caa a22 4500 463189426 CHVBK 20180406164904.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10973-006-7795-8 doi (NATIONALLICENCE)springer-10.1007/s10973-006-7795-8 Crystallization of spodumene-diopside in the las glass ceramics with CaO and MgO addition [Elektronische Daten] [A. Hu, M. Li, D. Mao] Crystallization, morphology and mechanical properties of a spodumene-diopside glass ceramics with adding different amount of CaO and MgO in Li2O-Al2O3-2SiO2 were investigated. With CaO and MgO addition, the crystallization temperature (T p) decreased, the value of Avrami constant (n) decreased from 3.2±0.3 to 1.4±0.2, the activation energy (E) increased from 299±3 kJ mol−1 to 537±5 kJ mol−1. The crystalline phases precipitated were h-quartz solid solution, β-spodumene and diopside. The mechanism of crystallization of the glass ceramics changed from bulk crystallization to surface crystallization. The grain sizes and thermal expansion coefficients increased while flexural strength and fracture toughness of the glass-ceramics increased first, and then decreased. The mechanical properties were correlated with crystallization and morphology of glass ceramics. Springer Science+Business Media, LLC., 2007 crystallization nationallicence glass nationallicence glass-ceramics nationallicence grain growth nationallicence mechanical properties nationallicence Hu A. School of Materials Science and Engineering, The State Key Laboratory of the Metal Matrix Composites, Shanghai Jiaotong University, 1954 Huashan Road, Shanghai, 200030, P. R. China aut Li M. School of Materials Science and Engineering, The State Key Laboratory of the Metal Matrix Composites, Shanghai Jiaotong University, 1954 Huashan Road, Shanghai, 200030, P. R. China aut Mao D. School of Materials Science and Engineering, The State Key Laboratory of the Metal Matrix Composites, Shanghai Jiaotong University, 1954 Huashan Road, Shanghai, 200030, P. R. China aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/1(2007-10-01), 185-189 1388-6150 90:1<185 2007 90 10973 https://doi.org/10.1007/s10973-006-7795-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7795-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hu A. School of Materials Science and Engineering, The State Key Laboratory of the Metal Matrix Composites, Shanghai Jiaotong University, 1954 Huashan Road, Shanghai, 200030, P. R. China aut NATIONALLICENCE 700 1- Li M. School of Materials Science and Engineering, The State Key Laboratory of the Metal Matrix Composites, Shanghai Jiaotong University, 1954 Huashan Road, Shanghai, 200030, P. R. China aut NATIONALLICENCE 700 1- Mao D. School of Materials Science and Engineering, The State Key Laboratory of the Metal Matrix Composites, Shanghai Jiaotong University, 1954 Huashan Road, Shanghai, 200030, P. R. China aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/1(2007-10-01), 185-189 1388-6150 90:1<185 2007 90 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer