학술논문
Features of High-Strength Composite Material Structure Creation.
Document Type
Article
Source
Subject
*STRENGTH of materials
*CRYSTAL structure
*COMPOSITE materials
*CORUNDUM
*POLYCRYSTALS
*FIBERS
*SOL-gel processes
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Language
ISSN
1083-4877
Abstract
The basis of technology proposed is use of a sol-gel method for preventing polycrystalline corundum fiber from crystallization during heating to high temperature and for low-temperature synthesis of prescribed phases in a corundum matrix with the aim of improving the operating properties of composite materials based on corundum. As a result of firing a charge based on corundum powder modified with tetraethoxysilane and polycrystalline corundum fiber modified with ethylsilicate-32 at 1360°C materials are created with very good strength properties. The materials exhibit electrical insulation properties and are stable in ionized gas streams at the level of known analogs as a result of creating self-reinforced mullite and β-SiC corundum matrix, reinforced with polycrystalline fiber and rapidly sintered due to presence of silicon oxynitride. [ABSTRACT FROM AUTHOR]