Fabrication of MgO/Graphene Composites by Combustion Synthesis and Spark Plasma Sintering

Fabrication of MgO/Graphene Composites by Combustion Synthesis and Spark Plasma Sintering
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燃烧合成和火花等离子烧结制备MgO/石墨烯复合材料

DOI:
10.4028/www.scientific.net/ssp.281.125
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发表时间:
2018-08
期刊:
Solid State Phenomena
影响因子:
--
通讯作者:
Jiang Tao Li
Jiang Tao Li
中科院分区:
其他
文献类型:
--
作者:
Nan Lu;Jia Xi Liu;Gang He;Jiang Tao Li

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采用燃烧合成与放电等离子烧结相结合的方法制备了 MgO/石墨烯陶瓷复合材料。通过镁粉与CO2气体的燃烧反应制备了MgO/石墨烯混合粉末。使用LiF作为烧结添加剂,通过放电等离子烧结(SPS)制备致密MgO/石墨烯复合材料。讨论了烧结温度对所制备的MgO/石墨烯陶瓷微观结构和力学性能的影响。 MgO/石墨烯混合物粉末的烧结温度从900℃提高到1300℃。在1100℃时得到的最高密度为3.43g/cm3,硬度为2133MPa。与整体式MgO陶瓷相比,相同烧结温度下MgO/石墨烯陶瓷的硬度由840MPa提高到2133MPa。
MgO/Graphene ceramic composites were fabricated by combining combustion synthesis with spark plasma sintering. MgO/Graphene mixture powders were prepared by the combustion reaction between Mg powders and CO2 gas. Dense MgO/Graphene composites were fabricated by spark plasma sintering (SPS) using LiF as the sintering additive. The effect of the sintering temperature on microstructure and mechanical properties of the prepared MgO/Graphene ceramics was discussed. The sintering temperature of the MgO/Graphene mixture powders increased from 900°C to 1300°C. The highest density of 3.43g/cm3 and hardness of 2133MPa were obtained at 1100°C. Compared with monolithic MgO ceramics, the hardness of MgO/Graphene ceramics at the same sintering temperature was increased from 840MPa to 2133MPa.
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