Sulphidation-induced changes in the metallic phase of Fe-Cr alloys |
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| Authors: | J Cieślak S M Dubiel Z Żurek |
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| Institution: | (1) Faculty of Physics and Nuclear Techniques, The University of Mining and Metallurgy, al. Mickiewicza 30, 30-059 Kraków, Poland;(2) Institute of Inorganic Chemistry and Technology, Cracow University of Technology, ul. Warszawka 24, 31-155 Kraków, Poland |
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| Abstract: | The influence of sulphidation on the metallic phase in a series of Fe100–x
Cr
x
alloys (x<15) was investigated by means of57Fe Mössbauer spectroscopy. The results obtained gave evidence that the sulphidation at 1073 K is selective in the atmosphere of H2/H2S, with the partial pressure of sulphur ranging from 10–7 to 10–9 atm. Atx
cr=5.0(1) at.%, a change of the sulphidation preference occurs. Forx<5.0 at.%, the sulphidation results in an enrichment of the metallic phase in chromium, while forx> 5.0 at.%, in iron. |
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