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YIN Bang-yue~1, WANG Ling-sen~2 (1. China Institute of Atomic Energy, P.O.Box 275-51, Beijing 102413, China; Metallurgy, Central South University, Changsha 410083, China). Study on Physical Properties of Hot-pressing Sintered BC_4 Ceramic[J]. Atomic Energy Science and Technology, 2004, 38(5): 429-429. DOI: 10.7538/yzk.2004.38.05.0429
Citation: YIN Bang-yue~1, WANG Ling-sen~2 (1. China Institute of Atomic Energy, P.O.Box 275-51, Beijing 102413, China; Metallurgy, Central South University, Changsha 410083, China). Study on Physical Properties of Hot-pressing Sintered BC_4 Ceramic[J]. Atomic Energy Science and Technology, 2004, 38(5): 429-429. DOI: 10.7538/yzk.2004.38.05.0429
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  • The hot-pressing sintering experiments of boron carbide powders (3.85 μm) obtained by jet milling were carried out. In addition, the physical properties of hot-pressing sintered B_4C ceramic were studied. The results show that the B_4C ceramic sintered at 2 150 ℃ for 10 min has a relative density of 91.6%. Its ambient temperature Young modulus and Poisson ratio are 292.5 GPa and 0.16, respectively. Beyond 1 000 ℃, as temperature increases, its linear expension coefficient increases but the thermal conductivity decreases, and their average values are 4.42×10~(-6)K~(-1) and 13.2 W/(m·K), respectively.
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