Electron back scattered diffraction characterization of Sm(CoFeCuZr){sub z} magnets

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3565417· OSTI ID:21538257

Yonamine, T; Fukuhara, M; Archanjo, B S ^[1]; Missell, F P ^[2]

---

1. National Institute of Metrology, Standardization and Industrial Quality, Duque de Caxias, Rio de Janeiro 25250-020 (Brazil)
2. Centro de Ciencias Exatas e Tecnologia, Universidade de Caxias do Sul, Caxias do Sul, Rio Grande do Sul 95070-560 (Brazil)

In permanent magnets based on the Sm{sub 2}Co{sub 17} phase, the high coercivity depends on the presence of a complex microstructure, consisting of a Sm{sub 2}(Co,Fe){sub 17} cell phase, a cell boundary phase Sm(Co,Cu){sub 5}, and a Zr-rich platelet or lamellae phase. The aim of this work is to use electron back scatter diffraction (EBSD) in order to identify the different phases present in the isotropic magnets produced from cast alloys with the composition of Sm(Co{sub bal}Fe{sub 0.2}Cu{sub 0.1}Zr{sub x}){sub 8}, where x = 0, 0.02, or 0.06, and correlate them with the different phases observed in scanning electron microscopy (SEM) images. Due to the combination of careful surface preparation and high resolution microscopy, it was possible to observe the cellular structure characteristic of the 2:17 magnets in the SEM images. Until now, only transmission electron microscopy (TEM) had been used. Composition maps, energy dispersive spectroscopy (EDS), and EBSD measurements were used for doing the phase identification.

• OSTI ID: 21538257
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 7; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: DOI: 10.1063/1.3565417; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BACKSCATTERING
CHEMICAL ANALYSIS
COBALT ALLOYS
COERCIVE FORCE
COPPER ALLOYS
ELECTRON DIFFRACTION
ELECTRONS
IRON ALLOYS
MICROSTRUCTURE
NANOSTRUCTURES
PERMANENT MAGNETS
RESOLUTION
SAMARIUM ALLOYS
SCANNING ELECTRON MICROSCOPY
SPECTROSCOPY
SURFACES
TRANSMISSION ELECTRON MICROSCOPY
X RADIATION
ZIRCONIUM ALLOYS
ALLOYS
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
IONIZING RADIATIONS
LEPTONS
MAGNETS
MICROSCOPY
RADIATIONS
RARE EARTH ALLOYS
SCATTERING
TRANSITION ELEMENT ALLOYS