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Investigations in the ternary system Ti-Mo-N by means of EPMA and XRD

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Abstract

Arc-melted ternary Ti-Mo-N alloys were heat treated at 1423 K in order to evaluate the compositions of the equilibrium phases. The composition of the bcc phaseβ-Ti x Mo1−x with respect to Mo and Ti was determined by electron probe microanalysis (EPMA) and lattice parameter measurements (XRD). In order to avoid the effects of plastic deformation caused by powdering the ductileβ-Ti x Mo1−x alloys, the lattice parameter measurements were carried out on small particles of the compact samples using Debye-Scherrer cameras. The EPMA and XRD results agree within the expected range of accuracy. Apparently the solubility of nitrogen inβ-Ti x Mo1−x is low and does not perceptibly affect EPMA and XRD results. The relationship between the lattice parameter and the nitrogen content ofδ-TiN1−x was applied to determine the composition ofδ-TiN1−x in equilibrium withβ-TixMo1-x No solid solubility of Mo in TiN1−x could be detected. The tie lines at 1423 K between the two phases were established.

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Authors and Affiliations

  1. Institute for Chemical Technology of Inorganic Materials, Technical University of Vienna, Getreidemarkt 9, A-1060, Vienna, Austria

    Walter Lengauer & Peter Ettmayer

  2. Department of Materials Science, Technical University of Dresden, Dresden, German Democratic Republic

    Hans-Jürgen Ullrich

Authors
  1. Walter Lengauer
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  2. Hans-Jürgen Ullrich
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  3. Peter Ettmayer
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Lengauer, W., Ullrich, HJ. & Ettmayer, P. Investigations in the ternary system Ti-Mo-N by means of EPMA and XRD. Mikrochim Acta 91, 211–218 (1987). https://doi.org/10.1007/BF01199497

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  • DOI: https://doi.org/10.1007/BF01199497

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