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Nano-porous material and preparation method thereof
The invention belongs to the field of material preparation, and particularly relates to a nano-porous silicon carbide ceramic material and a preparation method thereof. According to the nano-porous material disclosed by the invention, carbonate is used as a pore forming agent, the decomposition temperature of carbonate is utilized, in the sintering process of the silicon carbide ceramic, the carbonate is decomposed along with temperature rise to generate and release carbon dioxide, the effect of generating nanoscale pores in the silicon carbide ceramic is achieved, and finally the nano-poroussilicon carbide ceramic material is prepared. The pore diameter of the nano porous material is 20 to 300nm, the prepared nano-porous material has the porosity of 50%-80%, the Vickers hardness of 650-950 and the toughness of 10-25 MPa/m<1/2>, and has the advantages of high porosity and strong mechanical properties, and the preparation method of the nano-porous material is simple, easy to operate, green, environmentally friendly and suitable for industrial large-scale production.
本发明属于材料制备领域，具体涉及一种纳米多孔碳化硅陶瓷材料及其制备方法。本发明所述纳米多孔材料是以碳酸盐为造孔剂，利用碳酸盐的分解温度，在碳化硅陶瓷的烧结过程中，随着温度的升高而使碳酸盐分解产生并释放二氧化碳，实现碳化硅陶瓷中产生纳米级孔隙的效果，最终制备得到纳米多孔碳化硅陶瓷材料。所述纳米多孔材料的孔径为20‑300nm，孔隙率为50％‑80％，维氏硬度为650‑950，韧性为10‑25MPa/m1/2，具有高孔隙率和机械性能强的优势，且纳米多孔材料的制备方法简单易操作、绿色环保，适合工业规模化生产。
Nano-porous material and preparation method thereof
The invention belongs to the field of material preparation, and particularly relates to a nano-porous silicon carbide ceramic material and a preparation method thereof. According to the nano-porous material disclosed by the invention, carbonate is used as a pore forming agent, the decomposition temperature of carbonate is utilized, in the sintering process of the silicon carbide ceramic, the carbonate is decomposed along with temperature rise to generate and release carbon dioxide, the effect of generating nanoscale pores in the silicon carbide ceramic is achieved, and finally the nano-poroussilicon carbide ceramic material is prepared. The pore diameter of the nano porous material is 20 to 300nm, the prepared nano-porous material has the porosity of 50%-80%, the Vickers hardness of 650-950 and the toughness of 10-25 MPa/m<1/2>, and has the advantages of high porosity and strong mechanical properties, and the preparation method of the nano-porous material is simple, easy to operate, green, environmentally friendly and suitable for industrial large-scale production.
本发明属于材料制备领域，具体涉及一种纳米多孔碳化硅陶瓷材料及其制备方法。本发明所述纳米多孔材料是以碳酸盐为造孔剂，利用碳酸盐的分解温度，在碳化硅陶瓷的烧结过程中，随着温度的升高而使碳酸盐分解产生并释放二氧化碳，实现碳化硅陶瓷中产生纳米级孔隙的效果，最终制备得到纳米多孔碳化硅陶瓷材料。所述纳米多孔材料的孔径为20‑300nm，孔隙率为50％‑80％，维氏硬度为650‑950，韧性为10‑25MPa/m1/2，具有高孔隙率和机械性能强的优势，且纳米多孔材料的制备方法简单易操作、绿色环保，适合工业规模化生产。
Nano-porous material and preparation method thereof
一种纳米多孔材料及其制备方法
WANG CHAOSHENG (author) / ZHANG RUIXIANG (author) / RUAN GUOCHENG (author) / YIN BANGJIN (author)
2020-11-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Nano porous material-silicon dioxide composite aerogel and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2021