期刊
SCIENCE OF SINTERING
卷 41, 期 1, 页码 75-81出版社
INT INST SCIENCE SINTERING (I I S S)
DOI: 10.2298/SOS0901075P
关键词
Spinel; Yttria; Additive; Thermal shock
资金
- Ministry of Science and Environment of Serbia [OI 142016]
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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