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《Journal of Materials and Metallurgy》 2003-04
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Study on properties of high-density boron carbide sintered with vacuum hot pressing

WANG Hui-hua~1, WANG De-yong~2, TU Gan-feng~2(1.School of Materials Science and Engineering, Shenyang Institute of Chemical Technology,Shenyang 110142, China;2.School of Materials and Metallurgy, Northeastern University, shenyang 110004, China)  
Influential factors such as heating rate and sintering temperature are studied during the process of hot-pressing sintering of boron carbide under vacuum. The results show that (1)the proper heating rate is 5℃/min before 1900℃ and 2℃/min between 1900℃ and 1950℃, (2) the sintering temperature must be controlled at 1950℃ so that the average crystal dimension can be controlled at 4 micrometers, the bending strength can reach 357MPa, and the microhardness can reach 24.63GPa. According to the experimental results, the feasible industrial sintering conditions are proposed.
【CateGory Index】: TQ12
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