A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of ultra-light silicon nitride foamed ceramic
The invention relates to a preparation method of ultra-light silicon nitride foamed ceramic, wherein the preparation method comprises the following steps: (1) dispersing silicon nitride particles, a sintering aid and a gelling agent in deionized water, and mixing to obtain silicon nitride slurry with the solid content of 45-60%; (2) adding a foaming agent into the obtained silicon nitride slurry,injecting into a mold after foaming treatment, and then curing, demolding and drying to obtain a silicon nitride foamed ceramic green body, wherein the foaming agent is a composite foaming agent obtained by compounding an anionic surfactant and a cationic surfactant in advance; and (3) carrying out pressureless sintering on the obtained silicon nitride foamed ceramic green body in a nitrogen atmosphere to obtain the silicon nitride foamed ceramic.
本发明涉及一种超轻质氮化硅泡沫陶瓷的制备方法，包括如下步骤：（1）将氮化硅颗粒、烧结助剂和凝胶剂分散于去离子水中，混合得到固含量为45～60%的氮化硅浆料；（2）将发泡剂加入所得氮化硅浆料中，经发泡处理后注入模具中，再经固化、脱模和干燥后，得到氮化硅泡沫陶瓷坯体，所述发泡剂为阴离子表面活性剂和阳离子表面活性剂预先复合得到的复合发泡剂；（3）将所得氮化硅泡沫陶瓷坯体在氮气气氛下，进行无压烧结，得到氮化硅泡沫陶瓷。
Preparation method of ultra-light silicon nitride foamed ceramic
The invention relates to a preparation method of ultra-light silicon nitride foamed ceramic, wherein the preparation method comprises the following steps: (1) dispersing silicon nitride particles, a sintering aid and a gelling agent in deionized water, and mixing to obtain silicon nitride slurry with the solid content of 45-60%; (2) adding a foaming agent into the obtained silicon nitride slurry,injecting into a mold after foaming treatment, and then curing, demolding and drying to obtain a silicon nitride foamed ceramic green body, wherein the foaming agent is a composite foaming agent obtained by compounding an anionic surfactant and a cationic surfactant in advance; and (3) carrying out pressureless sintering on the obtained silicon nitride foamed ceramic green body in a nitrogen atmosphere to obtain the silicon nitride foamed ceramic.
本发明涉及一种超轻质氮化硅泡沫陶瓷的制备方法，包括如下步骤：（1）将氮化硅颗粒、烧结助剂和凝胶剂分散于去离子水中，混合得到固含量为45～60%的氮化硅浆料；（2）将发泡剂加入所得氮化硅浆料中，经发泡处理后注入模具中，再经固化、脱模和干燥后，得到氮化硅泡沫陶瓷坯体，所述发泡剂为阴离子表面活性剂和阳离子表面活性剂预先复合得到的复合发泡剂；（3）将所得氮化硅泡沫陶瓷坯体在氮气气氛下，进行无压烧结，得到氮化硅泡沫陶瓷。
Preparation method of ultra-light silicon nitride foamed ceramic
一种超轻质氮化硅泡沫陶瓷的制备方法
ZENG YUPING (author) / DU ZHONGPEI (author) / ZUO KAIHUI (author) / XIA YONGFENG (author) / YAO DONGXU (author) / YIN JINWEI (author) / LIANG HANQIN (author)
2020-05-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
Preparation method of foamed ceramic productand foamed ceramic product
| European Patent Office | 2020
Silicon carbide foamed ceramic and preparation method thereof
| European Patent Office | 2021