Structure and oxidation resistance of micro-cellular Si-SiC foams derived from natural resins

被引：15

作者：

Amaral-Labat, G. ^{[1
,2
]}

Zollfrank, C. ^{[3
,4
]}

Ortona, A. ^{[5
]}

Pusterla, S. ^{[5
]}

Pizzi, A. ^{[1
,6
]}

Fierro, V. ^{[2
]}

Celzard, A. ^{[1
,2
]}

机构：

[1] Univ Lorraine, ENSTIB, F-88051 Epinal 9, France

[2] ENSTIB, CNRS, UMR 7198, Inst Jean Lamour, F-88051 Epinal 9, France

[3] Tech Univ Munich, WZ Straubing, D-94315 Straubing, Germany

[4] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, D-91058 Erlangen, Germany

[5] Univ Appl Sci SUPSI, ICIMSI Res Inst, Dept Technol & Innovat, CH-6928 Manno, Switzerland

[6] ENSTIB, LERMAB EA 4370, F-88051 Epinal 9, France

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 02期

关键词：

Precursors: Microstructure-final; Thermal conductivity; SiC; PROCESSING PARAMETERS; CARBON; MICROSTRUCTURE; REARRANGEMENT; CARBONIZATION; CONDUCTIVITY; CERAMICS;

D O I：

10.1016/j.ceramint.2012.08.032

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：

Microcellular Si-SiC porous ceramics were prepared from rigid foams derived from tannin-based natural resins. Such natural foams were used either as such, i.e. in the "green" state, or after conversion at 900 degrees C into vitreous cellular carbon foams. Various preparation methods were tested: replica with preceramic polymers followed by pyrolysis, liquid silicon infiltration (LSI) and vapour silicon infiltration (VSI). Depending on the method, very different materials have been obtained, whose morphology and microstructure have been investigated by SEM, XRD and Raman, whereas oxidation resistance has been evaluated by weight loss measurements in dry air at high temperature. The resulting porous ceramics' properties were discussed in relation to the preparation methods and their morphology and conversion of tannin-based foams into SiC. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1841 / 1851

页数：11

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