Effect of submicron spinel powders on the microstructure evolution and properties of alumina-based refractory castables

被引：9
作者：
Chen, Pingan [1 ]
Wang, Yulong [1 ]
Li, Xiangcheng [1 ]
Zhu, Boquan [1 ]
机构：
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2017年 / 14卷 / 04期
基金：
中国国家自然科学基金;
关键词：
corrosion; corrosion resistance; mechanical properties; microstructure; shock; shock resistance; MECHANICAL-PROPERTIES; CALCIUM HEXALUMINATE; CEMENT; COMPOSITES; RESISTANCE; AL2O3-MGO; CORROSION; STRENGTH; MGAL2O4;
D O I：
10.1111/ijac.12701
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 physical properties, including flow value, apparent porosity, and mechanical strength, increased significantly with submicron spinel contents in this study. The excellent physical properties can be attributed to the close-packed microstructure and high bonding strength between spinel and aggregates/matrix. Additionally, the submicron spinel powders promoted the formation of tabular CA(6) grains that generated a cross-linked structure and enhanced the mechanical properties. The microstructures of corroded castables suggested that submicron spinel powders contributed to the formation of a continuous and thick spinel layer at the slag-refractory interface and subsequently improved the slag resistance of the castables.
引用
收藏
页码：748 / 758
页数：11
相关论文
共 22 条
[11]   Effect of spinel content on the properties of magnesia-spinel composite refractory [J].
Ghosh, A ;
Sarkar, R ;
Mukherjee, B ;
Das, SK .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2004, 24 (07) :2079-2085
[12]   Transformation of the geopolymer gels to crystalline bonds in cold-setting refractory concretes: Pore evolution, mechanical strength and microstructure [J].
Kamseu, Elie ;
Djangang, Chantale ;
Veronesi, Paolo ;
Fernanda, Andreola ;
Melo, Uphie Chinje ;
Sglavo, Vincenzo Mario ;
Leonelli, Cristina .
MATERIALS & DESIGN, 2015, 88 :336-344
[13]   Effect of spinel content on hot strength of alumina-spinel castables in the temperature range 1000-1500°C [J].
Ko, YC ;
Chan, CF .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1999, 19 (15) :2633-2639
[14]  
Ko YC, 2000, J AM CERAM SOC, V83, P2333
[15]   Microstructural analysis of corroded alumina-spinel castable refractories [J].
Korgul, P ;
Wilson, DR ;
Lee, WE .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1997, 17 (01) :77-84
[16]  
MORI J, 1990, AM CERAM SOC BULL, V69, P1172
[17]   Effect of preformed and in situ spinels on microstructure and properties of a low cement refractory castable [J].
Mukhopadhyay, S ;
Das Poddar, PK .
CERAMICS INTERNATIONAL, 2004, 30 (03) :369-380
[18]   The impact of pre-formed and in situ spinel formation on the physical properties of cement-bonded high alumina refractory castables [J].
Sako, E. Y. ;
Braulio, M. A. L. ;
Brant, P. O. ;
Pandolfelli, V. C. .
CERAMICS INTERNATIONAL, 2010, 36 (07) :2079-2085
[19]  
Sarpoolaky H, 2001, J AM CERAM SOC, V84, P426
[20]   Al2O3-based binders for corrosion resistance optimization of Al2O3-MgAl2O4 and Al2O3-MgO refractory [J].
Tomba Martinez, A. G. ;
Luz, A. P. ;
Braulio, M. A. L. ;
Pandolfelli, V. C. .
CERAMICS INTERNATIONAL, 2015, 41 (08) :9947-9956
123