Abstract
The variation of the microstructure with heat-treatment of transparent glass-ceramics based on the ZnO-Al2O3-SiO2 system has been investigated using X-ray diffraction and transmission electron microscopy. The principal crystalline phase was found to be ZnAl2O4, gahnite, when a minimum amount of nucleating agent, ZrO2, was present. The dependence of mean particle size, volume fraction and mean crystal spacing on the heat-treatment was also studied. It was found that the microstructural parameters were relatively sensitive to the time at the crystallization temperature of 950° C.
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Stryjak, A.J., McMillan, P.W. Microstructure and properties of transparent glass-ceramics. J Mater Sci 13, 1275–1281 (1978). https://doi.org/10.1007/BF00544734
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DOI: https://doi.org/10.1007/BF00544734