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Silicon nitride green body and preparation method thereof
The invention discloses a silicon nitride green body and a preparation method thereof, belongs to the technical field of silicon nitride green bodies, and solves the problems of poor sphericity of granules prepared by the existing spray granulation process and low density of the silicon nitride green body after compression molding. The preparation method of the silicon nitride green body comprises the following steps: mixing silicon nitride micron powder, a sintering aid, a dispersing agent, a binder and deionized water, and then carrying out ball milling to obtain slurry; the mass ratio of the sintering aid to the dispersant to the binder to the silicon nitride powder is (1 * 10 <-4 >-0.2): (1 * 10 <-4 >-0.25): (1 * 10 <-4 >-0.1): 1, and the solid content of the slurry is 40-55 wt.%; carrying out spray granulation on the slurry to prepare granules; pressing and molding the granules to obtain a green body; by adopting a spray granulation technology and combining the dosage proportion of the silicon nitride micron powder, the sintering aid, the dispersing agent and the binder and the solid content of the slurry, the green body with high density and good uniformity can be prepared.
一种氮化硅生坯及其制备方法，属于氮化硅生坯技术领域，克服现有喷雾造粒工艺制备的粒料球形度差、压制成型后氮化硅生坯密度低的问题。本发明氮化硅生坯的制备方法包括以下步骤：将氮化硅微米粉、烧结助剂、分散剂、粘结剂和去离子水混合后球磨，获得浆料；所述烧结助剂、分散剂、粘结剂与氮化硅粉末的质量比为(1×10‑4～0.2)：(1×10‑4～0.25)：(1×10‑4～0.1)：1，浆料的固含量为40～55wt.％；将所述浆料进行喷雾造粒，制得粒料；将粒料压制成型，制得生坯。本发明通过采用喷雾造粒技术并结合氮化硅微米粉、烧结助剂、分散剂、粘结剂的用量比例及浆料的固含量，可制得高密度、均匀性好的生坯。
Silicon nitride green body and preparation method thereof
The invention discloses a silicon nitride green body and a preparation method thereof, belongs to the technical field of silicon nitride green bodies, and solves the problems of poor sphericity of granules prepared by the existing spray granulation process and low density of the silicon nitride green body after compression molding. The preparation method of the silicon nitride green body comprises the following steps: mixing silicon nitride micron powder, a sintering aid, a dispersing agent, a binder and deionized water, and then carrying out ball milling to obtain slurry; the mass ratio of the sintering aid to the dispersant to the binder to the silicon nitride powder is (1 * 10 <-4 >-0.2): (1 * 10 <-4 >-0.25): (1 * 10 <-4 >-0.1): 1, and the solid content of the slurry is 40-55 wt.%; carrying out spray granulation on the slurry to prepare granules; pressing and molding the granules to obtain a green body; by adopting a spray granulation technology and combining the dosage proportion of the silicon nitride micron powder, the sintering aid, the dispersing agent and the binder and the solid content of the slurry, the green body with high density and good uniformity can be prepared.
一种氮化硅生坯及其制备方法，属于氮化硅生坯技术领域，克服现有喷雾造粒工艺制备的粒料球形度差、压制成型后氮化硅生坯密度低的问题。本发明氮化硅生坯的制备方法包括以下步骤：将氮化硅微米粉、烧结助剂、分散剂、粘结剂和去离子水混合后球磨，获得浆料；所述烧结助剂、分散剂、粘结剂与氮化硅粉末的质量比为(1×10‑4～0.2)：(1×10‑4～0.25)：(1×10‑4～0.1)：1，浆料的固含量为40～55wt.％；将所述浆料进行喷雾造粒，制得粒料；将粒料压制成型，制得生坯。本发明通过采用喷雾造粒技术并结合氮化硅微米粉、烧结助剂、分散剂、粘结剂的用量比例及浆料的固含量，可制得高密度、均匀性好的生坯。
Silicon nitride green body and preparation method thereof
一种氮化硅生坯及其制备方法
ZHANG YIMING (author) / HOU DONG (author) / NIE JINGKAI (author) / HAN YU (author) / ZHU ZHIXIANG (author) / LIU HUI (author) / HE QIANG (author) / JI JUN (author) / XU ZONGCHAO (author) / LU LICHENG (author)
2024-04-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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