Experimental studies on nitrogen solubility in Nd2Fe14B alloy in the temperature range 773-1143 K

C. Önneby, Tarasankar Debroy, S. Seetharaman

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

When nitrogen is dissolved in several rare earth-iron alloys, their magnetic properties are known to be significantly improved. The present work was undertaken to investigate the solution of nitrogen in Nd2Fe14B in the temperature range 773-1143 K. The total nitrogen intake was measured continuously by thermogravimetry and the amount of dissolved nitrogen was determined by the vacuum fusion technique. The reaction at all temperatures resulted in the formation of an outer nitride layer and an unreacted inner core where no internal nitride formation could be observed by optical microscopy. Depending on temperature and exposure time, significant amounts of nitrogen could be dissolved in the alloy. The X-ray diffraction data revealed major differences in the structure of the outer complex nitride layer at various temperatures.

Original languageEnglish (US)
Pages (from-to)307-314
Number of pages8
JournalJournal of Magnetism and Magnetic Materials
Volume127
Issue number3
DOIs
StatePublished - Oct 2 1993

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Nitrogen
solubility
Solubility
nitrogen
Nitrides
nitrides
Temperature
temperature
Rare earth alloys
rare earth alloys
iron alloys
Iron alloys
thermogravimetry
Optical microscopy
Thermogravimetric analysis
Magnetic properties
Fusion reactions
fusion
Vacuum
magnetic properties

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "When nitrogen is dissolved in several rare earth-iron alloys, their magnetic properties are known to be significantly improved. The present work was undertaken to investigate the solution of nitrogen in Nd2Fe14B in the temperature range 773-1143 K. The total nitrogen intake was measured continuously by thermogravimetry and the amount of dissolved nitrogen was determined by the vacuum fusion technique. The reaction at all temperatures resulted in the formation of an outer nitride layer and an unreacted inner core where no internal nitride formation could be observed by optical microscopy. Depending on temperature and exposure time, significant amounts of nitrogen could be dissolved in the alloy. The X-ray diffraction data revealed major differences in the structure of the outer complex nitride layer at various temperatures.",
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Experimental studies on nitrogen solubility in Nd2Fe14B alloy in the temperature range 773-1143 K. / Önneby, C.; Debroy, Tarasankar; Seetharaman, S.

In: Journal of Magnetism and Magnetic Materials, Vol. 127, No. 3, 02.10.1993, p. 307-314.

Research output: Contribution to journalArticle

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