Seeding effects on crystallization temperatures of cordierite glass powder
The role of solid state epitaxy in the crystallization of nanocomposite cordierite glass to glass ceramic was investigated. The use of isostructural (α-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 unseededα-cordierite glass. The lowering in crystallization temperature byα-cordierite seeding can be attributed to the nucleation and epitaxial growth mechanism.
KeywordsPolymer TiO2 Crystallization Solid State Crystallization Temperature
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