Glass-Ceramic Precursors in B2O3-SiO2-MxOySystems (M- Ti, Zr, Cr) as a Source for Producing Fine-Dispersed Mixtures of High-Melting Carbides and Borides

被引：1

作者：

Kotsar, T. V. ^{[1
]}

Danilovich, D. P. ^{[1
]}

Ordan'yan, S. S. ^{[1
]}

机构：

[1] St Petersburg State Inst Technol Tech Univ, St Petersburg, Russia

来源：

REFRACTORIES AND INDUSTRIAL CERAMICS | 2020年 / 61卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

non-oxide high-melting compounds; glass-ceramic precursors; homogenization; carbothermal reduction; BORON-CARBIDE; CARBOTHERMAL SYNTHESIS; TITANIUM DIBORIDE; MICROSTRUCTURE; COMPOSITES;

D O I：

10.1007/s11148-020-00438-8

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：

A new approach to the homogenization of the reaction mixture is presented consisting in the creation of glass-ceramic precursors in oxide systems containing enough components for the joint synthesis of carbides and borides mixed at the molecular level. By the joint carbothermal reduction of glass-ceramic precursors in vacuum at 1600 degrees C fine mixtures in B4C-SiC-MB(2)systems (M-Ti, Cr, Zr) without or with an insignificant content of impurities were obtained. Due to the good solubility of titania in the silicate-borate melt the microstructure of the ternary B4C-SiC-TiB(2)sample is represented by boron carbide crystals up to 1 mu m in size surrounded by nanoparticles of 30 - 40 nm.

引用

页码：100 / 105

页数：6

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