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Low-shrinkage porous silicon nitride ceramic and preparation method thereof
The invention discloses a low-shrinkage porous silicon nitride ceramic and a preparation method thereof. The low-shrinkage porous silicon nitride ceramic comprises the following components: methacrylamide, pure water, a sintering aid, alpha silicon nitride, a metal oxide, aluminum oxide, a rare earth oxide, dimethylacrylamide and a dispersing agent. By adopting the technical scheme, the low-shrinkage porous silicon nitride ceramic prepared by the method is simple to operate, the ceramic powder is dispersed in the organic monomer solution, and the organic monomer is subjected to in-situ polymerization reaction under the action of the catalyst and the initiator to form a net-shaped structure to wrap the ceramic powder to form a hard and solid green body, compared with slip casting, the forming period is short, the structure and density of the product are uniform, the performance is stable and reliable, compared with slip casting, gel casting does not need an expensive forming mold, wateris generally used as a dispersion medium, only a small amount of adhesive is needed, and therefore a strict adhesive discharging procedure is not needed, and the method is suitable for batch production and one-time forming of special workpieces.
本发明公开了一种低收缩率多孔氮化硅陶瓷及其制备方法，包括以下组成部分：甲基丙烯酰胺、纯水、烧结助剂、α‑氮化硅、金属氧化物、氧化铝、稀土氧化物、二甲基丙烯酰胺和分散剂。本发明通过采用上述技术方案，该方法制备的低收缩率多孔氮化硅陶瓷操作简单，陶瓷粉末分散在有机单体溶液中，有机单体在催化剂和引发剂作用下，发生原位聚合反应形成网状结构将陶瓷粉术包裹其中，成为硬实的坏体，相对注浆成型来说，成型周期短，制品的结构与密度均匀，性能稳定可靠，与注浆成型相比，凝胶注模成型不需要昂贵的成型模具，一般以水作分散介质，只需少量的粘合剂，因此不需要严格的排胶工序，适合批量生产及特殊制件的一次成型。
Low-shrinkage porous silicon nitride ceramic and preparation method thereof
The invention discloses a low-shrinkage porous silicon nitride ceramic and a preparation method thereof. The low-shrinkage porous silicon nitride ceramic comprises the following components: methacrylamide, pure water, a sintering aid, alpha silicon nitride, a metal oxide, aluminum oxide, a rare earth oxide, dimethylacrylamide and a dispersing agent. By adopting the technical scheme, the low-shrinkage porous silicon nitride ceramic prepared by the method is simple to operate, the ceramic powder is dispersed in the organic monomer solution, and the organic monomer is subjected to in-situ polymerization reaction under the action of the catalyst and the initiator to form a net-shaped structure to wrap the ceramic powder to form a hard and solid green body, compared with slip casting, the forming period is short, the structure and density of the product are uniform, the performance is stable and reliable, compared with slip casting, gel casting does not need an expensive forming mold, wateris generally used as a dispersion medium, only a small amount of adhesive is needed, and therefore a strict adhesive discharging procedure is not needed, and the method is suitable for batch production and one-time forming of special workpieces.
本发明公开了一种低收缩率多孔氮化硅陶瓷及其制备方法，包括以下组成部分：甲基丙烯酰胺、纯水、烧结助剂、α‑氮化硅、金属氧化物、氧化铝、稀土氧化物、二甲基丙烯酰胺和分散剂。本发明通过采用上述技术方案，该方法制备的低收缩率多孔氮化硅陶瓷操作简单，陶瓷粉末分散在有机单体溶液中，有机单体在催化剂和引发剂作用下，发生原位聚合反应形成网状结构将陶瓷粉术包裹其中，成为硬实的坏体，相对注浆成型来说，成型周期短，制品的结构与密度均匀，性能稳定可靠，与注浆成型相比，凝胶注模成型不需要昂贵的成型模具，一般以水作分散介质，只需少量的粘合剂，因此不需要严格的排胶工序，适合批量生产及特殊制件的一次成型。
Low-shrinkage porous silicon nitride ceramic and preparation method thereof
一种低收缩率多孔氮化硅陶瓷及其制备方法
LI YONGQUAN (author) / CHEN JUXI (author) / ZENG QINGDANG (author) / ZHU FULIN (author) / XIAO LI (author)
2021-01-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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