Evaluation of Mean Crystallite Size on Magnetic Powder by Scanning Electron Microscopy and Synchrotron Diffractometry - Materials Sciences and Applications

MSA > Vol.5 No.8, June 2014

Volume 5, Issue 8 (June 2014)

ISSN Print: 2153-117X ISSN Online: 2153-1188

Google-based Impact Factor: 0.97 Citations

Evaluation of Mean Crystallite Size on Magnetic Powder by Scanning Electron Microscopy and Synchrotron Diffractometry ()

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Download as PDF (Size: 2147KB) PP. 504-511

DOI: 10.4236/msa.2014.58055 3,321 Downloads 4,316 Views Citations

Author(s)

Eguiberto Galego, Marilene Morelli Serna, Rubens Nunes de Faria Junior

Affiliation(s)

Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN, S?o Paulo, Brazil.

ABSTRACT

This paper presents the results of investigations carried out with Pr-based magnetic powders. The magnetically hard powders were produced from homogenised alloys using a high temperature hydrogen pulverization process. Alloys and powders were investigated by scanning electron microscopy and by energy dispersive X-ray analysis. Mean crystallite size of the pulverized material was estimated using synchrotron powder diffractometry and the Scherrer method. A comparison between these two investigation techniques has been carried out. The effects of copper on the properties of the magnetic powders have been studied. It has been shown that the addition of this alloying element had a marked effect on the microstructure of the powders.

KEYWORDS

Rare Earth Alloys, Magnetic Powders, Hydrides, Synchrotron Radiation

Share and Cite:

Galego, E. , Serna, M. and Faria Junior, R. (2014) Evaluation of Mean Crystallite Size on Magnetic Powder by Scanning Electron Microscopy and Synchrotron Diffractometry. Materials Sciences and Applications, 5, 504-511. doi: 10.4236/msa.2014.58055.

Cited by

[1]	Crystallographic parameters of magnetic Pr 2 Fe 14− x Co x B-type alloys determined using anomalous x-ray diffraction with synchrotron radiation
	Journal of Magnetism and Magnetic Materials, 2017

[2]	Supercapacitor Application of Powder Prepared Using the Hydrogenation Disproportionation Desorption and Recombination (HDDR) Process in Graphene Oxide
	Materials Science Forum, 2017

[3]	Crystallographic parameters of magnetic Pr2Fe14− xCoxB-type alloys determined using anomalous x-ray diffraction with synchrotron radiation
	Journal of Magnetism and Magnetic Materials, 2017

[4]	Obtenção de ligas magnéticas à base de Pr-Fe-B por resfriamento super-rápido para a fabricação de ímãs permanentes de terras-raras

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