CHEMICAL CHARACTERIZATION OF SI-AL-C-O PRECURSOR AND ITS PYROLYSIS

被引：64

作者：

BABONNEAU, F

SORARU, GD

THORNE, KJ

MACKENZIE, JD

机构：

[1] UNIV TRENTO,DIPARTIMENTO INGN,I-38050 MESIANO,ITALY

[2] UNIV CALIF LOS ANGELES,DEPT MAT SCI & ENGN,LOS ANGELES,CA 90024

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 07期

关键词：

CARBOSILANES; POLYMERS; ALUMINUM; ALKOXIDE; PRECURSORS; NUCLEAR MAGNETIC-RESONANCE; SILICON-CARBIDE FIBER; ANGLE SPINNING NMR; POLYMER PRECURSOR; SIC/TIC CERAMICS; POLYTITANOCARBOSILANE; POLYCARBOSILANE; CONVERSION; POLYTYPES; PRODUCTS;

D O I：

10.1111/j.1151-2916.1991.tb07172.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：

Polycarbosilane was modified by reaction with an aluminum alkoxide to get a precursor for Si-Al-C-O ceramics. The precursor was essentially characterized by magic-angle spinning nuclear magnetic resonance (Si-29, Al-27, and C-13) and appeared as a dispersion of Al(OH)3-based particles in a polycarbosilane chain matrix. After the material was heat-treated under argon at 1500-degrees-C, X-ray diffraction showed that it crystallized mainly as SiC 2H. The presence of this rather unusual polytype for polycarbosilane-derived ceramics seemed to be related to the presence of aluminum atoms.

引用

页码：1725 / 1728

页数：4

共 21 条

[1] SI-29 MAS-NMR INVESTIGATION OF THE CONVERSION PROCESS OF A POLYTITANOCARBOSILANE INTO SIC-TIC CERAMICS [J].