SiC fines effects on the microstructure and properties of bauxite-based low-cement refractory castables

被引：5
|
作者：
Mavahebi, S. [1 ]
Bavand-vandchali, M. [1 ]
Nemati, A. [2 ]
机构：
[1] Islamic Azad Univ, Dept Mat Engn, Sci & Res Branch, Tehran, Iran
[2] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
来源：
CERAMICS INTERNATIONAL | 2019年 / 45卷 / 13期
关键词：
Bauxite-based LCC; SiC; Microstructure; Refractories; Mechanical properties; MECHANICAL-PROPERTIES; TEMPERATURE;
D O I：
10.1016/j.ceramint.2019.05.161
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：
In the present paper, the effect of silicon carbide (SiC) fines was studied on the phase and microstructural properties of bauxite-based low-cement refractory castables (LCC) at different firing temperatures. XRD and SEM techniques were employed to evaluate phase and microstructure analysis, and physical/mechanical properties were measured according to standard methods. The results showed that the oxidation of SiC particles related to the oxygen partial pressure and active/passive oxidation behavior of SiC fines could markedly affect the microstructure and properties of bauxite-based LCC fired at high temperatures. Despite the negative influence of addition of SiC fines on cold mechanical strength, its usage up to 6 wt% could greatly improve the thermomechanical properties of LCC refractories due to increasing of matrix refractoriness.
引用
收藏
页码：16338 / 16346
页数：9
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