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《ATOMIC ENERGY SCIENCE AND TECHNOLOGY》 1997-05
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METHODS OF SYNTHESIZING BORON CARBIDE POWDER AND CONTROLLING ITS SINTERING PIECE DENSITY

Fu Bo Li Shengrong Wang Ronglan (Xi'an Jiaotong University, 710049 )  
The boron carbide powder is synthesized directly and its composition,lattice constant and mean particle size are measured,the optimum technological parameters of synthetic reaction are determined experimentally. The volume density control method of hot pressing sintering boron carbide are studied ,and its microstructure and properties are tested. The maximal deviation of volume density of sintering boron carbide is ±2% of theory density(T.D.),when position limitation piece in the furnace is used to control the piece density precision.The various property indexes of the sintered boron carbide with 92% T.D.of volume density can reach or exceed the various reference values required by the performance of reactor. The bending strength of the sintered piece gets about 10% lower when temperature increases from normal temperature to 600 °C.
【Fund】: 国家“863”计划项目
【CateGory Index】: TQ127.12
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