Preparation of ultrarine boron nitride powders by self-propagating high-temperature synthesis

被引：20

作者：

Borovinskaya, IP ^{[1
]}

Ignat'eva, TI ^{[1
]}

Vershinnikov, VI ^{[1
]}

Khurtina, GG ^{[1
]}

Sachkova, NV ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Struct Macrokinet & Mat Res Problems, Chernogolovka 142432, Moscow Oblast, Russia

来源：

INORGANIC MATERIALS | 2003年 / 39卷 / 06期

关键词：

Particle Size; Combustion; Boron; Hexagonal; Cool Rate;

D O I：

10.1023/A:1024097119257

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The possibility of preparing ultrafine boron nitride powders by self-propagating high-temperature synthesis (SHS) is examined. The results demonstrate that, by varying SHS conditions (starting-mixture composition, combustion rate, cooling rate, and intermediate grinding time), one can control the morphology particle size of the resultant hexagonal BN powder. Systematic data are presented on the chemical dispersion of SHS products for separating nanometer-sized particles. The effect of chemical dispersion (composition of the dispersion medium, process temperature, and dispersion time) on the particle size, morphology, and chemical and phase compositions of boron nitride powders is analyzed. Hexagonal boron nitride powders are obtained with a purity of 99.5+%, particle size of 0. 1-0.2 mum, and specific surface of up to 65 m(2)/g.

引用

页码：588 / 593

页数：6

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