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Determination of the Crystal System of a Neodymium-Iron-Boron Alloy by X-ray Diffraction

Published online by Cambridge University Press:  06 March 2019

Andrew M. Wims  and
Jack L. Johnson
Andrew M. Wims
Affiliation:
Analytical Chemistry Department General Motors Research Laboratories GM Technical Center Warren, MI 48090
Jack L. Johnson
Affiliation:
Analytical Chemistry Department General Motors Research Laboratories GM Technical Center Warren, MI 48090
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Extract

The MAGNEQUENCH process for making high energy product (> 10 MG·Oe) permanent magnet alloys of Nd2Fe14B has been described. To advance further the commercial application of these alloys, a better understanding of the microstructure and crystallography is required.

The crystal system and unit cell parameters can be determined from the angular positions of the x-ray diffraction peaks, provided the data have been collected with a 2θ accuracy error of <0,02°. Computer based methods are available for handling the large number of calculations required. This paper describes the experimental problems encountered and solved during the determination of the cell parameters for this alloy.

Type
X. XRD Applications
Information
Advances in X-Ray Analysis , Volume 28: Thirty-Third Annual Conference on Applications of X-ray Analysis, July 30 - August 3, 1984 , 1984 , pp. 377 - 382
Copyright
Copyright © International Centre for Diffraction Data 1984

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References

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