Seeding effects on crystallization temperatures of cordierite glass powder |
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Authors: | U Selvaraj S Komarneni R Roy |
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Affiliation: | (1) Materials Research Laboratory, Pennsylvania State University, 16802 University Park, Pennsylvania, USA |
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Abstract: | The role of solid state epitaxy in the crystallization of nanocomposite cordierite glass to glass ceramic was investigated. The use of isostructural ( -cordierite) seeds in cordierite glass led to a lowering in the crystallization temperature to form glass ceramic by about 50 °C compared to the unseeded glass. The use of non-isostructural seeds such as ZrO2 and TiO2 did not lower the crystallization temperature of cordierite glass to glass ceramic, and in the case of the TiO2-seeded glass the crystallization temperature increased by about 50 °C compared to the unseeded -cordierite glass. The lowering in crystallization temperature by -cordierite seeding can be attributed to the nucleation and epitaxial growth mechanism. |
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