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Transition phase assisted low-temperature sintering method of boron nitride multi-phase ceramic
The invention discloses a transition phase assisted low-temperature sintering method of boron nitride multi-phase ceramic and relates to a sintering method of boron nitride multi-phase ceramic. The invention aims at solving the problems that the crystal grains of the prepared multi-phase ceramic are coarse and the mechanical performance is poor for a reason that the sintering temperature of the existing boron nitride multi-phase ceramic. The method comprises the following steps: 1) preparing composite sintering assistant powder; 2) preparing composite powder; 3) increasing the temperature of the composite powder under a vacuum or inert atmosphere condition, increasing pressure and then decreasing the temperature to obtain the boron nitride multi-phase ceramic. The compactness of the boron nitride multi-phase ceramic prepared by adopting the method disclosed by the invention can reach more than 95 percent, the crystal grains of the material are fine and the comprehensive mechanical performance is excellent. The invention belongs to the field of preparation of boron nitride multi-phase ceramics.
Transition phase assisted low-temperature sintering method of boron nitride multi-phase ceramic
The invention discloses a transition phase assisted low-temperature sintering method of boron nitride multi-phase ceramic and relates to a sintering method of boron nitride multi-phase ceramic. The invention aims at solving the problems that the crystal grains of the prepared multi-phase ceramic are coarse and the mechanical performance is poor for a reason that the sintering temperature of the existing boron nitride multi-phase ceramic. The method comprises the following steps: 1) preparing composite sintering assistant powder; 2) preparing composite powder; 3) increasing the temperature of the composite powder under a vacuum or inert atmosphere condition, increasing pressure and then decreasing the temperature to obtain the boron nitride multi-phase ceramic. The compactness of the boron nitride multi-phase ceramic prepared by adopting the method disclosed by the invention can reach more than 95 percent, the crystal grains of the material are fine and the comprehensive mechanical performance is excellent. The invention belongs to the field of preparation of boron nitride multi-phase ceramics.
Transition phase assisted low-temperature sintering method of boron nitride multi-phase ceramic
WANG YUJIN (author) / CHEN LEI (author) / ZHANG XINYU (author) / JIA DECHANG (author) / ZHOU YU (author)
2015-12-30
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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