Compressibility and structural stability of ultra-incompressible bimetallic interstitial carbides and nitrides

D. Errandonea; J. Ruiz-Fuertes; J. A. Sans; D. Santamaria-Perez; O. Gomis; A. Gomez; F. Sapina

doi:10.1103/PhysRevB.85.144103

Compressibility and structural stability of ultra-incompressible bimetallic interstitial carbides and nitrides

Materials Science 2012-04-20 v1 Chemical Physics

Authors: D. Errandonea , J. Ruiz-Fuertes , J. A. Sans , D. Santamaria-Perez , O. Gomis , A. Gomez , F. Sapina

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Abstract

We have investigated by means of high-pressure x-ray diffraction the structural stability of Pd2Mo3N, Ni2Mo3C0.52N0.48, Co3Mo3C0.62N0.38, and Fe3Mo3C. We have found that they remain stable in their ambient-pressure cubic phase at least up to 48 GPa. All of them have a bulk modulus larger than 330 GPa, being the least compressible material Fe3Mo3C, B0 = 374(3) GPa. In addition, apparently a reduction of compressibility is detected as the carbon content increased. The equation of state for each material is determined. A comparison with other refractory materials indicates that interstitial nitrides and carbides behave as ultra-incompressible materials.

Keywords

ultra-incompressible interstitial carbides interstitial nitrides high-pressure x-ray diffraction structural stability bulk modulus

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@article{arxiv.1204.4331,
  title  = {Compressibility and structural stability of ultra-incompressible bimetallic interstitial carbides and nitrides},
  author = {D. Errandonea and J. Ruiz-Fuertes and J. A. Sans and D. Santamaria-Perez and O. Gomis and A. Gomez and F. Sapina},
  journal= {arXiv preprint arXiv:1204.4331},
  year   = {2012}
}

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14 pages, 3 figures, 1 table

Compressibility and structural stability of ultra-incompressible bimetallic interstitial carbides and nitrides

Abstract

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