REGULARITIES OF PYROLYTIC BORON-NITRIDE COATING FORMATION ON A GRAPHITE MATRIX

被引：33

作者：

ROZENBERG, AS

SINENKO, YA

CHUKANOV, NV

机构：

[1] USSR Academy of Sciences Institute of Chemical Physics, Chernogolovka

来源：

JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 20期

关键词：

D O I：

10.1007/BF00367825

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The kinetics and structure of chemical vapour-phase deposition of boron nitride ceramics on a graphite matrix from the mixture BCl3/NH3/N2 have been investigated for a wide range of conditions (temperature 1300-2100-degrees-C, pressure 130-2600 Pa, at varying partial pressures of the components). The growth-rate was found to vary non-linearly with the consumption rates of the reagents. The content of hexagonal components in the BN-ceramics rose, while the turbostrate microphase content diminished with temperature. The dependences of the concentrations of hexagonal, turbostratic and amorphous fractions in BN-ceramics on the reaction mixture composition and total pressure have been determined.

引用

页码：5528 / 5533

页数：6

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