A new generation of gas atomized powder with improved levels of energy product and processability

D. J. Branagan; T. A. Hyde; C. H. Sellers; L. H. Lewis

doi:10.1109/20.539502

A new generation of gas atomized powder with improved levels of energy product and processability

D. J. Branagan
, T. A. Hyde
, C. H. Sellers
, L. H. Lewis

Materials and Fuels Complex

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

9 Scopus citations

Abstract

New alloy compositions have been developed which allow commercially significant levels of hard magnetic properties (>10 MGOe) to be produced by inert gas atomization (IGA). Improvements in magnetic properties are a result of altering the quenching characteristics of the liquid melt by alloying with simultaneous additions of Ti and C. IGA of previous alloy compositions produced powders in an underqucnched condition which resulted in inferior hard magnetic properties. In this new generation of IGA alloys, powders are produced in an overquenched condition which results in a nanocrystalline grain structure after crystallization. This extremely fine structure allows the development of a domain structure which is very similar to optimally quenched meltspun ribbons. Amorphous or partially crystalline structures were verified in powder particles up to 100 μm by magnetic, thermal, and structural experimental methods.

Original language	English
Pages (from-to)	5097-5099
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	32
Issue number	5 PART 2
DOIs	https://doi.org/10.1109/20.539502
State	Published - 1996

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10.1109/20.539502

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title = "A new generation of gas atomized powder with improved levels of energy product and processability",

abstract = "New alloy compositions have been developed which allow commercially significant levels of hard magnetic properties (>10 MGOe) to be produced by inert gas atomization (IGA). Improvements in magnetic properties are a result of altering the quenching characteristics of the liquid melt by alloying with simultaneous additions of Ti and C. IGA of previous alloy compositions produced powders in an underqucnched condition which resulted in inferior hard magnetic properties. In this new generation of IGA alloys, powders are produced in an overquenched condition which results in a nanocrystalline grain structure after crystallization. This extremely fine structure allows the development of a domain structure which is very similar to optimally quenched meltspun ribbons. Amorphous or partially crystalline structures were verified in powder particles up to 100 μm by magnetic, thermal, and structural experimental methods.",

author = "Branagan, \{D. J.\} and Hyde, \{T. A.\} and Sellers, \{C. H.\} and Lewis, \{L. H.\}",

note = "Funding Information: The authors would like to thank V. Panchanathan at Magnlequench International for the supplying of the alloys used in this study. INEL work was supported through the Long-Term Research Initiative Program under DOE Idaho Operations Ofice Contract No. DE-AC07-94ID13223. Research performed at BNL was under the auspices of the U.S. Department of Energy, Division of Materials Sciences, Office of Basic Energy Sciences under contract No. DE-AC02-76CH000 16.",

year = "1996",

doi = "10.1109/20.539502",

language = "English",

volume = "32",

pages = "5097--5099",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "5 PART 2",

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TY - JOUR

T1 - A new generation of gas atomized powder with improved levels of energy product and processability

AU - Branagan, D. J.

AU - Hyde, T. A.

AU - Sellers, C. H.

AU - Lewis, L. H.

N1 - Funding Information: The authors would like to thank V. Panchanathan at Magnlequench International for the supplying of the alloys used in this study. INEL work was supported through the Long-Term Research Initiative Program under DOE Idaho Operations Ofice Contract No. DE-AC07-94ID13223. Research performed at BNL was under the auspices of the U.S. Department of Energy, Division of Materials Sciences, Office of Basic Energy Sciences under contract No. DE-AC02-76CH000 16.

PY - 1996

Y1 - 1996

N2 - New alloy compositions have been developed which allow commercially significant levels of hard magnetic properties (>10 MGOe) to be produced by inert gas atomization (IGA). Improvements in magnetic properties are a result of altering the quenching characteristics of the liquid melt by alloying with simultaneous additions of Ti and C. IGA of previous alloy compositions produced powders in an underqucnched condition which resulted in inferior hard magnetic properties. In this new generation of IGA alloys, powders are produced in an overquenched condition which results in a nanocrystalline grain structure after crystallization. This extremely fine structure allows the development of a domain structure which is very similar to optimally quenched meltspun ribbons. Amorphous or partially crystalline structures were verified in powder particles up to 100 μm by magnetic, thermal, and structural experimental methods.

AB - New alloy compositions have been developed which allow commercially significant levels of hard magnetic properties (>10 MGOe) to be produced by inert gas atomization (IGA). Improvements in magnetic properties are a result of altering the quenching characteristics of the liquid melt by alloying with simultaneous additions of Ti and C. IGA of previous alloy compositions produced powders in an underqucnched condition which resulted in inferior hard magnetic properties. In this new generation of IGA alloys, powders are produced in an overquenched condition which results in a nanocrystalline grain structure after crystallization. This extremely fine structure allows the development of a domain structure which is very similar to optimally quenched meltspun ribbons. Amorphous or partially crystalline structures were verified in powder particles up to 100 μm by magnetic, thermal, and structural experimental methods.

UR - https://www.scopus.com/pages/publications/0030246010

U2 - 10.1109/20.539502

DO - 10.1109/20.539502

M3 - Article

AN - SCOPUS:0030246010

SN - 0018-9464

VL - 32

SP - 5097

EP - 5099

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 5 PART 2

ER -

A new generation of gas atomized powder with improved levels of energy product and processability

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