Abstract
Ni-Mn alloys containing up to 38% Mn have been oxidized in pure oxygen between 873 and 1273 K and the parabolic rate constants measured. The scale morphologies and oxide compositions are interpreted in terms of modifications to the scale on pure Mn caused by the presence of Ni. The scales are composed predominantly of two layers at all temperatures, giving the sequences of phases alloy/cubic monoxide (Ni, Mn)O/ternary spinel, with the cubic (Ni, Mn)O layer always having the greater thickness. There is limited evidence for a third, very thin, outer layer in the scales on all alloys at 873 K and for Ni-38%Mn at 1073 K, which is tentatively considered to be Mn2O3, giving layers in the order alloy/cubic monoxide/ternary spinel/Mn2O3, by analogy with the scale formed on pure Mn. The distribution of the alloy components in the scale is discussed in relation to the Ni-Mn-O phase diagram and in terms of recent theoretical treatments of solid solution scale formation on binary alloys, as far as the available diffusion data allow. The occurrence of internal and intergranular oxidation and the formation of a Mn-depleted zone coincident with the band of uniform internal oxide are considered briefly.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B. D. Bastow, G. C. Wood, and D. P. Whittle,Oxid, Met. 16, 1 (1981).
C. Wagner,Corros. Sci. 9, 91 (1969).
B. D. Bastow, D. P. Whittle, and G. C. Wood,Proc. R. Soc. A 356, 177 (1977).
B. D. Bastow, D. P. Whittle, and G. C. Wood,Corros. Sci. 16, 51 (1976).
D. G. Wickham,J. Inorg. Nucl. Chem. 26, 1369 (1964).
F. Gesmundo, P. Nanni, and D. P. Whittle,Corros. Sci. 19, 675 (1979).
E. B. Evans, C. A. Phalniker, and W. M. Baldwin,J. Electrochem. Soc. 103, 367 (1956).
Yu. V. Golikov, V. P. Barkhatov, V. F. Balakirev, A. G. Zalazinskii, and G. I. Chufarov,Russ. J. Phys. Chem. 51, 880 (1977).
G. C. Wood, I. G. Wright and J. M. Ferguson,Corros. Sci. 5, 645 (1965).
W. W. Smeltzer and D. J. Young,Prog. Solid State Chem. 10, 17 (1975).
R. S. Gurnick and W. M. Baldwin,Trans. Am. Soc. Met. 42, 308 (1950).
J. Paidassi and A. Echeverria,Acta Metall. 7, 293 (1959).
F. Bouillon, C. Deville, and M. Jardinier-Offergeld,C. R. Acad. Sci. 252, 3986 (1961).
J. F. Elliott and M. Gleiser,Thermochemistry for Steelmaking (Addison-Wesley, Reading, Mass, 1960).
D. P. Whittle, B. D. Bastow, and G. C. Wood,Oxid. Met. 9, 215 (1975).
R. A. Swalin and A. Martin,Trans. AIME 206, 567 (1956).
J. B. Price and J. B. Wagner,J. Electrochem. Soc. 117, 242 (1970).
W. B. Crow, Report ARL 70-0090, Project No. 7021, USAF, Ohio.
M. L. Volpe and J. Reddy,J. Chem. Phys. 53, 1117 (1970).
Y. D. Tretyakov and R. A. Rapp,Trans. AIME 245, 1235 (1969).
I. Bransky and N. M. Tallan,J. Electrochem. Soc. 118, 788 (1971).
A. D. Dalvi and D. E. Coates,Oxid. Met. 3, 203 (1971).
M. G. C. Cox, B. McEnaney, and V. D. Scott,Philos. Mag. 26, 839 (1972).
P. Mayer and W. W. Smeltzer,J. Electrochem. Soc. 123, 661 (1976).
D. P. Whittle, F. Gesmundo, B. D. Bastow, and G. C. Wood,Oxid. Met. 16, 159 (1981).
Y. Shida, F. H. Stott, B. D. Bastow, D. P. Whittle and G. C. Wood,Oxid. Met. 18, 93 (1982).
G. C. Wood, F. H. Stott, D. P. Whittle, Y. Shida, and B. D. Bastow,Corros. Sci., submitted.
Author information
Authors and Affiliations
Additional information
Deceased.
Rights and permissions
About this article
Cite this article
Bastow, B.D., Palmer, I., Whittle, D.P. et al. Oxidation of nickel-manganese alloys in the temperature range 873–1273 K. Oxid Met 18, 295–314 (1982). https://doi.org/10.1007/BF00656573
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00656573