ISSN 2594-5327
53º Congresso anual — Vol. 53 , num. 1 (1998)
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Sintered permanent magnets of PrFeBCu-type have been prepared using the hydrogen decrepitation (HD) process. The relationships between processing conditions and magnetic properties have been studied. Post sintering heat treatment by annealing the Pr₁₇Fe₇₆.₅B₅Cu₁.₅ as-sintered samples at 1000ºC has been shown to be beneficial for increasing the intrinsic coercivity. For a specific processing condition the intrinsic coercivity double with this high temperature heat treatment. The increase in the coercivity has been partially attributed to the diminution in the amount of a 2/17-type phase. The possible role of this phase on the coercivity behaviour of sintered RE-Fe-B-Cu (RE = Nd and Pr) permanent magnets has also been discussed.
Sintered permanent magnets of PrFeBCu-type have been prepared using the hydrogen decrepitation (HD) process. The relationships between processing conditions and magnetic properties have been studied. Post sintering heat treatment by annealing the Pr₁₇Fe₇₆.₅B₅Cu₁.₅ as-sintered samples at 1000ºC has been shown to be beneficial for increasing the intrinsic coercivity. For a specific processing condition the intrinsic coercivity double with this high temperature heat treatment. The increase in the coercivity has been partially attributed to the diminution in the amount of a 2/17-type phase. The possible role of this phase on the coercivity behaviour of sintered RE-Fe-B-Cu (RE = Nd and Pr) permanent magnets has also been discussed.
Palavras-chave
Permanent Magnets, Hydrogen Decrepitation Process, Rare Earth-Fe-B Magnets
Permanent Magnets, Hydrogen Decrepitation Process, Rare Earth-Fe-B Magnets
Como citar
Takishi, Hidetoshi; Lima, Luis Filipe Carvalho Pedroso de; Faria, Rubens Nunes de; Harris, Ivor Rex.
MAGNETIC PROPERTIES OF SINTERED Pr-Fe-B-Cu HD MAGNETS,
p. 1490-1496.
In: 53º Congresso anual,
Belo Horizonte, Brasil,
1998.
ISSN: 2594-5327, DOI 10.5151/2594-5327-C00446
