Abstract
This paper examines several important issues concerning the mechanical properties of coatings, films, and layers. Major emphasis has been placed on descriptions of residual stresses and their influence on mechanical failure of the coating. The residual stresses are shown to depend on the details of the coating or oxidation process, the general curvature of the substrate, the waviness of the coating-substrate interface, and the stress relaxation characteristics of the coating. Residual stress-induced coating failures, which consist either of coating fractures or spalling, are described. The latter is usually more serious and has been afforded primary attention. It is shown that spalling of the coating is a consequence of buckling, when the coating is subject to significant residual compression. The conditions needed to induce buckling and subsequent spalling are described.
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References
A. K. Sinka, H. J. Levistein, and T. E. Smith,J. Appl. Phys. 49, 2423 (1978).
S. S. Chiang, D. B. Marshall, and A. G. Evans,Surfaces and Interfaces in Ceramic and Ceramic/Metal Systems, (J. A. Pask and A. G. Evans, eds. (Plenum, New York, 1981), p. 603.
T. Sumomogi, K. K. Kuwahara, and H. Fujiyama,Thin Solid Films 79, 91 (1981).
D. P. Whittle and J. Stringer,Phil. Trans. R. Soc. London, Ser. A 295 309 (1980).
J. K. Tien and F. S. Pettit,Metall. Trans. 3, 1587 (1972).
F. A. Golightly, F. H. Scott, and G. C. Wood,Oxid. Met. 10, 163 (1976).
K. L. Chopra,Thin Film Phenomena (McGraw-Hill, New York 1969).
J. V. Cathcart, ed.,Stress Effects on the Oxidation of Metals, AIME, New York, 1975).
S. Timoshenko and J. N. Goodier,Theory of Elasticity (McGraw-Hill, New York, 1950).
J. D. Eshelby,Proc. R. Soc. London, Ser. A. 241, 376 (1957).
J. V. Cathcart and G. F. Peterson, inStress Effects on the Oxidation of Metals, J. V. Cathcart, ed. (AIME, New York, 1975), p. 114.
F. N. Rhines and R. G. Connell, inStress Effects on the Oxidation of Metals, J. V. Cathcart, ed. (AIME, New York, 1975), p. 94.
E. P. EerNisse,Appl. Phys. Lett. 35, 8 (1979).
D. Delaunay and A. M. Huntz,J. Mater. Sci. 17, 2027 (1982).
M. V. Speight and J. E. Harris,Acta Metall. 26, 1043 (1978).
C. H. Hsueh and A. G. Evans,J. Appl. Phys. 54, 6672 (1983).
C. A. Anderson,Fracture Mechanics of Ceramics, (R. C. Bradt, F. F. Lange, D. P. H. Hasselman, and A. G. Evans, eds., (Plenum, New York in press).
H. Engell and F. Wever,Acta Metall. 5, 695 (1957).
R. B. Marcus and T. T. Sheng,J. Electrochem. Soc. 129, 1278 (1982).
R. Tressler and R. C. Bradt, eds.,Deformation of Ceramic Materials (Plenum, New York, 1975).
R. M. Cannon, W. H. Rhodes, and A. H. Heuer,J. Am. Ceram. Soc. 63, 46 (1980).
R. Raj and M. F. Ashby,Metall. Trans. 2, 1113 (1971).
W. W. Mullins,J. Appl. Phys. 28, 333 (1957).
T. E. Mitchell, D. A. Voss, and E. P. Butler,J. Mater. Sci. 17, 1825 (1982).
A. G. Evans,J. Am. Ceram. Soc. 65, 242 (1982).
A. G. Evans and J. W. Hutchinson,Int. Jn. Solids Struct. in press.
S. Timoshenko and J. M. Gere,Theory of Elastic Stability (Engineering Society Monograph, New York, 1936).
B. R. Lawn, A. G. Evans, and D. B. Marshall,J. Am. Ceram. Soc. 63, 574 (1980).
S. S. Chiang, D. B. Marshall, and A. G. Evans,J. Appl. Phys. 53, 312 (1982).
G. B. Crumley, unpublished work.
J. D. Kuenzly and D. L. Douglass,Oxid. Met. 8, 139 (1974).
G. C. Kucynski, ed.Sintering Processes (Plenum, New York 1980).
R. M. Cannon and R. L. Coble, inDeformation of Ceramic Materials, R. Tessler and R. C. Bradt, eds. (Plenum, New York, 1975), p. 6.
R. Raj and M. F. Ashby,Acta Metall. 23, 653 (1975).
A. S. Argon,Recent Advances in the Creep of Engineering Alloys Structures B. Wilshire and D. R. Owen, eds. (Pineridge, Swansea, 1982), p. 1.
A. G. Evans, inRecent Advances in the Creep of Engineering Alloys Structures, B. Wilshire and D. R. Owen, eds. (Pineridge, Swansea, 1982), p. 53.
Y. M. Ito, M. Rosenblatt, L. Y. Cheng, F. F. Lange, and A. G. Evans,Int. J. Fract. 17, 483 (1981).
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Evans, A.G., Crumley, G.B. & Demaray, R.E. On the mechanical behavior of brittle coatings and layers. Oxid Met 20, 193–216 (1983). https://doi.org/10.1007/BF00656841
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DOI: https://doi.org/10.1007/BF00656841