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Silicon nitride ceramic and preparation method thereof
The invention discloses silicon nitride ceramic and a preparation method thereof, and belongs to the field of ceramic. The preparation method comprises the following steps: in an organic solvent, taking beta-phase silicon nitride powder as an aggregate, taking amorphous-phase silicon nitride powder as an activating agent, taking a beta-diketone rare earth complex as a sintering aid and taking a mixture of polysilazane and PVB as a binder, carrying out molding treatment, and carrying out high-temperature sintering to obtain the silicon nitride ceramic, the density of the ceramic material is 3.05-3.29 g/cm < 3 >, the bending strength is 750-1100 MPa, and the heat conductivity is 65-130 W/(m * K). The obtained silicon nitride ceramic has the advantages of high densification degree, high mechanical strength, high thermal conductivity and the like, and has a wide application scene.
本发明公开了一种氮化硅陶瓷及其制备方法，属于陶瓷领域。制备方法为在有机溶剂中，以β相氮化硅粉为骨料、以非晶相氮化硅粉为活化剂，以β‑二酮稀土配合物作为烧结助剂，以聚硅氮烷和PVB的混合物作为粘结剂，经成型处理后，高温烧结得氮化硅陶瓷；陶瓷材料的密度为3.05～3.29g/cm3，抗弯强度为750～1100MPa，热导率为65～130W/(m·K)。本发明所得氮化硅陶瓷具有致密化程度高、机械强度高，导热率高等优势，具有广泛的应用场景。
Silicon nitride ceramic and preparation method thereof
The invention discloses silicon nitride ceramic and a preparation method thereof, and belongs to the field of ceramic. The preparation method comprises the following steps: in an organic solvent, taking beta-phase silicon nitride powder as an aggregate, taking amorphous-phase silicon nitride powder as an activating agent, taking a beta-diketone rare earth complex as a sintering aid and taking a mixture of polysilazane and PVB as a binder, carrying out molding treatment, and carrying out high-temperature sintering to obtain the silicon nitride ceramic, the density of the ceramic material is 3.05-3.29 g/cm < 3 >, the bending strength is 750-1100 MPa, and the heat conductivity is 65-130 W/(m * K). The obtained silicon nitride ceramic has the advantages of high densification degree, high mechanical strength, high thermal conductivity and the like, and has a wide application scene.
本发明公开了一种氮化硅陶瓷及其制备方法，属于陶瓷领域。制备方法为在有机溶剂中，以β相氮化硅粉为骨料、以非晶相氮化硅粉为活化剂，以β‑二酮稀土配合物作为烧结助剂，以聚硅氮烷和PVB的混合物作为粘结剂，经成型处理后，高温烧结得氮化硅陶瓷；陶瓷材料的密度为3.05～3.29g/cm3，抗弯强度为750～1100MPa，热导率为65～130W/(m·K)。本发明所得氮化硅陶瓷具有致密化程度高、机械强度高，导热率高等优势，具有广泛的应用场景。
Silicon nitride ceramic and preparation method thereof
一种氮化硅陶瓷及其制备方法
HAN ZHAO (author) / ZHANG XIAOYU (author) / TONG BIHAI (author) / LIU PENGFEI (author)
2024-09-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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