Sintered esseneite–wollastonite–plagioclase glass–ceramics from vitrified waste |
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| Authors: | E Bernardo L Esposito E Rambaldi A Tucci Y Pontikes GN Angelopoulos |
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| Affiliation: | 1. Dipartimento di Ingegneria Meccanica, Settore Materiali, Università di Padova, Via Marzolo 9, 35131 Padova, Italy;2. Centro Ceramico Bologna, Via Martelli 26, 40138 Bologna, Italy;3. Laboratory of Materials and Metallurgy, Department of Chemical Engineering, University of Patras, 26500 Rio, Greece;1. School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, PR China;2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China;1. School of Materials Science and Engineering, Nanchang Hangkong University, 696 Fenghe South Road, Nanchang 330063, PR China;2. Shanghai Shangchuang Superconducting Technology Co., Ltd, 333 Puhui Road, Shanghai 201821, PR China;1. Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PPGCEM), Universidade do Extremo Sul Catarinense (UNESC), Av. Universitária 1105, 88806-000 Criciúma, Brazil;2. Instituto de Engenharia e Tecnologia (IDT-UNESC), Universidade do Extremo Sul Catarinense (UNESC), Av. Universitária 1105, 88806-000 Criciúma, SC, Brazil;1. Eliane Revestimentos Cerâmicos, Rua Maximiliano Gaidzinski, 245, 88845-000 Cocal do Sul, Brazil;2. Instituto Federal Catarinense – Campus Avançado Sombrio, Rua Francisco Caetano Lumertz, 818 – Bairro Januária, 88960-000 Sombrio, Brazil;3. Reactors and Industrial Processes Research Group, Materials Science and Engineering Post-graduate Program, Universidade do Extremo Sul Catarinense, Avenida Universitária, 1105, 88806-000 Criciúma, Brazil |
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| Abstract: | Dense sintered esseneite–wollastonite–plagioclase glass–ceramics have been successfully prepared from a vitrified mixture of important inorganic waste (Bayer process red mud, fly ash from lignite combustion and residues from the polishing of porcelain stoneware tiles). The enhanced nucleation activity of fine glass powders, favoured by particular oxidation conditions, caused a substantial crystallisation, even in the case of very rapid thermal treatments at 900 °C, which led to remarkable mechanical properties (bending strength and Vickers micro-hardness exceeding 130 MPa and 7 GPa, respectively) and a promising chemical durability. |
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