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In-situ synthesis and densification of boron carbide and boron carbide-graphene nanoplatelet composite by reactive spark plasma sintering
Ceramics International ( IF 5.2 ) Pub Date : 2018-12-01 , DOI: 10.1016/j.ceramint.2018.08.154
Rajath Alexander , T.S.R. Ch. Murthy , K. Vasanthakumar , N.S. Karthiselva , Srinivasa Rao Bakshi , Kinshuk Dasgupta

Abstract Simultaneous synthesis and densification of boron carbide and boron carbide- graphene nano platelets (GNP) were carried out by reactive spark plasma sintering of amorphous boron and graphene nano platelets at temperature ranging from 1200 to 1600 °C, pressure of 50 MPa and heating rate of 50 °C/min and 100 °C/min. X-ray diffraction and Raman spectroscopy confirmed the formation of required phases. Electron microscopic images revealed the formation of sub-micron and nano sized grains of plate like morphology. Sintered product with high relative density of 96%TD was achieved at a temperature of 1600 °C and heating rate of 50 °C/min for B4C stoichiometric composition and also exhibited maximum hardness of 21.10 GPa.

中文翻译:

反应放电等离子体烧结原位合成和致密化碳化硼和碳化硼-石墨烯纳米片复合材料

摘要 碳化硼和碳化硼-石墨烯纳米片(GNP)的同时合成和致密化是通过非晶硼和石墨烯纳米片的反应放电等离子烧结在 1200 至 1600 ℃、50 MPa 压力和加热速率下进行的。 50 °C/min 和 100 °C/min。X 射线衍射和拉曼光谱证实了所需相的形成。电子显微图像揭示了亚微米和纳米尺寸的板状颗粒的形成。在 1600 °C 的温度和 50 °C/min 的加热速率下,对于 B4C 化学计量组成,获得了具有 96%TD 的高相对密度的烧结产品,并且还表现出 21.10 GPa 的最大硬度。
更新日期:2018-12-01
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