Porous SiC/SiCN composite ceramics fabricated by foaming and reaction sintering

被引：24

作者：

Li, Jun ^{[1
]}

Yuan, Wenjie ^{[1
]}

Deng, Chengji ^{[1
]}

Zhu, Hongxi ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2017年 / 37卷 / 03期

关键词：

Porous ceramics; SiCN; Foaming; Reaction sintering; POLYMER-DERIVED CERAMICS; CHEMICAL-VAPOR-DEPOSITION; NITRIDE THIN-FILMS; C-N CERAMICS; SICN CERAMICS; SILICON; PRECURSOR; NANOCOMPOSITE; STABILITY; OXIDATION;

D O I：

10.1016/j.jeurceramsoc.2016.10.025

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous SiC/SiCN composite ceramics with heterogeneous pore structure and rod-like SiCN grains were fabricated by foaming and reaction sintering. The mixture slurry containing SiC and silicon as raw materials, cornstarch as binder, Y2O3 as sintering additive and an electrosteric dispersant was stirred with foams derived from pre-foaming using foaming agent. The casted green body was sintered at 1650 degrees C under nitrogen atmosphere. The results demonstrated that the porous SiC/SiCN ceramics exhibited hierarchical vias ranging from 1 mu m to 1 mm and the rod-like crystalline SiCN grains generated in the SiC matrix. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：1131 / 1134

页数：4

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