Abstract
The glass-forming region of the MgO-ZnO-SiO2 system with small additions of Al2O3 has been explored. Based on it, two alkali-free glass-ceramics nucleated by TiO2 were produced, possessing high thermal expansion coefficient, microhardness and electrical resistivity. Investigation of the properties and microstructure of these glass-ceramics by means of scanning electron microscopy and X-ray diffraction indicates that the proportions of willemite solid solution, enstatite solid solution, andα-cristobalite which were encountered mainly in the glass-ceramics dominates the variation in properties. The mismatch of thermal expansion coefficient between the crystalline phases and the residual glass phase plays an important role in changing the mechanical properties.
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The death of Professor Peter McMillan is sadly recorded.
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Chen, ZX., McMillan, P.W. Microstructure and properties of MgO-ZnO2-SiO2 alkali-free glass-ceramics. J Mater Sci 20, 3428–3438 (1985). https://doi.org/10.1007/BF01113750
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DOI: https://doi.org/10.1007/BF01113750