Synthesis of the Precursor of Aluminum–Calcium Oxide Systems by Anodic Oxidation of Aluminum in Aqueous Solutions

Abstract

An aluminum oxide system is obtained by electrolysis with a soluble anode and by the subsequent thermal treatment of the precipitate. It is shown that this system can be modified with calcium oxide in the process of synthesis. The influence of the synthesis conditions (the anodic current density and the electrolyte composition) on the formation of finely dispersed particles of the aluminum–calcium systems is studied. The structure and properties of the powder particles obtained by the electrochemical method are studied using the methods of laser diffraction, X-ray diffraction analysis, and electron microscopy.