THE POLYCARBOSILANE-TO-SIXC1-X CONVERSION STUDIED BY INELASTIC NEUTRON-SCATTERING AND INFRARED-ABSORPTION

被引：16

作者：

SUZUYA, K ^{[1
]}

SHIBATA, K ^{[1
]}

OKAMURA, K ^{[1
]}

SUZUKI, K ^{[1
]}

机构：

[1] UNIV OSAKA PREFECTURE,COLL MET ENGN,SAKAI,OSAKA 591,JAPAN

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1992年 / 150卷 / 1-3期

关键词：

D O I：

10.1016/0022-3093(92)90132-4

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 (PC) is a precursor which is converted to SixC1-x fibers by pyrolysis in an inert gas atmosphere. The changes in the atomic vibrational spectrum during the conversion process from PC to SixC1-x have been examined by means of inelastic neutron scattering (INS) and infrared absorption (IR). The existence of transverse-optical(TO)- and longitudinal-optical(LO)-like phonon modes due to amorphous SiC clusters was established in the original and pyrolyzed PC by INS measurements. After pyrolyzing at 700-800-degrees-C, these modes appear distinctly around 730 and 930 cm-1, respectively, in the INS spectra. Pyrolysis at 1000-degrees-C makes these TO- and LO-like phonon modes sharper.

引用

页码：255 / 259

页数：5

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