Study of the effect of Zr-substitution on the HDDR characteristics of Nd-Fe-B-type alloys

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.619584· OSTI ID:566410

Kwon, H W ^[1]

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1. Pukyong National Univ., Pusan (Korea, Republic of). Dept. of Materials Science and Engineering

Alloys with compositions based on Nd{sub 16}Fe{sub 76{minus}x}B{sub 8}Zr{sub x} (where x = 0--2.0) have been studied to see the effect of Zr-substitution on the HDDR characteristic of the Nd-Fe-B-type alloys. The HDDR characteristics of the alloys were investigated by means of DTA, TPA and magnetic measurement. It has been found that a small substitution (0.1 at%) of Zr for Fe in the Nd-Fe-B-type alloy retards the disproportionation kinetics of the hydrogenated material. Desorption characteristic of the disproportionated materials has been found not to be affected significantly by the Zr-substitution. The Zr-substitution has been found to facilitate the recombination reaction. The peak coercivity of the HDDR treated material has been found to increase with increasing the Zr-content. It has also been revealed that the Zr-substitution suppressed the degradation of the coercivity due to the excessive grain growth of the recombined grains on prolonged recombination.

• Sponsoring Organization: Korea Ministry of Education (Korea)
• OSTI ID: 566410
• Report Number(s): CONF-970468--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 5Pt2 Vol. 33; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON ALLOYS
EXPERIMENTAL DATA
FABRICATION
IRON BASE ALLOYS
MAGNETIC PROPERTIES
METALLURGICAL EFFECTS
NEODYMIUM ALLOYS
ZIRCONIUM ADDITIONS