Preparation of Superfine Alumina Powders via Hydrothermal Method

Jie Guang Song; Rui Hua Wang; Xiu Qin Wang; Ming Han Xu; Ming Liang Ma

doi:10.4028/www.scientific.net/KEM.726.184

Paper Titles

Influence of Synthesis Process on Coated Properties of Al(OH)₃-Y(OH)₃/ZrB₂ Composite Powders
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Rheological Properties and Ceramization Mechanism of ZrO₂Preceramic Solution
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Research on Optical Property of Black-Colored Zirconia Ceramics by Photoluminescence, Raman and Visible Reflectivity Spectra
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Microstructures and Mechanical Properties of Y₂O₃ Ceramics
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Preparation of Superfine Alumina Powders via Hydrothermal Method
p.184

Densification Mechanism of Al₂O₃/Al Metallic Ceramics Prepared via Powder Metallurgy Method
p.189

Mechanism of Controlled Pore Structure of Quartz Pore Gradient Materials
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Synthesis of Silica Aerogel Using Silica Sol by Ambient Drying Method
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Synthesis and Characterization of Pd/Ag/SiO₂ Nano-Composite Materials
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 726Preparation of Superfine Alumina Powders via...

Preparation of Superfine Alumina Powders via Hydrothermal Method

Abstract:

Superfine alumina has various excellent performance, superfine aluminum often used in metallurgy, aerospace, microelectronics and medicine, so the study of alumina has become a hot research at home and abroad, superfine alumina powder the body needs are also increasing. In this paper, superfine alumina powder were prepared by hydrothermal method, and to study the preparation process. The results show that the fibrous alumina particles gradually becomes granular with the increase of pH of the reaction, pH value of 9 to get a uniform particle size distribution and an average size of small powder particles. As the increasing calcination temperature, the alumina particles gradually grow, the homogeneous superfine particulate alumina powders is obtained under calcination temperature at 950¡æ. The better preferred process is that alkali molar ratio of 1:3, a concentration of 0.3mol/L, the reaction temperature at 200°C, calcination temperature of 950°C.

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Periodical:

Key Engineering Materials (Volume 726)

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184-188

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https://doi.org/10.4028/www.scientific.net/KEM.726.184

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Online since:

January 2017

Authors:

Jie Guang Song*, Rui Hua Wang, Xiu Qin Wang, Ming Han Xu, Ming Liang Ma

Keywords:

Alumina, Calcination Temperature, Hydrothermal Method, Superfine Powder

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