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Preparation method of reactive sintered boron carbide-silicon carbide composite ceramic material
The invention relates to a preparation method of a reactive sintered boron carbide-silicon carbide composite ceramic material. The preparation method comprises the following steps: (1) mixing: ball milling raw materials (80-90wt% of boron carbide, 5-18wt% of carbon dust and 1-5wt% of a sintering aid) in a ball milling tank; (2) molding: putting the mixture obtained in the step (1) in a mold and performing dry pressing molding to obtain a boron carbide ceramic biscuit; (3) reactive sintering: putting the boron carbide ceramic biscuit obtained in the step (2) in a reactive sintering furnace; sintering at a high temperature in vacuum for infiltrating and melting a metal silicon wafer to obtain the reactive sintered boron carbide-silicon carbide composite ceramic material. The method disclosed by the invention, raw materials and proportion are scientific and reasonable; the production method is safe and low in cost; the prepared boron carbide-silicon carbide composite ceramic material is capable of meeting the thermal neutron shielding performance requirement for waste in the nuclear industry.
Preparation method of reactive sintered boron carbide-silicon carbide composite ceramic material
The invention relates to a preparation method of a reactive sintered boron carbide-silicon carbide composite ceramic material. The preparation method comprises the following steps: (1) mixing: ball milling raw materials (80-90wt% of boron carbide, 5-18wt% of carbon dust and 1-5wt% of a sintering aid) in a ball milling tank; (2) molding: putting the mixture obtained in the step (1) in a mold and performing dry pressing molding to obtain a boron carbide ceramic biscuit; (3) reactive sintering: putting the boron carbide ceramic biscuit obtained in the step (2) in a reactive sintering furnace; sintering at a high temperature in vacuum for infiltrating and melting a metal silicon wafer to obtain the reactive sintered boron carbide-silicon carbide composite ceramic material. The method disclosed by the invention, raw materials and proportion are scientific and reasonable; the production method is safe and low in cost; the prepared boron carbide-silicon carbide composite ceramic material is capable of meeting the thermal neutron shielding performance requirement for waste in the nuclear industry.
Preparation method of reactive sintered boron carbide-silicon carbide composite ceramic material
CAO JIANWU (Autor:in) / GAO XIAOJU (Autor:in) / ZHANG CONG (Autor:in) / MAN PENG (Autor:in) / YAN DONGMING (Autor:in) / XIE WEI (Autor:in) / ZHOU YAWEI (Autor:in) / LI GUOBIN (Autor:in) / QU JUNFENG (Autor:in) / LI KANG (Autor:in)
05.08.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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