Evolution of stable and metastable phases and coercivity in rare-earth-rich alloys of the Fe-Nd and Fe-Pr systems

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/20.104818· OSTI ID:5877903

Cabral, F A.O. ^[1]; Gama, S ^[2]

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1. Dept. de Fisica, UFRN, 59075 Natal, Rio Grande do Norte (BR)
2. Inst. de Fisica Gleb Wataghin, DFESCM, Univ. Estadual de Campinas, C.P. 6165, 13081 Campinas, Sao Paulo (BR)

The authors have studied eutectic alloys of the Fe-Nd and Fe-Pr systems regarding their magnetic behavior in the as-cast state and heat-treated at 600 C for different periods. In both systems the initial precipitation of a metastable phase is observed. This phase transforms into Fe{sub 17}Nd{sub 2} and this finally into a second phase with Fe{sub 17}Nd{sub 5} stoichiometry that is stable. For the Fe-Pr system the precipitation of two metastable phases that transform into the stable Fe{sub 17}Pr{sub 2} is observed. The authors have also measured the influence of these transformations on the coercivity of these alloys.

• OSTI ID: 5877903
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA), Vol. 26:5; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON ALLOYS
PHASE TRANSFORMATIONS
NEODYMIUM ALLOYS
PRASEODYMIUM ALLOYS
BINARY ALLOY SYSTEMS
COERCIVE FORCE
MAGNETIC PROPERTIES
METASTABLE STATES
STOICHIOMETRY
ALLOY SYSTEMS
ALLOYS
ENERGY LEVELS
EXCITED STATES
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360204 - Ceramics
Cermets
& Refractories- Physical Properties