Preparation of porous Al2O3 ceramics with in situ formed C-nanowires derived form silicone resin

被引：9
|
作者：
Yu, Jianbo [1 ]
Yang, Zhigang [2 ]
Song, Zongcheng [1 ]
Deng, Kang [1 ]
Ren, Zhongming [1 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, State Key Lab Adv Special Steels, Shanghai 200072, Peoples R China
[2] Shijiazhuang Tiedao Univ, Sch Mat Sci & Engn, Shifiazhuang 050043, Peoples R China
来源：
MATERIALS LETTERS | 2018年 / 212卷
基金：
中国国家自然科学基金;
关键词：
Porous; Fibre technology; Sintering; Nanowire; Ceramics; LOW-TEMPERATURE FABRICATION; SIC CERAMICS; BINDER;
D O I：
10.1016/j.matlet.2017.10.054
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Porous Al2O3 ceramics with different SiC contents were successfully prepared through preceramic polymer process following by sintering at 1500 degrees C at N-2 atmosphere, where ball-shape Al2O3 powders and preceramic polymer silicone resin were used as the matrix and the binder. According to the SEM, XRD and elemental analysis, it was found that C-nanowires were formed in the gap between grains in sintered samples, which was formed by the organic-inorganic transformation of silicone resin at N-2 atmosphere. The existence of SiC was beneficial for the formation of C-nanowires. With the increase of SiC content in the samples, the porosity had no evidently change, however, the bending strength increased from 23 MPa to 50 MPa. (C) 2017 Elsevier By. All rights reserved.
引用
收藏
页码：271 / 274
页数：4
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