Thermal Decomposition of Chemically Precipitated Aluminum Hydroxide Nanopowder

被引：0
|
作者：
Dzidziguri, E. L. [1 ]
Vasilev, A. A. [1 ]
Ozherelkov, D. Yu. [1 ]
Pelevin, I. A. [1 ]
Zotov, B. O. [1 ]
Fedorenko, L. V. [1 ]
Gromov, A. A. [1 ]
机构：
[1] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia
来源：
INORGANIC MATERIALS-APPLIED RESEARCH | 2023年 / 14卷 / 03期
关键词：
aluminum oxide; thermal decomposition; phase transitions; thermogravimetric analysis; GAMMA-ALUMINA; MECHANICAL-PROPERTIES; METAL; CONSTRUCTION; MORPHOLOGY; POWDER;
D O I：
10.1134/S2075113323030139
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The processes of phase formation of aluminum oxide nanopowder during the thermal decomposition of chemically precipitated aluminum hydroxide are considered in detail. It is shown that precipitated aluminum hydroxide has a flake morphology with an average particle diameter of 5.5 nm and is characterized by a complex phase composition. According to the results of differential thermal analysis, it is found that freshly precipitated aluminum hydroxide consists of two phases, bayerite alpha-Al(OH)(3) and aluminum oxyhydroxide AlOOH, the thermal decomposition of which leads to the formation of gamma-Al2O3 with an equiaxed particle shape and an average size of 7 nm.
引用
收藏
页码：788 / 793
页数：6
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