Crystallite size and magnetic properties of HDDR powders obtained from PrFeCoBNb alloys
Creators
- 1. Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil). Dept. de Metalurgia
Description
The first goal of this work involved the study of HDDR powders obtained from annealed alloys with the general formula: PrxFe77.9-xCo16B6Nb0.1 (x = 12; 12.5; 13; 13.5 and 14). The alloys were processed at desorption / recombination temperature of 840 deg C. The highest magnetic properties were obtained with 13.5 at. % Pr (Br= 1000mT and μ0iHc= 890mT). The alloy with a minimum praseodymium content (12 at. %) exhibited the lowest magnetic properties (Br= 350mT e iHc= 120mT). The second aim of the work involved the characterization of HDDR powders using X-ray diffraction for phase quantification and mean crystallite sizes determination of the hard magnetic phase. The processed powders were characterized by scanning electron microscopy (SEM). (author)
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47116486.pdf
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Additional details
Publishing Information
- Imprint Pagination
- 6 p.
- Report number
- INIS-BR--16584
Conference
- Title
- 7. International latin-american conference on powder technology
- Acronym
- PTECH 2009
- Dates
- 8-10 Nov 2009
- Place
- Atibaia, SP (Brazil)
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 47116486
- Subject category
- S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BORON ALLOYS; COBALT ALLOYS; HEAT TREATMENTS; HYDROGENATION; IRON ALLOYS; MAGNETIC PROPERTIES; MAGNETS; NIOBIUM ALLOYS; POWDERS; PRASEODYMIUM ALLOYS; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; CHEMICAL REACTIONS; COHERENT SCATTERING; DIFFRACTION; EQUIPMENT; PHYSICAL PROPERTIES; RARE EARTH ALLOYS; SCATTERING; TRANSITION ELEMENT ALLOYS