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      Microstructure of the “white layer” formed on nitrided Fe-7wt.% Cr alloys

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          Abstract

          The formation of a compound, “white” layer on the surface of Fe-7wt.% Cr alloy, by exposure to a gas mixture of ammonia and hydrogen at 580°C, was investigated. The microstructure of the surface layer was analysed employing light and scanning electron microscopy, X-ray diffraction and electron probe microanalysis. For the first time a quantitative (phase) analysis of such a white layer was carried out, demonstrating the presence of a dispersed CrN phase within a γ | iron-nitride matrix.

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          Author and article information

          Journal
          ijmr
          Zeitschrift für Metallkunde
          Carl Hanser Verlag
          0044-3093
          2195-8556
          2006
          : 97
          : 11
          : 1545-1549
          Affiliations
          a Max Planck Institute for Metals Research, Stuttgart, Germany
          b Institute for Physical Metallurgy, University of Stuttgart, Germany
          Author notes
          [* ] Correspondence address, Dr. S. S. Hosmani Max Planck Institute for Metals Research Heisenbergstr. 3, D-70569 Stuttgart, Germany Tel.: +497116893373 Fax: +497116893312 E-mail: s.hosmani@ 123456mf.mpg.de
          Article
          MK101419
          10.3139/146.101419
          © 2006, Carl Hanser Verlag, München
          Page count
          References: 18, Pages: 5
          Product
          Categories
          Applied

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