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A new thermobalance for studies of the high-temperature sulphidation of metals and alloys

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Abstract

A new thermogravimetric apparatus for studying the kinetics of metal sulphidation in a H2/H2S gas mixture is described. The main difference between this device and other equipment is the application of hydrogen to obtain a H2/H2S mixture at suitable sulphur partial pressures at a total mixture pressure of 1 atm.

The use of the carrier gas allows the measurement of sulphidation kinetics under dynamic conditions and consequently over a much wider pressure range of sulphur vapour, down to 10−12 atm.

Zusammenfassung

Es wird ein neue Apparat zur Untersuchung der Hochtemperatur-Sulfidierung von Metallen in H2/H2S Atmosphare beschrieben. Der Unterschied zwischen diesem Apparat und dem fruher benutzten, besteht im Gasdosierungsystem. Wasserstoff reagiert teilweise mit Schwefel, was eine stabile Zusammensetzung des Gasgemisches beim niedrigen Schwefeldampfdruck sichert. Gewichtsmessungen von Metallen und Legierungen konnen in diesem System bei Temperaturen von 1073 bis 1473 K mit einer Genauigkeit von 10−6 g ausgefuhrt werden.

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References

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Authors and Affiliations

  1. Institute of Inorganic Chemistry and Technology, Technical University of Cracow, Poland

    Z. Zurek

Authors
  1. Z. Zurek
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Additional information

The author would like to thank Dr Marek Jodko for his help in devising the chemical analysis of H2S in a H2/H2S gas mixture and for stimulating discussions relating to the design of the above apparatus.

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Zurek, Z. A new thermobalance for studies of the high-temperature sulphidation of metals and alloys. Journal of Thermal Analysis 39, 15–20 (1993). https://doi.org/10.1007/BF02235442

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  • DOI: https://doi.org/10.1007/BF02235442

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