Synthesis of magnetocaloric LaFe11.6Si1.4 alloy by spark plasma sintering

Autor:	G. Kerridge, Ian M. Reaney, N. A. Morley, W.M. Rainforth, P. Shamba
Rok vydání:	2017
Předmět:	History Materials science Annealing (metallurgy) Alloy engineering Magnetic refrigeration Analytical chemistry Spark plasma sintering engineering.material Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 903:012041
ISSN:	1742-6596 1742-6588
Popis:	LaFe11.6Si1.4 alloys have been successfully fabricated by spark plasma sintering (SPS). An annealing study of the SPS LaFe11.6Si1.4 alloys at different temperatures ranging from 1373 to 1523 K for annealing times from 30 minutes to 72 hours was carried out. This annealing study showed that LaFe11.6Si1.4 samples annealed at 1473K (for annealing times between 30 minutes and 6 hours) have a significantly higher amount of the NaZn13-type phase compared to samples annealed at other temperatures. Thus the critical annealing temperature which enhances the formation of the NaZn13-type phase in SPS LaFe11.6Si1.4 compounds is 1473K. A second study investigated the effect of different particle sizes of the starting powders on the formation of the NaZn13-type phase. This study found that the samples synthesized using larger sized powder particles exhibited a significantly higher amount of the NaZn13-type phase compared to samples synthesized using smaller sized powder particles, for the same heat treatment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9b584062dede7de57d9e72df027c3b98 https://doi.org/10.1088/1742-6596/903/1/012041 Zobrazit plný text záznamu