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

页码：788 / 793

页数：6

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