The Effect of Y2O3 Addition on Thermal Shock Behavior of Magnesium Aluminate Spinel

被引：36
作者：
Posarac, M. [1 ]
Devecerski, A. [1 ]
Volkov-Husovic, T. [2 ]
Matovic, B. [1 ]
Minic, D. M. [3 ]
机构：
[1] Inst Nucl Sci Vinca, Mat Sci Lab, Belgrade, Serbia
[2] Univ Belgrade, Fac Technol & Met, Belgrade 11000, Serbia
[3] Univ Belgrade, Fac Phys Chem, Belgrade, Serbia
来源：
SCIENCE OF SINTERING | 2009年 / 41卷 / 01期
关键词：
Spinel; Yttria; Additive; Thermal shock; MGAL2O4; SPINEL; COMPOSITES; RESISTANCE;
D O I：
10.2298/SOS0901075P
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：
The effect of yttria additive on the thermal shock behavior of magnesium aluminate spinel has been investigated. As a starting material we used spinel (MgAl2O4)obtained by the modified glycine nitrate procedure (MGNP). Sintered products were characterized in terms Of phase analysis, densities, thermal shock, monitoring the damaged surface area in the refractory specimen during thermal shock and ultrasonic determination of the Dynamic Young modulus of elasticity. It was found that a new phase between yttria and alumina is formed, which improved thermal shock properties of the spinel refractories. Also densification of samples is enhanced by yttria addition.
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页码：75 / 81
页数：7
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