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Comparative investigation of several types of γ-Fe2O3 ferro-powders by the methods of thermal analysis

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Abstract

Commercial γ-Fe2O3 ferro-powders obtained by the sulphate technology, have been compared by means of thermal analysis. Depending on the technology, each type of γ-F2O3 was found to be characterized by certain thermal transformation sequence. Thermal analysis and data systematisation allowed to find criteria for the qualification of γ- Fe2O3 particles. LKN ferropowders were found to have more disbalanced surface properties and chemical composition than PERK and GX ferro-powders.

Zusammenfassung

Mittels Thermoanalyse wurden kommerzielle, mit der Sulfattechnologie erhaltene γ-Fe2O3 Ferropulver untereinander verglichen. In Abhängigkeit von der Technologie kann jeder γ-Fe2O3-Typ durch gewisse thermische Umwandlungsfolge charakterisiert werden. Thermoanalyse und Datensystematisierung ermöglichten es, Kriterien zur Qualifizierung von γ-Fe2O3 Partikeln zu finden. Man fand, daß LKN Ferropulver mehr unausgewogene Oberflächeneigenschaften und chemische Zusammensetzungen besitzt als PERK- und GX-Ferropulver.

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Chuvaev, V.F., Karabasheva, N.A., Cherednichenko, A.G. et al. Comparative investigation of several types of γ-Fe2O3 ferro-powders by the methods of thermal analysis. Journal of Thermal Analysis 38, 1071–1081 (1992). https://doi.org/10.1007/BF01979170

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