Journal of the Ceramic Society of Japan
Online ISSN : 1882-1022
Print ISSN : 0914-5400
ISSN-L : 0914-5400
Technical reports
Effect of ZrO2 Addition on Vickers Hardness of Modified Basalt Glass-Ceramics
Fatma Hassan MARGHASalwa Abdel-Hameed Mohamed ABDEL-HAMEEDShigeru KATOShigeo SATOKAWAToshinori KOJIMA
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2007 Volume 115 Issue 1343 Pages 429-433

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Abstract

Improvement of mechanical properties of cordierite glass-ceramics using modified Egyptian basalt rocks by addition of different amounts of zirconia (ZrO2) was investigated. Crystallization behavior of modified basalt glass was studied by X-ray diffraction (XRD) and scanning electron microscope (SEM). The Vickers hardness of glass-ceramics containing different amounts of ZrO2 and formed at 1050°C for various heat-treatment time was compared. Toughness of the glass-ceramics increased with increasing the amount of transformable ZrO2, which process is probably caused by crack deflection due to the high stress field around transformed ZrO2.

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© 2007 The Ceramic Society of Japan
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