The production and characterisation of highly anisotropic PrFeCoB-type HDDR powders

Nicolas Cannesan; David Brown; Andrew Williams; Ivor Harris

doi:10.1016/S0304-8853(01)00212-8

The production and characterisation of highly anisotropic PrFeCoB-type HDDR powders

Nicolas Cannesan, David Brown, Andrew Williams, Ivor Harris

Metallurgy and Materials

Research output: Contribution to journal › Article

26 Citations (Scopus)

Abstract

A study of the processing of highly anisotropic HDDR powder and PTFE-bonded magnets with the composition Pr13.7Fe63.5Co16.7B6M0.1 (M=Zr or Nb) has been undertaken. These alloys were processed by an homogenising heat treatment for a range of times, and a subsequent HDDR treatment employing a range of disproportionation times. The optimum time for the homogenisation of the as-cast structure was found to be 20 h at 1100 degreesC, while the optimum disproportionation time in the HDDR treatment was found to be 10 min at 860 degreesC. Zr-additions appear to inhibit grain growth during the heat treatment process, whereas Nb-additions appeared to control more effectively the grain growth during the disproportionation and recombination stages of the HDDR process. (C) 2001 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	209-218
Number of pages	10
Journal	Journal of Magnetism and Magnetic Materials
Volume	233
Issue number	3
DOIs	https://doi.org/10.1016/S0304-8853(01)00212-8
Publication status	Published - 1 Aug 2001

Keywords

praseodymium
homogenisation
HDDR
anisotropy

Access to Document

10.1016/S0304-8853(01)00212-8

Cite this

@article{8c74ce897e3d441290ef3e6cdc68f0fe,

title = "The production and characterisation of highly anisotropic PrFeCoB-type HDDR powders",

abstract = "A study of the processing of highly anisotropic HDDR powder and PTFE-bonded magnets with the composition Pr13.7Fe63.5Co16.7B6M0.1 (M=Zr or Nb) has been undertaken. These alloys were processed by an homogenising heat treatment for a range of times, and a subsequent HDDR treatment employing a range of disproportionation times. The optimum time for the homogenisation of the as-cast structure was found to be 20 h at 1100 degreesC, while the optimum disproportionation time in the HDDR treatment was found to be 10 min at 860 degreesC. Zr-additions appear to inhibit grain growth during the heat treatment process, whereas Nb-additions appeared to control more effectively the grain growth during the disproportionation and recombination stages of the HDDR process. (C) 2001 Elsevier Science B.V. All rights reserved.",

keywords = "praseodymium, homogenisation, HDDR, anisotropy",

author = "Nicolas Cannesan and David Brown and Andrew Williams and Ivor Harris",

year = "2001",

month = aug,

day = "1",

doi = "10.1016/S0304-8853(01)00212-8",

language = "English",

volume = "233",

pages = "209--218",

journal = "Journal of Magnetism and Magnetic Materials",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - The production and characterisation of highly anisotropic PrFeCoB-type HDDR powders

AU - Cannesan, Nicolas

AU - Brown, David

AU - Williams, Andrew

AU - Harris, Ivor

PY - 2001/8/1

Y1 - 2001/8/1

N2 - A study of the processing of highly anisotropic HDDR powder and PTFE-bonded magnets with the composition Pr13.7Fe63.5Co16.7B6M0.1 (M=Zr or Nb) has been undertaken. These alloys were processed by an homogenising heat treatment for a range of times, and a subsequent HDDR treatment employing a range of disproportionation times. The optimum time for the homogenisation of the as-cast structure was found to be 20 h at 1100 degreesC, while the optimum disproportionation time in the HDDR treatment was found to be 10 min at 860 degreesC. Zr-additions appear to inhibit grain growth during the heat treatment process, whereas Nb-additions appeared to control more effectively the grain growth during the disproportionation and recombination stages of the HDDR process. (C) 2001 Elsevier Science B.V. All rights reserved.

AB - A study of the processing of highly anisotropic HDDR powder and PTFE-bonded magnets with the composition Pr13.7Fe63.5Co16.7B6M0.1 (M=Zr or Nb) has been undertaken. These alloys were processed by an homogenising heat treatment for a range of times, and a subsequent HDDR treatment employing a range of disproportionation times. The optimum time for the homogenisation of the as-cast structure was found to be 20 h at 1100 degreesC, while the optimum disproportionation time in the HDDR treatment was found to be 10 min at 860 degreesC. Zr-additions appear to inhibit grain growth during the heat treatment process, whereas Nb-additions appeared to control more effectively the grain growth during the disproportionation and recombination stages of the HDDR process. (C) 2001 Elsevier Science B.V. All rights reserved.

KW - praseodymium

KW - homogenisation

KW - HDDR

KW - anisotropy

UR - http://www.scopus.com/inward/record.url?scp=0035425728&partnerID=8YFLogxK

U2 - 10.1016/S0304-8853(01)00212-8

DO - 10.1016/S0304-8853(01)00212-8

M3 - Article

VL - 233

SP - 209

EP - 218

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 3

ER -

The production and characterisation of highly anisotropic PrFeCoB-type HDDR powders

Abstract

Keywords

Access to Document

Fingerprint

Cite this