temperature creep resistance of the spinel refractory could significantly be improved by the addition of Y2O3.

引用

页码：389 / 394

页数：6

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