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The results of studies of sintering of spinel porous ceramics using aluminum and magnesium oxides as initial components without sintering additives are presented. It is shown that the optimal burning temperature range for the production of materials with an open-cellular porous structure is 1700‒1730 °C. It has been established that the preliminary heat treatment of oxides significantly affects the mechanical characteristics of materials. Materials were obtained with an interconnected porosity of up to 85 % and a compressive strength of up to 1,0 MPa. Ill. 6. Ref. 25.

Effect of firing mode on the structure and properties of highly porous ceramic materials based on alyumomagnezia spinel