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一种采用核壳结构Si3N4@MgSiN2粉体制备高导热高强度氮化硅陶瓷的方法
本发明公开了一种采用核壳结构Si3N4@MgSiN2粉体制备高导热高强度氮化硅陶瓷的方法，采用镁粉和氮化硅粉为主要原料制备Si3N4@MgSiN2，原位生成的MgSiN2这种非氧化物烧结助剂可以有效降低液相中的氧含量，阻碍晶格氧的形成，促进致密化及晶粒发育，进而提高Si3N4陶瓷的热导率。
The invention discloses a method for preparing high-thermal-conductivity and high-strength silicon nitride ceramic by adopting core-shell structure Si3N4-coated MgSiN2 powder, magnesium powder and silicon nitride powder are adopted as main raw materials to prepare Si3N4-coated MgSiN2, the in-situ generated MgSiN2 which is a non-oxide sintering aid can effectively reduce the oxygen content in a liquid phase, hinder the formation of lattice oxygen, promote densification and grain development, and improve the thermal conductivity of the ceramic. Further, the heat conductivity of the Si3N4 ceramic is improved.
一种采用核壳结构Si3N4@MgSiN2粉体制备高导热高强度氮化硅陶瓷的方法
本发明公开了一种采用核壳结构Si3N4@MgSiN2粉体制备高导热高强度氮化硅陶瓷的方法，采用镁粉和氮化硅粉为主要原料制备Si3N4@MgSiN2，原位生成的MgSiN2这种非氧化物烧结助剂可以有效降低液相中的氧含量，阻碍晶格氧的形成，促进致密化及晶粒发育，进而提高Si3N4陶瓷的热导率。
The invention discloses a method for preparing high-thermal-conductivity and high-strength silicon nitride ceramic by adopting core-shell structure Si3N4-coated MgSiN2 powder, magnesium powder and silicon nitride powder are adopted as main raw materials to prepare Si3N4-coated MgSiN2, the in-situ generated MgSiN2 which is a non-oxide sintering aid can effectively reduce the oxygen content in a liquid phase, hinder the formation of lattice oxygen, promote densification and grain development, and improve the thermal conductivity of the ceramic. Further, the heat conductivity of the Si3N4 ceramic is improved.
一种采用核壳结构Si3N4@MgSiN2粉体制备高导热高强度氮化硅陶瓷的方法
2024-05-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Fabrication of b-Si3N4 whiskers by combustion synthesis with MgSiN2 as additives
| British Library Online Contents | 2005
A novel route for preparing MgSiN2 powder by combustion synthesis
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Characterization of grain alignment in Si3N4(w)/Si3N4 composites
| British Library Online Contents | 2004