Abstract
The reaction between pure nickel and H2S-H2 mixtures containing 1–65% H2S has been studied over the temperature range 450–600°C. The sulfidation of nickel in the temperature range 560–600°C has been found to follow a linear rate law at low concentrations of H2S and a parabolic rate law at higher concentrations (10% and 65% H2S); X-ray examination of the scale formed on the metal showed it to be almost entirely β-Ni3S2. On the basis of the kinetics and marker studies it can be concluded that the sulfide scale on nickel is formed by the outward transport of the metal and the inward transport of sulfur. In the temperature range 450–500°C the sulfidation of nickel follows a parabolic rate law. In mixtures containing 10% H2S the scale formed contains voids, the occurrence of which is connected with formation of Ni7S6. It has also been shown that the rate of transport through the Ni3S2 layer has an essential influence on the formation of a continuous layer of Ni7S6. Marker studies have shown that both nickel and sulfur appear to be mobile in β′-Ni3S2.
Similar content being viewed by others
References
K. Hauffe and A. Rahmel,Z. Phys. Chem. 199, 152 (1952).
J. Pfeiffer,Z. Metallkd. 49, 169 (1958).
A. Dravnieks,J. Electrochem. Soc. 102, 435 (1955).
B. D. Lichter and C. Wagner,J. Electrochem. Soc. 107, 168 (1960).
S. Mrowec and T. Werber,Arch. Hutn. 9, 289 (1964).
L. Czerski, S. Mrowec, and T. Werber,J. Electrochem. Soc. 109, 273 (1962).
A. Brückman, S. Mrowec, and T. Werber,Fiz. Met. Metalloved. 20, 702 (1965).
V. J. Archarov and F. B. Blankova,Fiz. Met. Metalloved. 8, 452 (1959).
J. E. Dutrizac and T. R. Ingraham,Can. Metall. Q. 8, 119 (1970).
B. D. Bastow and G. C. Wood,Oxid. Met. 9, 473 (1975).
J.-P. Crousier and M. Laffitte,C. R. Acad. Sci. C. 259, 162 (1964).
J.-P. Crousier,Rev. Chim. Miner. 6, 381 (1968).
K. N. Strafford and A. F. Hampton,J. Less Common Met. 21, 305 (1970).
S. Mrowec and A. Stokłosa,Oxid. Met. 8, 379 (1974).
T. Rosenqvist,J. Iron Steel Inst., London 176, 37 (1954).
C. B. Alcock, M. G. Hocking, and S. Zador,Corros. Sci. 9, 111 (1969).
M. R. Wootton and N. Birks,Corros. Sci. 12, 829 (1972).
A. Stokłosa and J. Stringer,Oxid. Met. 11, 277 (1977).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Stokłosa, A., Stringer, J. Studies of the kinetics of nickel sulfidation in H2S-H2 mixtures in the temperature range 450–600°C. Oxid Met 11, 263–276 (1977). https://doi.org/10.1007/BF00606061
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00606061