Enhancement of coercivity in high remanence HDDR Nd-Fe-B powders

H. Nakamura; K. Kato; D. Book; S. Sugimoto; M. Okada; M. Homma

doi:10.1109/20.800496

Enhancement of coercivity in high remanence HDDR Nd-Fe-B powders

H. Nakamura, K. Kato, D. Book, S. Sugimoto, M. Okada, M. Homma

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

A new type of HDDR (Hydrogénation, Disproportionation, Desorption, Recombination) processing route, in which alloys are heated up under a low pressure of H2 for the disproportionate] stage, was found to be an effective way of obtaining high remanence Nd-Fe-B ternary powders, with no large decrease in coercivity (which was the problem with the previous HDDR processing route, in which the alloys were heated under vacuum). The alloys with 0. 5 % Ga addition exhibited high coercivities of 1. 0 MAm'1 with no degradation in remanence CBr = 1. 4T).

Original language	English
Pages (from-to)	3274-3276
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	35
Issue number	5 PART 2
DOIs	https://doi.org/10.1109/20.800496
Publication status	Published - 1999

Keywords

Anisotropic powder
HDDR
High coercivity
Nd-fe-b

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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title = "Enhancement of coercivity in high remanence HDDR Nd-Fe-B powders",

abstract = "A new type of HDDR (Hydrog{\'e}nation, Disproportionation, Desorption, Recombination) processing route, in which alloys are heated up under a low pressure of H2 for the disproportionate] stage, was found to be an effective way of obtaining high remanence Nd-Fe-B ternary powders, with no large decrease in coercivity (which was the problem with the previous HDDR processing route, in which the alloys were heated under vacuum). The alloys with 0. 5 % Ga addition exhibited high coercivities of 1. 0 MAm'1 with no degradation in remanence CBr = 1. 4T).",

keywords = "Anisotropic powder, HDDR, High coercivity, Nd-fe-b",

author = "H. Nakamura and K. Kato and D. Book and S. Sugimoto and M. Okada and M. Homma",

note = "Funding Information: 7331. This work was partly supported by the Grant-in-Aid for Scientific Research on Priority Areas A of {"}New Protium Function{"} and No. 10450252 from the Ministry of Education, Science, Sports and Culture, Japan.",

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AU - Nakamura, H.

AU - Kato, K.

AU - Book, D.

AU - Sugimoto, S.

AU - Okada, M.

AU - Homma, M.

N1 - Funding Information: 7331. This work was partly supported by the Grant-in-Aid for Scientific Research on Priority Areas A of "New Protium Function" and No. 10450252 from the Ministry of Education, Science, Sports and Culture, Japan.

PY - 1999

Y1 - 1999

N2 - A new type of HDDR (Hydrogénation, Disproportionation, Desorption, Recombination) processing route, in which alloys are heated up under a low pressure of H2 for the disproportionate] stage, was found to be an effective way of obtaining high remanence Nd-Fe-B ternary powders, with no large decrease in coercivity (which was the problem with the previous HDDR processing route, in which the alloys were heated under vacuum). The alloys with 0. 5 % Ga addition exhibited high coercivities of 1. 0 MAm'1 with no degradation in remanence CBr = 1. 4T).

AB - A new type of HDDR (Hydrogénation, Disproportionation, Desorption, Recombination) processing route, in which alloys are heated up under a low pressure of H2 for the disproportionate] stage, was found to be an effective way of obtaining high remanence Nd-Fe-B ternary powders, with no large decrease in coercivity (which was the problem with the previous HDDR processing route, in which the alloys were heated under vacuum). The alloys with 0. 5 % Ga addition exhibited high coercivities of 1. 0 MAm'1 with no degradation in remanence CBr = 1. 4T).

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KW - High coercivity

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Enhancement of coercivity in high remanence HDDR Nd-Fe-B powders

Abstract

Keywords

ASJC Scopus subject areas

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