Effect of ZrO2 Addition on Vickers Hardness of Modified Basalt Glass-Ceramics

Fatma Hassan MARGHA; Salwa Abdel-Hameed Mohamed ABDEL-HAMEED; Shigeru KATO; Shigeo SATOKAWA; Toshinori KOJIMA

doi:10.2109/jcersj.115.429

テクニカルレポート

Effect of ZrO₂ Addition on Vickers Hardness of Modified Basalt Glass-Ceramics

Fatma Hassan MARGHA, Salwa Abdel-Hameed Mohamed ABDEL-HAMEED, Shigeru KATO, Shigeo SATOKAWA, Toshinori KOJIMA

著者情報

キーワード: Glass-ceramics, ZrO₂, Cordierite, Basalt, Vickers hardness

ジャーナルフリー

2007 年 115 巻 1343 号 p. 429-433

DOI https://doi.org/10.2109/jcersj.115.429

詳細

抄録

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.

責任著者(Corresponding author)

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