Study of the influence of alumina on the modification of corundum-carbon composites

被引：0
|
作者：
Logvinkov, S. M. [1 ]
Borysenko, O. M. [2 ]
Ivashura, A. A. [1 ]
Shabanova, H. M. [2 ]
Shumejko, V. M. [2 ]
Korohodska, A. M. [2 ]
机构：
[1] Simon Kuznets Kharkiv Natl Univ Econ, 9-a pr-t Nauky, UA-61166 Kharkiv, Ukraine
[2] Natl Tech Univ, Kharkiv Polytech Inst, 2 Kyrpychova str, UA-61002 Kharkiv, Ukraine
来源：
FUNCTIONAL MATERIALS | 2023年 / 30卷 / 04期
关键词：
alumina; corundum-carbon composites; X-ray fluorescence analysis; electron microscopy;
D O I：
10.15407/fm30.04.541
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A comprehensive study of imported alumina "Salox ALO DN-23" was carried out using the methods of infrared spectroscopy, X-ray fluorescence analysis and electron microscopy, which made it possible to obtain a number of important results. It is shown that the studied alumina contains a significant amount of beta-alumina, and the presence of calcium-containing impurities in it activates low-temperature reaction sintering of the composite material with the manifestation of an antishrinkage effect, a decrease in open porosity and pore size. Such features contribute to an increase in strength, reduce gas permeability and prevent carbon oxidation, increasing the efficiency of pyrolysis. Experimental verification of the prototypes of corundum-carbon composite using the studied alumina "Salox ALO DN-23" confirmed the predicted effects.
引用
收藏
页码：541 / 548
页数：8
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