Microstructure and mechanical performance of porous mullite ceramics added with TiO2

被引：26

作者：

Deng, Xiangong ^{[1
,2
]}

Zhang, Wanchun ^{[2
]}

Yin, Jiaqiang ^{[2
]}

Deng, Chaoheng ^{[2
]}

Zhang, Shaowei ^{[3
]}

Zhang, Haijun ^{[3
]}

Ran, Songlin ^{[1
]}

机构：

[1] Anhui Univ Technol, Minist Educ, Key Lab Met Emiss Reduct & Resources Recycling An, Maanshan 243002, Peoples R China

[2] Anhui Univ Technol, Sch Mat Sci & Engn, Key Lab Green Fabricat & Surface Technol Adv Met, Maanshan 243002, Peoples R China

[3] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Porous mullite ceramics; Columnar mullite; TiO2; additive; Mechanical performance; COAL FLY-ASH; HIGH-STRENGTH; FABRICATION; POROSITY; FOAMS;

D O I：

10.1016/j.ceramint.2019.12.078

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：

Porous mullite samples were manufactured using granular mullite powders as major materials, and TiO2 as the additive agent. Influences of TiO2 contents on rheological characteristics of slurries, and microstructure and bending strength at 25-1400 degrees C of final porous mullite products were investigated. Adding appropriate content of TiO2, a large amount of columnar mullite with mean length of 23.7 mu m and the length-to-diameter ratio of 6.7 was in-situ formed, which could improve the mechanical performance of the resultant porous samples. The bending strength at 25 degrees C of porous products containing 67% porosity fabricated by using 7 wt% TiO2 reached 12.5 MPa, and its bending strength at 1200 degrees C remained as high as 6.1 MPa.

引用

页码：8438 / 8443

页数：6

共 29 条

[1] In situ mullite foam fabrication using microwave energy [J].

Akpinar, S. ;

Kusoglu, I. M. ;

Ertugrul, O. ;

Onel, K. .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2012, 32 (04) :843-848

[2] Kinetic analysis of the heat resistance of ZrB2-SiC composites [J].

Ban'kovskaya, IB ;

Zhabrev, VA .

GLASS PHYSICS AND CHEMISTRY, 2005, 31 (04) :482-488

[3] Effects of firing temperature on the microstructures and properties of porous mullite ceramics prepared by foam-gelcasting [J].

Deng, X. G. ;

Wang, J. K. ;

Zhang, H. J. ;

Liu, J. H. ;

Zhao, W. G. ;

Huang, Z. ;

Zhang, S. W. .

ADVANCES IN APPLIED CERAMICS, 2016, 115 (04) :204-209

[4] Preparation of elongated mullite self-reinforced porous ceramics [J].

Deng, Xiangong ;

Wu, Yongwan ;

Wei, Tingting ;

Ran, Songlin ;

Huang, Liang ;

Zhang, Haijun ;

Li, Faling ;

Han, Lei ;

Ge, Shengtao ;

Zhang, Shaowei .

CERAMICS INTERNATIONAL, 2018, 44 (07) :7500-7508

[5] Foam-gelcasting preparation of high-strength self-reinforced porous mullite ceramics [J].

Deng, Xiangong ;

Ran, Songlin ;

Han, Lei ;

Zhang, Haijun ;

Ge, Shengtao ;

Zhang, Shaowei .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2017, 37 (13) :4059-4066

[6] Preparation and characterization of porous mullite ceramics via foam-gelcasting [J].

Deng, Xiangong ;

Wang, Junkai ;

Liu, Jianghao ;

Zhang, Haijun ;

Li, Faliang ;

Duan, Hongjuan ;

Lu, Lilin ;

Huang, Zhong ;

Zhao, Wanguo ;

Zhang, Shaowei .

CERAMICS INTERNATIONAL, 2015, 41 (07) :9009-9017

[7] Low-cost porous mullite ceramic membrane supports fabricated from kyanite by casting and reaction sintering [J].

Guo, Huishi ;

Li, Wenfeng ;

Ye, Fangbao .

CERAMICS INTERNATIONAL, 2016, 42 (04) :4819-4826

[8] Preparation of high strength porous mullite ceramics via combined foam-gelcasting and microwave heating [J].

Han, Lei ;

Deng, Xiangong ;

Li, Faliang ;

Huang, Liang ;

Pei, Yuantao ;

Dong, Longhao ;

Li, Saisai ;

Jia, Quanli ;

Zhang, Haijun ;

Zhang, Shaowei .

CERAMICS INTERNATIONAL, 2018, 44 (12) :14728-14733

[9] Microstructural evolution and densification behavior of porous kaolin-based mullite ceramic added with MoO3 [J].

Hou, Zhaoping ;

Liu, Cheng ;

Liu, Liangliang ;

Zhang, Shaowei .

CERAMICS INTERNATIONAL, 2018, 44 (15) :17914-17918

[10] Effect of La2O3 additives on the strength and microstructure of mullite ceramics obtained from coal gangue and γ-Al2O3 [J].

Ji, Haipeng ;

Fang, Minghao ;

Huang, Zhaohui ;

Chen, Kai ;

Xu, Youguo ;

Liu, Yan'gai ;

Huang, Juntong .

CERAMICS INTERNATIONAL, 2013, 39 (06) :6841-6846

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