The effect of Y2O3 addition on thermal shock behavior of magnesium aluminate spinel-Reference-Cited by-同舟云学术

The effect of Y2O3 addition on thermal shock behavior of magnesium aluminate spinel

Published:2009 Issue:1 Volume:41 Page:75-81
ISSN:0350-820X
Container-title:Science of Sintering
language:en
Short-container-title:SCI SINTER

Author:

Posarac Milica¹,Devecerski A.¹,Volkov-Husovic T.²^ORCID,Matovic B.¹,Minic D.M.³

Affiliation:

1. Institute of Nuclear Science 'Vinca', Materials Science Laboratory, Belgrade

2. Faculty of Technology and Metallurgy, Belgrade

3. Faculty of Physical Chemistry, Belgrade

Abstract

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.

Publisher

National Library of Serbia

Subject

Materials Chemistry,Metals and Alloys,Condensed Matter Physics,Ceramics and Composites

Reference9 articles.

1. Thermochemical stability of spinel (MgO·Al2O3) under strong reducing conditions

2. Effect of additives on the densification of reaction sintered and presynthesised spinels

3. Reaction sintering of different spinel compositions in the presence of Y2O3

4. Determination of thermal shock resistance in refractory materials by ultrasonic pulse velocity measurement

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