Densification behavior and related phenomena of spark plasma sintered boron carbide |
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| Authors: | Xiaoguang Li Dongliang Jiang Jingxian Zhang Qingling Lin Zhongming Chen Zhengren Huang |
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| Affiliation: | 1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this work, boron carbide ceramics were sintered in the temperature range of 1400–1600 °C by spark plasma sintering (SPS). The influence of sintering temperature, heating rate, and holding time on the microstructure, densification process and physical property was studied. The heating rate was found to have greater influence than that of the holding time on the microstructure and the densification of boron carbide. The optimal sintering temperature was 1600 °C under the heating rate higher than 100 °C/min. The relative density, flexural strength, Vickers hardness and fracture toughness of the sample synthesized at 1600 °C were 98.33%, 828 MPa, 31 GPa and 2.66±0.29 MPa m1/2, respectively. The densification mechanism was also investigated. |
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| Keywords: | Boron carbide Spark plasma sintering Sintering behavior XRD TEM |
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