Abstract
The “passive” oxidation behaviour of silicon nitride hot-pressed with 1 wt% MgO has been studied in dry oxygen in the temperature range 1000 to 1400‡ C. The oxidation follows the classical parabolic behaviour with an apparent activation energy of 375 kJ mol−1. Except for minor amounts of a glass and cristobalite, the oxide film consists predominantly of MgSiO3 in which various impurity elements, e.g. Ca, Fe, Al, etc., concentrate. The outward diffusion of Mg2+ and impurity cations from the grainboundary glass phase through the oxide film appears to be oxidation rate controlling.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
A. F. Mclean, E. A. Fisher and R. J. Bratton, Report No. AMMRC 72-19, (1972).
J. J. Burke, A. E. Gorum and R. N. Katz, eds., “Ceramics for High Performance Applications” (Brook Hill, Chestnut Hill, 1974).
R. M. Horton, J. Amer. Ceram. Soc. 52 (1969) 121.
D. Tetard, P. Lortholary, P. Goursat and M. Billy, Rev. Int. Haut. Temp. Refrac. 10 (1973) 153.
P. Goursat, P. Lortholary, D. Tetard and M. Billy, in Proceedings of the 7th International Symposium on Reactivity of Solids, Bristol (1972) p. 315.
A. G. Evans and R. W. Davidge, J. Mater. Sci. 5 (1970) 314.
C. Wagner, J. Appl. Phys. 29 (1959) 305.
S. C. Singhal, in Proceedings of the 1974 Gas Turbine Materials in The Marine Environment Conference, edited by J. W. Fairbanks and I. Machlin, Battelle's Metals and Ceramics Information Center, Report 75-27, (1975) p. 311.
R. Kossowsky, J. Mater. Sci. 8 (1973) 1603.
E. T. Turkdogan and P. M. Bills, Amer. Ceram. Soc. Bull. 39 (1960) 682.
R. Kossowsky, J. Amer. Ceram. Soc. 56 (1973) 531.
D. R. Stull and H. Prophet, JANAF Thermochemical Tables, NSRDS-NBS 37, (1971).
W. D. Forgeng and B. F. Decker, Trans. Met. Soc. AIME 212 (1958) 343.
S. N. Ruddlesden and P. Popper, Acta Cryst. 11 (1958) 465.
S. Wild, P. Grieveson and K. H. Jack, “Special Ceramics” Vol. 5, edited by P. Popper (The British Ceramic Research Association, Stoke-on-Trent, 1972) p. 385.
Idem, ibid p. 271.
S. A. Jansson and E. A. Gulbransen, in “High Temperature Gas-Metal Reactions in Mixed Environments”, edited by S. A. Jansson and Z. A. Foroulis (TMS-AIME, New York, 1973).
W. R. Ryall and A. Muan, Science 165 (1969) 1363.
H. Schick, “Thermodynamics of Certain Refractory Compounds”, Vol. 2, (Academic Press, New York, 1966).
H. F. Priest, F. C. Burns, G. L. Priest and E. C. Skaar, J. Amer. Ceram. Soc. 56 (1973) 395.
I. Kohatsu and J. W. Mccauley, Mat. Res. Bull. 9 (1974) 917.
H. F. Priest, Army Materials and Mechanics Research Center, private communication (1974).
P. J. Jorgensen, M. E. Wadsworth and I. B. Cutler, J. Amer. Ceram. Soc. 42 (1959) 613.
Idem, ibid 44 (1961) 258.
R. F. Adamsky, J. Phys. Chem. 63 (1959) 305.
G. Ervin, J. Amer. Ceram. Soc. 41 (1958) 347.
F. W. Ainger, J. Mater. Sci. 1 (1966) 1.
B. E. Deal, J. Electrochem. Soc. 110 (1963) 527.
H. C. Fvitts, H. W. Cooper and S. S. Flaschen, J. Electrochem. Soc. 111 (1964) 699.
E. W. Sucov, J. Amer. Ceram. Soc. 46 (1963) 14.
E. L. Williams, ibid 48 (1965) 190.
R. Lindner and G. Parfitt, J. Chem. Phys. 26 (1957) 182.
G. Borchardt and H. Schmalzried, Ber. Deut. Keram. Ges. 49 (1972) 5.
V. A. Majdic and H. Henning, ibid 47 (1970) 53.
B. V. Volkonskii and L. G. Sudakas, Tsement 23 (1957) 17.
R. Kossowsky and S. C. Singhal, in “Grain Boundaries in Engineering Materials”, edited by J. L. Walter, J. H. Westbrook and D. A. Woodford (Claitor's, Baton Rouge, 1975) p. 275.
S. C. Singhal, Westinghouse Research Labs, unpublished work (1975).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Singhal, S.C. Thermodynamics and kinetics of oxidation of hot-pressed silicon nitride. J Mater Sci 11, 500–509 (1976). https://doi.org/10.1007/BF00540931
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00540931