Synthesis and characterization of SiC/MC/C ceramics (M = Ti, Zr, Hf) starting from totally non-oxidic precursors

被引：44

作者：

Amorós, P ^{[1
]}

Beltran, D ^{[1
]}

Guillem, C ^{[1
]}

Latorre, J ^{[1
]}

机构：

[1] Univ Valencia, Inst Ciencia Mat, ICMUV, Valencia 46071, Spain

来源：

CHEMISTRY OF MATERIALS | 2002年 / 14卷 / 04期

关键词：

D O I：

10.1021/cm011200s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The reaction of poly(dimethylsilane) (PDMS) and poly(dimethylcarbosilane) (PCS) with bis(cyclopentadienyl)M dichloride CP2MCl2 (M = Ti, Zr, Hf) complexes has been used as a new route to obtain ceramic materials based on SiC-containing M. The reaction is completed at a relatively low temperature, 900 degreesC, yielding the corresponding amorphous SiC/MC ceramics which have been characterized by means of Si-29 MAS NMR. These amorphous materials have been treated at higher temperatures, 1350 degreesC, under a purified argon atmosphere, yielding partially crystallized products which have been studied by X-ray powder diffraction and Si-29 HAS NMR. The effect of the composition of the mixture of precursors is also studied in this work.

引用

页码：1585 / 1590

页数：6

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