Atomization methods for forming magnet powders
- Idaho Falls, ID
The invention encompasses methods of utilizing atomization, methods for forming magnet powders, methods for forming magnets, and methods for forming bonded magnets. The invention further encompasses methods for simulating atomization conditions. In one aspect, the invention includes an atomization method for forming a magnet powder comprising: a) forming a melt comprising R.sub.2.1 Q.sub.13.9 B.sub.1, Z and X, wherein R is a rare earth element; X is an element selected from the group consisting of carbon, nitrogen, oxygen and mixtures thereof; Q is an element selected from the group consisting of Fe, Co and mixtures thereof; and Z is an element selected from the group consisting of Ti, Zr, Hf and mixtures thereof; b) atomizing the melt to form generally spherical alloy powder granules having an internal structure comprising at least one of a substantially amorphous phase or a substantially nanocrystalline phase; and c) heat treating the alloy powder to increase an energy product of the alloy powder; after the heat treatment, the alloy powder comprising an energy product of at least 10 MGOe. In another aspect, the invention includes a magnet comprising R, Q, B, Z and X, wherein R is a rare earth element; X is an element selected from the group consisting of carbon, nitrogen, oxygen and mixtures thereof; Q is an element selected from the group consisting of Fe, Co and mixtures thereof; and Z is an element selected from the group consisting of Ti, Zr, Hf and mixtures thereof; the magnet comprising an internal structure comprising R.sub.2.1 Q.sub.13.9 B.sub.1.
- Research Organization:
- Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
- DOE Contract Number:
- AC07-94ID13223
- Assignee:
- Lockheed Martin Idaho Technologies Company (Idaho Falls, ID)
- Patent Number(s):
- US 6022424
- OSTI ID:
- 872844
- Country of Publication:
- United States
- Language:
- English
Developing rare earth permanent magnet alloys for gas atomization
|
journal | September 1996 |
Altering the cooling rate dependence of phase formation during rapid solidification in the Nd2Fe14B system
|
journal | April 1995 |
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alloy
alloy powder
amorphous
amorphous phase
aspect
atomization
atomizing
bonded
carbon
comprising
conditions
consisting
crystalline phase
earth
earth element
element
element selected
encompasses
encompasses methods
energy
energy product
form
forming
forming magnet
granules
heat
heat treating
heat treatment
hf
increase
internal
magnet
magnet powders
magnets
melt
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method
methods
mgoe
mixtures
nanocrystalline
nitrogen
oxygen
phase
powder
powder comprising
powders
product
rare
rare earth
selected
simulating
spherical
spherical alloy
structure
structure comprising
substantially
substantially amorphous
treating
treatment
utilizing
utilizing atomization
z
zr