Preparation of alumina ceramic by κ-Al2O3

被引：8

作者：

Hao, Zijing ^{[1
]}

Wu, Bolin ^{[1
]}

Wu, Tingting ^{[1
]}

机构：

[1] Guilin Univ Technol, Coll Mat Sci & Engn, Guilin 541004, Guangxi, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Alumina ceramics; kappa-Al2O3; alpha-Al2O3; Cold isostatic pressing; AL2O3; MICROSTRUCTURE; FABRICATION; TRANSITION; POWDERS; BODIES;

D O I：

10.1016/j.ceramint.2018.01.235

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：

This work aims to use kappa-Al2O3 transition alumina to prepare alumina ceramics without cracks. It is found that the major reason for the cracking of kappa-Al2O3 sintered bodies formed by traditional wet molding process is the inner stress in green bodies rather than the volume reduction during the kappa-Al2O3 alpha-Al2O3 phase transformation. The cold isostatic pressing can be used to eliminate the inner stress generated in the green bodies, the sintered bodies have no cracks and possess the microstructure which is close to that of the alpha-Al2O3 ceramic products formed by wet molding process. Due to the fact that the calcining temperature of kappa-Al2O3 is much lower than that of alpha-Al2O3 (1050 degrees C in comparison with 1400 degrees C), the application of kappa-Al2O3 can lower the production cost significantly.

引用

页码：7963 / 7966

页数：4

共 19 条

[1] Pore growth during initial-stage sintering [J].

Akash, A ;

Mayo, MJ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1999, 82 (11) :2948-2952

[2] Linear Shrinkage of the ZTA Ceramic Cutting Inserts [J].

Ali, Afifah Mohd. ;

Abdullah, Norazharuddin Shah ;

Ratnam, Mani Maran ;

Ahmad, Zainal Arifin .

5TH INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN MATERIALS, MINERALS AND ENVIRONMENT (RAMM) & 2ND INTERNATIONAL POSTGRADUATE CONFERENCE ON MATERIALS, MINERAL AND POLYMER (MAMIP), 2016, 19 :879-883

[3] Mixture and pore volume fraction estimation in Al2O3/SiC ceramic cake using artificial neural networks [J].

Altinkok, N ;

Koker, R .

MATERIALS & DESIGN, 2005, 26 (04) :305-311

[4] Influence of co-doping on the sintering path and on the optical properties of a submicronic alumina material [J].

Bernard-Granger, Guillaume ;

Guizard, Christian ;

Addad, Ahmed .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (05) :1703-1706

[5] EFFECT OF MGO SOLUTE ON MICROSTRUCTURE DEVELOPMENT IN AL2O3 [J].

BERRY, KA ;

HARMER, MP .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1986, 69 (02) :143-149

[6] Transition alumina phases induced by heat treatment of boehmite: An X-ray diffraction and infrared spectroscopy study [J].

Boumaza, A. ;

Favaro, L. ;

Ledion, J. ;

Sattonnay, G. ;

Brubach, J. B. ;

Berthet, P. ;

Huntz, A. M. ;

Roy, P. ;

Tetot, R. .

JOURNAL OF SOLID STATE CHEMISTRY, 2009, 182 (05) :1171-1176

[7] Effect of inorganic acid on the phase transformation of alumina [J].

Chen, Ruoyu ;

Li, Yuanbing ;

Zhao, Yi ;

Li, Shujing ;

Xiang, Ruofei ;

Xu, Nana ;

Liu, Fang .

JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 699 :170-175

[8] Slag Resistance Mechanism of Lightweight Microporous Corundum Aggregate [J].

Fu, Lvping ;

Gu, Huazhi ;

Huang, Ao ;

Zhang, Meijie ;

Li, Zhengkun .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2015, 98 (05) :1658-1663

[9] Effects of foaming temperature on the preparation and microstructure of alumina foams [J].

Huang, Keke ;

Li, Yuanbing ;

Zhao, Yi ;

Li, Shujing ;

Li, Yawei ;

Sang, Shaobai .

MATERIALS LETTERS, 2016, 165 :19-21

[10] Plasma spray synthesis of nanomaterial powders and deposits [J].

Karthikeyan, J ;

Berndt, CC ;

Tikkanen, J ;

Reddy, S ;

Herman, H .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (02) :275-286

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