High temperature stability and thermal expansion behavior of molybdenum-chromium M2C carbides

C. A. Knepfler, K. T. Faber*, J. Weertman, G. B. Olson, C. R. Hubbard, O. B. Cavin, N. Packen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The thermal expansion of molybdenum-chromium M2C carbides has been studied over the temperature range from room temperature to 900 °C using high-temperature X-ray diffraction. Hyperstoichiometric carbides demonstrated hysteretic thermal expansion/contraction as excess carbon was lost upon heating above 750 °C in an inert environment. Coefficients of thermal expansion of both the a and c axes increase linearly with chromium content.

Original languageEnglish (US)
Pages (from-to)139-142
Number of pages4
JournalJournal of Alloys and Compounds
Volume248
Issue number1-2
DOIs
StatePublished - Feb 15 1997

Keywords

  • High-temperature X-ray diffraction
  • MC carbides
  • Non-stoichiometry
  • Thermal expansion

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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