Effect of Alumina-Coated Graphite (ACG) on the Microstructure and Mechanical Properties of Al2O3-C Refractories

被引：5
作者：
Xu, X. [1 ]
Li, Y. [1 ]
Wang, Q. [1 ]
Sang, S. [1 ]
Pan, L. [1 ]
机构：
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China
来源：
JOURNAL OF CERAMIC SCIENCE AND TECHNOLOGY | 2017年 / 8卷 / 04期
关键词：
Alumina-coated graphite; expanded graphite; microstructure; mechanical properties; MGO-C REFRACTORIES; EXPANDED GRAPHITE; GRAPHENE; OXIDE;
D O I：
10.4416/JCST2016-00079
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：
Alumina-coated graphite(ACG) was prepared by soaking expanded graphite (EG) in an AlCl3 solution withvacuum impregnation. The graphite was then filtered, dried and treated in a coke bed at 400 -1000 degrees C. TheACGwas incorporated into Al2O3-C refractories, partly or completely replacing EG. The results showed that the alumina coating on the graphite was effective and delayed the oxidation behavior of the expanded graphite. It also allowed the structure of the graphite to survive largely intact at high temperatures as it had been incorporated into the Al2O3-C refractories while there were fewer in situ-formed ceramic phases in the matrix, e. g. SiC whiskers. As a result, ACG-containing Al2O3-C refractories exhibited better thermal shock resistance than that of common Al2O3-C refractories.
引用
收藏
页码：455 / 462
页数：8
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