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采用基于熔盐法制备的Si3N4/MgSiN2复合粉体制备高导热氮化硅陶瓷的方法
本发明公开了采用基于熔盐法制备的Si3N4/MgSiN2复合粉体制备高导热氮化硅陶瓷的方法，利用熔盐法制备了Si3N4和MgSiN2的复合粉体，相比常规球磨法将烧结助剂与氮化硅混合，基于熔盐法制备的复合粉体可以实现MgSiN2助剂在Si3N4中的均匀分散，有效解决Si3N4和MgSiN2混合过程中产生的团聚和不均匀等问题，提高了MgSiN2在Si3N4中分散的均匀性。通过气压烧结，以原位生成的MgSiN2作为烧结助剂，制备出了高热导氮化硅陶瓷。
The invention discloses a method for preparing high-thermal-conductivity silicon nitride ceramic by using Si3N4/MgSiN2 composite powder prepared based on a molten salt method, the composite powder of Si3N4 and MgSiN2 is prepared by using the molten salt method, and compared with a conventional ball milling method in which a sintering aid is mixed with silicon nitride, the composite powder prepared based on the molten salt method can realize uniform dispersion of the MgSiN2 aid in Si3N4, so that the thermal conductivity of the high-thermal-conductivity silicon nitride ceramic is improved, and the thermal conductivity of the high-thermal-conductivity silicon nitride ceramic is improved. The problems of agglomeration, nonuniformity and the like generated in the mixing process of the Si3N4 and the MgSiN2 are effectively solved, and the dispersion uniformity of the MgSiN2 in the Si3N4 is improved. Through air pressure sintering, MgSiN2 generated in situ is used as a sintering aid, and the high-thermal-conductivity silicon nitride ceramic is prepared.
采用基于熔盐法制备的Si3N4/MgSiN2复合粉体制备高导热氮化硅陶瓷的方法
本发明公开了采用基于熔盐法制备的Si3N4/MgSiN2复合粉体制备高导热氮化硅陶瓷的方法，利用熔盐法制备了Si3N4和MgSiN2的复合粉体，相比常规球磨法将烧结助剂与氮化硅混合，基于熔盐法制备的复合粉体可以实现MgSiN2助剂在Si3N4中的均匀分散，有效解决Si3N4和MgSiN2混合过程中产生的团聚和不均匀等问题，提高了MgSiN2在Si3N4中分散的均匀性。通过气压烧结，以原位生成的MgSiN2作为烧结助剂，制备出了高热导氮化硅陶瓷。
The invention discloses a method for preparing high-thermal-conductivity silicon nitride ceramic by using Si3N4/MgSiN2 composite powder prepared based on a molten salt method, the composite powder of Si3N4 and MgSiN2 is prepared by using the molten salt method, and compared with a conventional ball milling method in which a sintering aid is mixed with silicon nitride, the composite powder prepared based on the molten salt method can realize uniform dispersion of the MgSiN2 aid in Si3N4, so that the thermal conductivity of the high-thermal-conductivity silicon nitride ceramic is improved, and the thermal conductivity of the high-thermal-conductivity silicon nitride ceramic is improved. The problems of agglomeration, nonuniformity and the like generated in the mixing process of the Si3N4 and the MgSiN2 are effectively solved, and the dispersion uniformity of the MgSiN2 in the Si3N4 is improved. Through air pressure sintering, MgSiN2 generated in situ is used as a sintering aid, and the high-thermal-conductivity silicon nitride ceramic is prepared.
采用基于熔盐法制备的Si3N4/MgSiN2复合粉体制备高导热氮化硅陶瓷的方法
2024-06-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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