Direct Observation of the Crystallization of Li2O-Al2O3-SiO2 Glasses Containing TiO2 |
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| Authors: | P. E. DOHERTY D. W. LEE R. S. DAVIS |
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| Affiliation: | Arthur D. Little, Incorporated, Cambridge, Massachusetts 02140 |
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| Abstract: | The nucleation and crystallization of Li2O-Al2O3-SiO2 glasses containing TiO2 were investigated using transmission electron microscopy of thin sections produced from bulk samples. Phase separation occurs during cooling from the melt, and on heating, a large number of titanium-aluminum crystals approximately 50 A in diameter are formed. These crystals are the heterogeneous nuclei for the crystallization of the remaining glass. Photomicrographs of various stages of crystallization show the development of the fine-grained glass-ceramic. |
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