The Ternary System Fe–Nd–C

The phase equilibria in the ternary system Fe–Nd–C were established by metallography, X-ray diffraction and differential thermal analysis and are described with the help of a liquidus projection, an isothermal section at 850 °C, two vertical sections, and a reaction scheme. The formation of the magn...

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Bibliographic Details
Published inInternational journal of materials research Vol. 92; no. 2; pp. 172 - 178
Main Authors Grieb, B., Henig, E.-Th, Reinsch, B., Petzow, G., Buschow, K. H. J., de Mooij, D. B., Stadelmaier, H. H.
Format Journal Article
LanguageEnglish
Published De Gruyter 22.12.2021
Subjects
Phase equilibria
Ternary System Fe–Nd–C
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Summary:The phase equilibria in the ternary system Fe–Nd–C were established by metallography, X-ray diffraction and differential thermal analysis and are described with the help of a liquidus projection, an isothermal section at 850 °C, two vertical sections, and a reaction scheme. The formation of the magnetically hard phase Fe Nd C in cast alloys is accompanied by Nd-rich carbides that cause severe corrosion. The equilibria involving Fe Nd C are extremely slow to set in, but they can be accelerated substantially by adding small amounts of boron and copper. Doping with copper provides the added benefit of eliminating the corrosive carbides.
ISSN:1862-5282
2195-8556
DOI:10.3139/ijmr-2001-0036