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      Fabrication and properties of porous silicon nitride ceramics via microwave sintering

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          Abstract

          Porous silicon nitride ceramics were fabricated without pore formers via microwave sintering. Microwave sintering at different temperatures produced unique microstructures with high porosity. The best porous silicon nitride ceramics were fabricated at 1550°C for 30 min; the resulting product had a bulk density of 1552 g cm −3, an open porosity of 43.9%, and a flexural strength of 43.6 MPa. The mean pore channel size and the dielectric constants of the fabricated porous silicon nitride ceramics ranged from 0.1 μm to 1 μm and 2.9 to 3.4 under different temperatures, respectively.

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          Most cited references 8

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          Densification during Sintering in the Presence of a Liquid Phase. I. Theory

           W. D. Kingery (1959)
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            High-temperature microwave processing of materials

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              Microstructure and Fracture Toughness of Si3N4Ceramics Combined Roles of Grain Morphology and Secondary Phase Chemistry

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                Author and article information

                Journal
                ijmr
                International Journal of Materials Research
                Carl Hanser Verlag
                1862-5282
                2195-8556
                8 December 2014
                : 105
                : 12
                : 1236-1238
                Affiliations
                a School of Material Science and Engineering, University of Jinan, Jinan, China
                b Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, Jinan, China
                Author notes
                [* ] Correspondence address, Dr. Cheng Xin, Professor, School of Material Science and Engineering, University of Jinan, 336, West Rd of Nan Xinzhuang, Jinan, Shandong, 250022, P.R. China, Tel.: +86-531-82767375, E-mail: tougaochengxin@ 123456163.com
                Article
                MK111137
                10.3139/146.111137
                © 2014, Carl Hanser Verlag, München
                Page count
                References: 9, Pages: 3
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                Short Communications

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