LASER SYNTHESIS AND CRYSTALLOGRAPHIC CHARACTERIZATION OF ULTRAFINE SIC POWDERS

被引：40

作者：

FANTONI, R ^{[1
]}

BORSELLA, E ^{[1
]}

PICCIRILLO, S ^{[1
]}

CECCATO, R ^{[1
]}

ENZO, S ^{[1
]}

机构：

[1] DIPARTIMENTO CHIM FIS,I-30123 VENICE,ITALY

来源：

JOURNAL OF MATERIALS RESEARCH | 1990年 / 5卷 / 01期

关键词：

D O I：

10.1557/JMR.1990.0143

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High purity ultrafine SiC powders have been produced from gas phase reactants (SiH4 C2H2) in a CO2 laser induced process.The flow reactor designed to operate with a medium power (10-50 W) continuous wave CO2 laser source is described. The mechanism of gas phase reactions involved has been investigated by means of on-line optical diagnostics. Powders produced have been characterized by means of conventional chemical and spectroscopic methods. The x-ray results point out a growth mechanism by coalescence i.e. whole islands move in the flame to take part in binary collisions analogously to that observed for particles produced by inert gas evaporation. © 1990, Materials Research Society. All rights reserved.

引用

页码：143 / 150

页数：8

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