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Porous Si3N4ceramics fabricated through a modified incomplete gelcasting and freeze-drying method

文献类型：期刊论文

作者Wang, Feng1; Gu, Hao2; Yin, Jinwei1; Yao, Dongxu1; Xia, Yongfeng1; Zuo, Kaihui1; Liang, Hanqin1; Ning, Congqin1; Zeng, YuPing1
刊名Ceramics International
出版日期2017
卷号43期号:17页码:14678-14682
ISSN号02728842
DOI10.1016/j.ceramint.2017.07.194
英文摘要Porous Si3N4ceramics were fabricated via incomplete gelcasting and freeze-drying method followed by pressureless sintering at 1690 . The specific way used in this work was to slow down the gelling process of ceramic suspensions by stopping water evaporation. Since water was retained and further frozen before the suspensions were totally gelled in normal way, pore structure was modified. Compared to direct freeze-casting, the polymer framework generated by polymerization of organic components prevented ice crystals from growing to large sizes. Performance of porous ceramics can also be controlled by the gelling time. Further on, porous Si3N4ceramics with controlled pore structures can be obtained without using other organic additives. The gelling agent used in this study is a copolymer of isobutylene and maleic anhydride (IBMA). The small addition amount was only 0.2 wt%, but could greatly change the microstructure as well as mechanical performance of porous ceramics. © 2017 Elsevier Ltd and Techna Group S.r.l.
源URL[http://ir.sic.ac.cn/handle/331005/25445]  
专题中国科学院上海硅酸盐研究所
作者单位1.Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.Shanghai Radio Equipment Research Institute, Shanghai; 200090, China
推荐引用方式
GB/T 7714		 Wang, Feng,Gu, Hao,Yin, Jinwei,et al. Porous Si3N4ceramics fabricated through a modified incomplete gelcasting and freeze-drying method[J]. Ceramics International,2017,43(17):14678-14682.
APA Wang, Feng.,Gu, Hao.,Yin, Jinwei.,Yao, Dongxu.,Xia, Yongfeng.,...&Zeng, YuPing.(2017).Porous Si3N4ceramics fabricated through a modified incomplete gelcasting and freeze-drying method.Ceramics International,43(17),14678-14682.
MLA Wang, Feng,et al."Porous Si3N4ceramics fabricated through a modified incomplete gelcasting and freeze-drying method".Ceramics International 43.17(2017):14678-14682.

入库方式： OAI收割

来源：上海硅酸盐研究所

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