Effect of TiO2 on Mechanical Properties and Microstructure of Magnesium Aluminate Spinel Refractories

Abstract:

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MgO-Al2O3-TiO2 composite refractories were prepared by using magnesium aluminate spinel (MgAl2O4) and titanium dioxide as main starting materials and being sintered at high temperature. The influences of titanium dioxide additions on the room temperature physical properties, phase composition and microstructure were investigated. The phase composition and microstructure were tested by means of XRD and SEM. The results revealed that with increasing TiO2 content, the densification of the composites first increased sand then decreased and maximized at 4% TiO2 loading. This showed appropriate amount of TiO2 could contribute to the sintering of the composites due to the solid solution of TiO2 in magnesium aluminate spinel.

Info:

Periodical:

Advanced Materials Research (Volumes 284-286)

Main Theme:

Edited by:

Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu

Pages:

638-641

DOI:

10.4028/www.scientific.net/AMR.284-286.638

Citation:

J. C. Wei et al., "Effect of TiO2 on Mechanical Properties and Microstructure of Magnesium Aluminate Spinel Refractories", Advanced Materials Research, Vols. 284-286, pp. 638-641, 2011

Online since:

July 2011

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$35.00

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