Electrical properties of iron powder-based composites encapsulated by the oxide coating

Autor:	A. K. Vetcher, K. I. Yanushkevich, G. A. Govor, A. I. Galyas
Rok vydání:	2020
Předmět:	Pressing Materials science Coating Electrical resistance and conductance Seebeck coefficient Magnon engineering Ferrite (magnet) engineering.material Conductivity Composite material Iron powder
Zdroj:	Doklady of the National Academy of Sciences of Belarus. 64:233-237
ISSN:	2524-2431 1561-8323
Popis:	The electrical characteristics of composite materials based on iron powders ASC 100.29 (Sweden) were investigated. The surface of powders is encapsulated by an insulating ferrite coating. The conductivity and the thermopower were studied, the cores were made by the pressing method, and then the samples were cut from the cores. The results show that the decrease in the electrical resistance with increasing temperature is due to a change in the contact between the grains in the sample. A change in the boundaries between grains (or domains) creates the conditions for formation of a new magnon, which affects the thermopower coefficient value. The research results can be used in the synthesis of composites with specified electromagnetic characteristics for practical applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4530598554adc1421f028302806f842f https://doi.org/10.29235/1561-8323-2020-64-2-233-237 Zobrazit plný text záznamu