Mechanochemical and Ceramic Synthesis of Cobalt Ferrite

• Published in: Glass and ceramics Vol. 79; no. 1-2; pp. 15 - 21
• Main Authors: Ptitsyna, K. O., Il’in, A. A., Rumyantsev, R. N., Sakharova, Yu. N.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-05-2022; Springer; Springer Nature B.V
• Subjects: Adsorption; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Cobalt; Cobalt ferrites; Cobalt oxalates; Composites; Diffraction; Glass; Iron compounds; Low temperature; Materials Science; Natural Materials; Oxalates; Solid phases; Synthesis; Thermal analysis; X-rays; iron oxalate; cobalt ferrite; cobalt oxalate; mechanochemical synthesis
• ISSN: 0361-7610; 1573-8515
• DOI: 10.1007/s10717-022-00446-9

The effect of mechanochemical activation on the formation of a cobalt ferrite phase from iron and cobalt oxalates was studied. X-ray phase, x-ray diffraction, and simultaneous thermal analysis, scanning electron microscopy, and the low-temperature nitrogen adsorption-desorption method were used to study the composition and properties of the resulting product. It was established that on solid-phase interaction of the initial components cobalt ferrite is formed at 1100°C. Preliminary mechanochemical activation of the initial components in a roll-ring vibratory mill makes it possible to reduce the temperature of cobalt ferrite synthesis to 400°C. The properties of cobalt ferrite can be improved by lowering its synthesis temperature. It is shown that CoFe
2
O
4
obtained by the mechanochemical method of synthesis has a more developed specific surface area and porous structure compared to cobalt ferrite obtained by solid-phase interaction of the initial components without pretreatment.