Growth behavior,morphology and properties of lithium aluminosilicate glass ceramics with different amount of CaO,MgO and TiO2 additive |
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| Authors: | AM Hu M LiDL Mao |
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| Affiliation: | The State Key Laboratory of the Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, PR China |
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| Abstract: | Li2O–Al2O3–SiO2 glass with CaO, MgO and TiO2 additive were investigated. With more CaO + MgO addition, the crystallization temperature (Tp) and the value of Avrami constant (n) decreased, the activation energy (E) increased. The mechanism of crystallization of the glass ceramics changed from bulk crystallization to surface crystallization. With more TiO2 addition, the crystallization temperature decreased, E and n had a little change. The crystallization of the glass ceramics changed from surface crystallization to two-dimensional crystallization. Plate-like, high mechanical properties spodumene-diopside glass ceramics were obtained. The mechanical properties related with crystallization and morphology of glass ceramics. |
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| Keywords: | A Grain growth C Mechanical properties D Glass D Glass ceramics Crystallization |
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