The influence of aluminum oxide on the heat resistance of the coatings based on the zirconium boride-silicon composite

被引：2
|
作者：
Ban'kovskaya, I. B. [1 ]
Sazonova, M. V. [1 ]
Kolovertnov, D. V. [1 ]
机构：
[1] Russian Acad Sci, Grebenshchikov Inst Silicate Chem, Nab Makarova 2, St Petersburg 199034, Russia
来源：
GLASS PHYSICS AND CHEMISTRY | 2016年 / 42卷 / 01期
关键词：
zirconium boride; silicon; aluminum oxide; vitreous melt; graphite; protection from oxidation; THERMAL-STABILITY; OXIDATION; SYSTEM; AIR;
D O I：
10.1134/S108765961601003X
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：
The process of the formation of coatings based on zirconium boride, silicon, and aluminum oxide on graphite by the thermal treatment of the mixtures of the initial components in air has been studied. During the chemical reactions, a vitreous melt encapsulating the particles of zirconium boride and silicon is formed, which provides high heat resistance of the material. The effect of the composition, temperature, and mode of heating on the kinetics of oxidation of graphite samples with the coatings during their thermal treatment at 1400A degrees C has been studied via the methods of thermogravimetric, thermal, and X-ray phase (XPA) analyses. The compositions of the coatings that effectively protect graphite from oxidation in air at temperatures of up to 1400A degrees C have been proposed based on the results of the study.
引用
收藏
页码：59 / 63
页数：5
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