Phase separation in an SiCO class studied by transmission electron microscopy and electron energy-loss spectroscopy

被引:151
作者
Kleebe, HJ
Turquat, C
Sorarù, GD
机构
[1] Univ Bayreuth, Inst Mat Res, D-95440 Bayreuth, Germany
[2] Univ Trent, Dept Mat Engn, I-38050 Trent, Italy
关键词
D O I
10.1111/j.1151-2916.2001.tb00792.x
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
SiCO glasses prepared from sol-gel precursors via pyrolysis in argon at temperatures ranging from 1000 degrees to 1400 degreesC were studied by transmission electron microscopy (TEM), in conjunction with electron energy-loss spectroscopy (EELS). EELS analysis showed that stoichiometric SiCO glass underwent phase separation, forming SiO2- and SiC-based environments. This process started at similar to 1200 degreesC. However, at temperatures > 1300 degreesC, precipitation of nanometer-sized SiC particles embedded in vitreous SiO2 was monitored by high-resolution TEM.
引用
收藏
页码:1073 / 1080
页数:8
相关论文
共 25 条
[1]  
An LA, 1998, J AM CERAM SOC, V81, P1349
[2]  
BABONNEAU F, 1992, MATER RES SOC SYMP P, V271, P789, DOI 10.1557/PROC-271-789
[3]   Microstructural instability and the resultant strength of Si-C-O (Nicalon) and Si-N-C-O (HPZ) fibres [J].
Bodet, R ;
Jia, N ;
Tressler, RE .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1996, 16 (06) :653-664
[4]   Study of the phase separation in amorphous silicon oxycarbide glasses under heat treatment [J].
Brequel, H ;
Parmentier, J ;
Soraru, GD ;
Schiffini, L ;
Enzo, S .
NANOSTRUCTURED MATERIALS, 1999, 11 (06) :721-731
[5]   NANOSTRUCTURAL CHARACTERIZATION OF SILICON OXYCARBIDE GLASSES AND GLASS-CERAMICS [J].
BREVAL, E ;
HAMMOND, M ;
PANTANO, CG .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (11) :3012-3018
[6]   SI-29 NUCLEAR-MAGNETIC-RESONANCE STUDY OF THE STRUCTURE OF SILICON OXYCARBIDE GLASSES DERIVED FROM ORGANOSILICON PRECURSORS [J].
CORRIU, RJP ;
LECLERCQ, D ;
MUTIN, PH ;
VIOUX, A .
JOURNAL OF MATERIALS SCIENCE, 1995, 30 (09) :2313-2318
[7]  
GARVIE LAJ, 1994, AM MINERAL, V79, P411
[8]  
HAMMOND M, 1993, CERAM ENG SCI P, V14, P947
[9]  
KLEEBE HJ, 1996, P 5 WORLD C CHEM ENG
[10]  
MEYER C, DIGITALMICROGAPH 3 4