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Cation vacancy concentrations in ferrous sulfide containing chromium and manganese

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Abstract

A gravimetric technique was used to measure the cation vacancy concentration in pure ferrous sulfide and in ferrous sulfide containing small amounts of chromium or manganese. Measurements were made over a wide range of sulfur pressures, defined by H2/H2S mixtures, at 500, 600, and 700°C (723, 823, and 923 K). Chromium was found to increase the defect concentration by an amount consistent with the Wagner-Hauffe model pertaining to aliovalent cations. Also in accord with this model, manganese did not measurably affect the cation vacancy concentration.

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Research sponsored by the Division of Materials Sciences, U.S. Department of Energy under contract DE-AC05-840R21400 with Martin Marietta Energy Systems, Inc.

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Pawelt, R.E., Campbell, J.J. Cation vacancy concentrations in ferrous sulfide containing chromium and manganese. Oxid Met 26, 253–261 (1986). https://doi.org/10.1007/BF00659187

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Key words

  • FeS
  • sulfidation
  • impurity effects