Browsing by Author "El-Shennawe, Ahmed W. A."

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    Crystallization of osumilite from modified basaltic glasses
    (Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 2003) El-Shennawe, Ahmed W. A.; Abdel-Hameed, Salwa A. M.
    Osumilite-type phases, which have high temperature stability and low linear thermal expansion coefficients, were crystallized from modified basalt glass composition. To satisfy the compositional requirements of osumilite molecules, a deliberate amount of kaolin, sand, magnesite and TiO2 should be added to the basalt. The crystallization process was investigated by DTA, X-ray diffractometry and SEM. The effect of compositional changes on bulk crystallization and growth morphology was also studied. The linear thermal expansion coefficient was measured to characterize the produced glass-ceramics.