The formation of aluminum oxide scales on high-temperature alloys

Springer Science and Business Media LLC - Tập 38 Số 3-4 - Trang 233-254 - 1992
R. Prescott1, M. J. Graham1
1Institute for Microstructural Sciences, National Research Council, K1A 0R9, Ottawa, Canada

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G. C. Wood and F. H. Stott, The development and growth of protective?-Al2O3 scales on alloys,High Temp. Corros. NACE 6, 227?250 (1983).

F. H. Stott and G. C. Wood, Growth and adhesion of oxide scales on Al2O3-forming alloys and coatings,Mater. Sci. Eng. 87, 267?214 (1987).

H. Hindham and D. P. Whittle, Microstructure, adhesion and growth kinetics of protective scales on metals and alloys,Oxid. Met. 18(5/6), 245?284 (1982).

N. R. Linblad, A review of the behavior of aluminide coated superalloys,Oxid. Met. 1(1), 143?170 (1969).

G. W. Goward, Recent developments in high temperature coatings for gas turbine airfoils,High Temp. Corros. NACE 6, 553?560 (1983).

M. A. Hocking, V. Vasantasree, and P. S. Sidky, Metallic and ceramic coatings, Longman Scientific and Technical (1989).

W. E. Boggs, The oxidation of iron-aluminum alloys from 450 to 950°C,J. Electrochem. Soc. 118(6), 906?913 (1971).

P. Tomaszewick and G. R. Wallwork, Iron-Aluminium Alloys: A review of their oxidation behaviour,Rev. High Temp. Mater 4(1), 75?105 (1978).

G. C. Wood, High-temperature oxidation of alloys,Oxid. Met. 2(1), 11?57 (1970).

W. C. Hagel, The oxidation of ironnickel-, and cobalt-base alloys containing aluminum,Corrosion 21(10) 316?326 (1965).

G. C. Wood and F. H. Stott, The influence of aluminum additions on the oxidation of Co-Cr alloys at 1000 and 1200°C,Oxid. Met. 3(4), 365?398 (1971).

F. H. Stott, G. C. Wood, and M. G. Hobby, Comparison of the oxidation behavior of iron-chromium-aluminum, nickel-chromium-aluminum, and cobalt-chromium-aluminum alloys,Oxid. Met. 3(2), 103?113 (1971).

G. Ben Abderrazik, A. Boumaza, G. Moulin, A M. Huntz and R. Mervel, High temperature oxidation of superalloys protected by M-Cr-Al-Y overlay coatings, 8th European Congress on Corrosion, Vol. 1, Paper 70 (1985).

W. H. Gitzen, Alumina as ceramic material,Am. Ceram. Soc. (1970).

G. C. Wood and B. Chattopadhay, Transient oxidation of Ni-base alloys,Corros. Sci. 10, 471?480 (1970).

G. C. Wood and B. Chattopadhay, Transient oxidation of alloys,Oxid. Met. 2, 373?399 (1970).

R. E. Grace and A. E. Seybolt, Selective oxidation of aluminum from an aluminum-iron alloy,J. Electrochem. Soc. 105, 582?585 (1958).

T. Nakagama and K. Kaneko, Selective oxide films on 5% aluminum-iron alloy in a low oxygen-potential atmosphere,Corrosion 26(7), 187?188 (1970).

W. C. Hagel, The oxidation of iron, nickel and cobalt-based alloys containing aluminum,Corrosion 21(10), 316?326 (1965).

I. Kvernes, M. Oliveira, and P. Kofstad, High temperature oxidation of Fe-13Cr-XAl alloys in air/H2O vapor mixtures,Corros. Sci. 17, 237?252 (1977).

B. H. Kear, F. S. Pettit, D. E. Fornwalt, and L. P. Lemaire, On the transient oxidation of a Ni-15Cr-6Al Alloy,Oxid. Met. 3, 557?569 (1971).

J. L. Smialek and R. Gibala, Structure of transient oxides formed on Ni-Cr-Al alloys,Met. Trans. 14A(10), 2143?2161 (1983).

C. J. P. Steiner, D. P. H. Hasselman, and R. M. Spriggs, Kinetics of the?-? alumina phase transformation,J. Am. Ceram. Soc. 54(8), 412?413 (1971).

P. A. van Manen, E. W. A. Young, D. Schalkoard, C. J. Van der Wekken, and J. H. W. de Wit, The influence of Y on structure and growth mechanism of alumina scales,Surf. Interface Analy. 12, 391?396 (1988).

P. T. Moseley, K. R. Hyde, B. A. Bellamy, and G. Tappin, The microstructure of the scale formed during the high temperature oxidation of a Fe-Cr alloy steel,Corros. Sci. 24(6), 547?565 (1984).

G. C. Rybicki and J. L. Smialek, Effect of the?-?-Al2O3 transformation on the oxidation behavior of?-NiAl + Zr,Oxid. Met. 31(3/4), 275?304 (1989).

J. L. Smialek, J. Doychak, and D. J. Gaydosh, Oxidation behavior of Fe-Al + Zr, Hf, B, Workshop on Oxidation of High Temperature Intermetallics, TMS AME (1988).

J. Peters and H. J. Grabke, Formation of alumina layers on iron-base alloys,Werkst. Korros. 35, 385?394 (1984).

J. K. Doychak, J. L. Smialek, and T. E. Mitchell, Formation of single crystal Al2O3 scales on?-NiAl,Proc. Int. Cong. Metall. Corros. 1, 35?40 (1984).

T. A. Ramanarayanan, M. Raghavan, and R. Petkovic-Luton, Al2O3 scales on ODS alloys, Proc. JIMIS-3: High Temp. Corros. Trans. of the Japan Inst. of Metals, Suppl., 199?206 (1983).

E. J. Felton and F. S. Pettit, Development, growth and adhesion of Al2O3 on platinumaluminum alloys,Oxid. Met. 10(3), 184?223 (1976).

M. J. Graham, J. I. Eldridge, D. F. Mitchell, and R. J. Hussey, Anion transport in growing Cr2O3 and Al2O3 scales,Mater. Sci. Forum 43, 207?242 (1989).

F. A. Kroeger, Defects and transport in SiO2, Al2O3, Cr2O3,High Temp. Corros. NACE 6, 89?100 (1983).

J. D. Crawley, J. W. Halloran, and A. R. Cooper, Oxygen diffusion in alpha alumina, NASA Tech. Memo. 83622 E-1862, 356 (1984).

D. J. Reed and B. J. Weunsch, Ion probe measurement of oxygen self-diffusion in single crystal aluminum oxide,J. Am. Ceram. Soc. 63(1?2), 88?92 (1980).

Y. Oishi, K. Ando, and Y. Kubota, Self-diffusion of oxygen in single crystal alumina,J. Chem. Phys. 73(3), 1410?1412 (1980).

K. P. R. Reddy, Oxygen diffusion in close packed oxides,Diss. Abs. Int. B. 40(5), 2314 (1979).

Y. Oishi and W. D. Kingery, Self-diffusion of oxygen in single crystal and polycrystalline aluminum oxide,J. Chem. Phys. 33, 480?486 (1960).

A. E. Paladino and R. L. Coble, Effect of grain boundaries on diffusion-controlled processes in aluminum oxide,J. Am. Ceram. Soc. 46, 133?136 (1963).

R. E. Mistler and R. L. Coble, Rate-determining species in diffusion-controlled processes in alumina,J. Am. Ceram. Soc. 54(1), 60?61 (1971).

R. E. Mistler and R. L. Coble, Grain-boundary diffusion and boundary widths in metals and ceramics,J. Appl. Phys. 45, 1507?1509 (1974).

A. E. Paladino and W. D. Kingery, Aluminum-ion diffusion in aluminum oxide,J. Chem. Phys. 37, 957?962 (1962).

R. J. Brook, J. Yee, and F. A. Kroger, Electrochemical cells and electrical conduction of pure and doped aluminum oxide,J. Am. Ceram. Soc. 54(9), 444?451 (1971).

J. Pappis and W. D. Kingery, Electrical properties of single crystal and polycrystalline alumina at high temperatures,J. Am. Ceram. Soc. 44, 459?464 (1961).

G. J. Dienes, D. O. Welch, C. R. Fisher, R. D. Hatcher, O. Lazareth, and M. Samburg, Shell-model calculation of some point-defect properties in?-aluminum oxide,Phys. Rev. B 11(8), 3060?3070 (1975).

C. R. A. Catlow, R. James, W. C. Mackrodt, and R. F. Stewart, Defect energies in?aluminum oxide and rutile titanium oxide,Phys. Rev. B Condens. Matt. 25(2), 1006?1026 (1982).

K. P. R. Reddy and A. R. Cooper, Oxygen diffusion in sapphire,J. Am. Ceram. Soc. 65(12), 634?638 (1982).

H. A. Wang and F. A. Kroeger, Chemical diffusion in polycrystalline aluminum oxide (Al2O3),J. Am. Ceram. Soc. 63(11?12), 613?619 (1980).

P. A. Lessing and R. S. Gordon, Creep of polycrystalline alumina, pure and doped with transition metal impurities,J. Mater Sci. 12(11), 2291?2302 (1977).

W. R. Rao and I. B. Cutler, Effect of iron oxide in the sintering kinetics of aluminum (111) oxide,J. Am. Ceram. Soc. 56(71), 588?593 (1973).

I. D. Hou, S. K. Tiku, H. A. Wang, and F. A. Kroeger, Conductiviy and creep in acceptor dominated polycrystalline alumina,J. Mater. Sci. 14(8), 1877?1889 (1979).

M. M. El-Aiat and F. A. Kroeger, Determination of the parameters of native disorders in?-alumina,J. Am. Ceram. Soc. 65(3), 162?166 (1982).

M. M. El-Aiat and F. A. Kroeger, The d.c. conductivity of?-aluminum oxide doped with vanadium and hydrogen, Proc. Symp.?Tribute to Carl Wagner, Chem. Metall. (1981), pp. 483?492.

M. M. El-Aiat and F. A. Kroeger, Hydrogen donors in?-aluminum oxide,J. Appl. Phys. 53(5), 3658?3667 (1982).

Y. Oishi, K. Ando, N. Suga, and W. D. Kingery, Effect of surface condition on oxygen self-diffusion coefficients for single-crystal alumina,J. Am. Ceram. Soc. 66(8), C130?131 (1983).

Y. Oishi and K. Ando, Oxygen diffusion in magnesia and alumina,Adv. Ceram. 10, 374?393 (1984).

B. J. Pletka, T. E. Mitchell, and A. H. Heuer, Solid solution hardening of sapphire (?-Al2O3),Phys. Stat. Sol. A 39(1), 307?311 (1977).

S. K. Mohapatra and F. A. Kroeger, The dominant type of atomic disorder in?-Al2O3,J. Am. Ceram. Soc. 61(3?4), 106?109 (1978).

S. I. Warshaw and F. H. Norton, Deformation behavior of polycrystalline aluminum oxide,J. Am. Ceram. Soc. 45, 479?486 (1962).

R. L. Coble and Y. M. Guerard, Creep of polycrystalline aluminum oxide,J. Am. Ceram. Soc. 46, 353?354 (1963).

E. M. Passmore and T. Vasilos, Creep of dense, pure, fine-grained aluminum oxide,J. Am. Ceram. Soc. 49, 166?168 (1966).

K. N. Lee and W. L. Worrell, The oxidation of iridium-aluminum and iridium-hafnium intermetallics at temperatures above 1550°C,Oxid. Met. 32(5/6), 357?369 (1989).

J. D. Kuenzly and D. L. Douglass, The oxidation mechanism of Ni3Al containing yttrium,Oxid. Met. 8(3), 139?177 (1974).

A. Kumar, M. Nasrallah and D. L. Douglass, The effect of yttrium and thorium on the oxidation behavior of Ni-Cr-Al alloys,Oxid. Met. 8(4), 227?263 (1974).

A. Atkinson, Lattice, line defect and grain boundary transport in oxide scales,Oxid. Met. 23(5/6), 261?266 (1985).

A. Atkinson, Conditions for the formation of new oxide within oxide films growing on metals,Corros. Sci. 22, 347?357 (1982).

S. Mrowec, Transport of gaseous species in growing oxide scales,Oxid. Met. 23(5/6), 266?270 (1985).

F. H. Stott, G. C. Wood, M. Hirbod, and F. A. Golightly, The growth and microstructure of?-alumina on high-temperature iron-chromium base alloys,Proc. Inst. Met. Conf. Environ. Degrad. High Temp. Mater. 2(13), 1?7 (1980).

F. A. Golightly, F. H. Stott, and G. C. Wood, The relationship between oxide grain morphology and growth mechanisms for Fe-Cr-Al and Fe-Cr-Al-Y alloys,J. Electrochem. Soc. 126(6), 1035?1042 (1979).

J. L. Smialek, Oxide morphology and spalling model for NiAl,Metall. Trans. 9A, 309?320 (1978).

J. L. Smialek, The relationship between oxide grain morphology and growth mechanisms for Fe-Cr-Al and Fe-Cr-Al-Y alloys,J. Electrochem. Soc. 126(12), 2275?2276 (1979).

H. M. Hindham and W. W. Smeltzer, Growth and Microstructure of?-Al2O3 on?-NiAl,J. Electrochem. Soc. 127(7) 1630?1635 (1980).

F. A. Golightly, F. H. Stott, and G. C. Wood, The influence of yttrium additions on the oxide-scale adhesion to an iron-chromium-aluminum alloy,Oxid. Met. 10(3), 163?187 (1976).

F. A. Golightly, G. C. Wood, and F. H. Stott, The early stages of development of?-Al2O3 scales on Fe-Cr-Al and Fe-Cr-Al-Y alloys at high temperature,Oxid. Met. 14(3), 217?234 (1980).

F. H. Stott, G. C. Wood, and F. A. Golightly, The isothermal oxidation behaviour of Fe-Cr-Al and Fe-Cr-Al-Y alloys at 1200°C,Corros. Sci. 18(11), 869?887 (1979).

I. M. Allam, D. P. Whittle, and J. Stringer, The oxidation behavior of Co-Cr-Al systems containing active element additions,Oxid. Met. 12(1), 35?66 (1978).

D. P. Whittle and H. M. Hindham, Microstructure and growth of protective Cr2O3 and Al2O3 scales at high temperature, Proc. Conf. on Corrosion-Erosion-Wear of Materials in Emerging Energy Systems, NACE, pp. 54?99 (1982).

J. L. Smialek and R. Gibala, Diffusion processes in Al2O3 scales: Void growth, grain growth and scale growth,High Temperature Corrosion NACE 6, 274?283 (1983).

D. J. Barber, Elecron microscopy and diffraction by aluminum oxide whiskers,Phil. Mag. 10(103), 75?94 (1964).

J. G. Fountain, F. A. Golightly, F. H. Stott, and G. C. Wood, The influence of platinum on the maintenance of?-Al2O3 as a protective scale,Oxid. Met. 10(5), 341?345 (1976).

J. K. Tien and F. S. Pettit, Mechanism of oxide adherence on Fe-25Cr-4Al(Y or Sc) alloys,Metall. Trans. 3, 1587?1599 (1972).

R. L. Tallman and E. A. Gulbransen, Crystal morphology and mechanisms of growth of?-Fe2O3 whiskers on iron,J. Electrochem. Soc. 114(12), 1227?1230 (1967).

H. Fischmeister, Mechanism and kinetic effects of particulate oxide growth. I. Whiskers,Colloq. Intern. Centre Natl. Tech. Sci. 112, 211?215 (1963).

J. A. Sartell, R. J. Stokes, S. H. Bendel, T. L. Johnson and C. H. Li, The role of oxide plasticity on the oxidation mechanism of pure copper,Trans. Am. Inst. Min. Metall. Engr. 215, 420?424 (1959).

J. L. Smialek, J. Doychak, and D. J. Gaydosh, Oxidation behavior of FeAl + Hf, Zr, B,Oxid. Met. 34, 259?275 (1990).

T. A. Ramanarayanan, R. Ayer, R. Petkovic-Luton, and D. P. Leta, The influence of yttrium on oxide scale growth and adherence,Oxid. Met. 29(5/6), 445?472 (1988).

H. M. Hindham and W. W. Smeltzer, Application of Auger electron spectroscopy and inert metal marker techniques to determine metal and oxygen transport in oxide films on metals,Oxid. Met. 14(4), 337?349 (1980).

J. Jedlinski and S. Mrowec, The influence of implanted yttrium on the oxidation behavior of?-NiAl,Mater. Sci. Eng. 87, 281?287 (1987).

E. W. A. Young, H. E. Bishop, and J. H. W. Wit, On the use of markers and tracers to establish the growth mechanism of alumina scales during high-temperature oxidation,Surf. Interface Anal. 9, 163?168 (1986).

E. W. A. Young and J. H. W. deWit, The use of a O18 tracer and Rutherford back scattering spectrometry to study the oxidation mechanism of NiAl,Solid State Ionics 16, 39?46 (1985).

S. N. Basu and J. W. Halloran, Tracer isotope distribution in growing oxide scales,Oxid. Met. 27(3/4), 143?155 (1987).

S. N. Basu, Analysis techniques for tracer studies of oxidation, NASA Contractor Report 174796(1984).

K. P. R. Reddy, J. L. Smialek, and A. R. Cooper, O18 tracer studies of Al2O3 scale formation on Ni-Cr-Al alloys,Oxid. Met. 17(5/6), 429?449 (1982).

E. W. A. Young and J. H. W. deWit, An O18 tracer study on the growth mechanism of alumina scales on NiAl and Ni-Al-Y alloys,Oxid. Met. 26(5/6), 351?361 (1986).

G. Ben Abderrazik, A. Moulin, A. M. Huntz, E. W. A. Young, and J. H. W. deWit, Growth mechanism of Al2O3 scales developed on Fe-Cr-Al alloys,Solid State Ionics 22, 285?294 (1987).

A. M. Huntz, G. Ben Abderrazik, G. Moulin, E. W. A. Young, and J. H. W. deWit, Yttrium influence on the alumina growth mechanism on an FeCr23Al5 alloy,Appl. Surf. Sci. 28, 345?366 (1987).

G. Moulin, A. M. Huntz, J. Rousselet, and G. Ben Abderrazik, Influence of impurities (such as carbon ...) and defects related to stresses on high-temperature oxidation resistance of Fe-Cr-Al and Ni-Cr-Fe alloys,Proc. Int. Cong. Metall. Corros. 1, 41?46 (1984).

W. J. Quadakkers, H. Holzbrecher, K. G. Briefs, and H. Beske, Differences in growth mechanisms of oxide scales formed on ODS and conventional wrought alloys,Oxid. Met. 32(1/2), 67?88 (1989).

W. J. Quadakkers, W. Speier, H. Holzbrecher, and H. Nickel, SIMS investigations of the transport phenomena in chromia and alumina scales on ODS alloys, Proc. Conf. Microscopy of Oxidation, Cambridge, U.K., Mar. 1990, pp. 149?160 (1991).

R. Prescott, D. F. Mitchell, G. I. Sproule, R. J. Hussey, and M. J. Graham, Hightemperature oxidation of iron-aluminum alloys, Proc. Int. Symp. on Solid State Chem. of Advanced Materials, Tokyo, Japan, Dec. 1990, pp. 83?89 (1992).

R. R. Dils and P. S. Follansbee, Control of metal alloy oxidation with electric fields,Proc. Elect. Microsc. Soc. Am. 31, 164?165 (1973).

J S. Sheasby and J. G. Grandsen, The ionic transport properties of aluminia scales,Proc. 6th Int. Cong, on Metallic Corrosion, 723?730 (1975).

J. S. Sheasby and D. B. Jory, Electrical properties of growing alumina scales,Oxid. Met. 12(6), 527?539 (1978).

G. Ben Abderrazik, F. Millot, G. Moulin, and A. M. Huntz, Experimental procedure for determining transport properties of oxide scales,J. Am. Ceram. Soc. 68(6), 302?306 (1985).

G. Ben Abderrazik, F. Millot, G. Moulin, and A. M. Huntz, Determination of transport properties of oxide scales,J. Am. Ceram. Soc. 68(6), 307?314 (1985).

G. Ben Abderrazik, G. Moulin, A. M. Huntz, and F. Millot, Transport properties of Al2O3 scale developed by oxidation of a Fe-Cr-Al alloy, 8th European Cong, on Corrosion, Vol.1, Paper 69 (1985).

A. M. Huntz, G. Moulin, and B. Lesage, Contribution of combined techniques for studying oxidation mechanisms, Proc. 9th Int. Cong, on Metallic Corrosion, Vol. 2, (1984), pp. 400?405.

G. Ben Abderrazik, F. Millot, G. Moulin, and A. M. Huntz, Comment on ?Experimental procedure for determining transport properties of oxide scales? and ?Determination of transport properties of alumina oxide scale?,J. Am. Ceram, Soc. 70(12), 374?375 (1987).

J. H. Davidson, P. Lacombe, A. M Huntz, C. Roques-Carmes, J. C. Pivin, and D. Delauney, The development of oxidation-resistant Fe-Ni-Cr-Al alloys for use at temperatures up to 1300°C, Proc. Conf. on Behavior of High-Temperature Alloys in Aggressive Environments, The Metals Society, (1980), pp. 209?224.

D. P. Moon, Role of reactive elements in alloy protection,Mater. Sci. Eng. 5(8), 754?764 (1989).

D. P. Whittle and J. Stringer, Improvement in high-temperature oxidation resistance by additions of reactive elements or oxide dispersions,Phil. Trans. Roy. Soc. Lond. A 295, 309?329 (1980).

G. Beranger, F. Armanet, and M. Lambertin, Active elements in oxidation and their properties, Proc. Conf. on The Role of Active Elements in Oxidation Behavior of High Temperature Metals and Alloys (1988), pp. 33?51.

J. Stringer, The reactive element effect in high-temperature corrosion,Mater. Sci. Eng. A 120, 129?137 (1989).

A. M. Huntz, French research on the effect of reactive elements on the oxidation behavior,Mater. Sci. Forum 43, 131?206 (1989).

A. M. Huntz, Influence of active elements on the oxidation of M-Cr-Al alloys,Mater. Sci. Eng. 87, 251?260 (1987).

J. Jedlinski, The influence of reactive elements on the oxidation behavior of alumina formers,Proc. 11th Int. Con. Cong. 4, 21?28 (1990).

A. M. Huntz, The effect of active elements on the oxidation behavior of Al2O3 formers, Proc. Conf. on The Role of Active Elements in the Oxidation Behavior of High Temperature Metals and Alloys (1988), pp. 81?109.

J. Stringer, B. A. Wilcox, and R. I. Jaffee, High-temperature oxidation of nickel-20 wt% chromium alloys containing dispersed oxide phases,Oxid. Met. 5(1), 11?47 (1972).

G. C. Wood, Fundamental factors determining the mode of scaling of heat resistant alloys,Werkst. Korros. 22, 491?503 (1971).

T. A. Ramanarayanan, M. Raghavan, and R. Petkovic-Luton, Metallic yttrium additions to high-temperature alloys: influence on Al2O3 scale properties,Oxid. Met. 22(3/4), 83?100 (1984).

T. A. Ramanarayanan, M. Raghavan, and R. Petkovic-Luton, The characteristics of alumina scales formed on Fe-based yttria dispersed alloys,J. Electrochem. Soc. 131(4), 923?931 (1984).

D. Delauney and A. M. Huntz, Mechanisms of adherence of alumina scale developed during high temperature oxidation of Fe-Ni-Cr-Al-Y alloys,J. Mater. Sci. 17(7), 2027?2036 (1982).

P. Choquet and R. Mervel, Microstructure of alumina scales formed on Ni-Co-Cr-Al alloys with and without yttrium,Mater. Sci. Eng. A 120?121, 153?159 (1989).

J. R. Nicholls and P. Hancock, Effect of active elements on mechanical properties of scales, Proc. Conf. on The Role of Active Elements in the Oxidation Behavior of High Temperature Metals and Alloys (1988), pp. 195?223.

J. Castaing, Effects of impurities on the mechanical properties of oxides, Proc. Conf. on The Role of Active Elements in the Oxidation Behavior of High Temperature Metals and Alloys (1988), pp. 67?78.

J. Nowok, Formation mechanisms of keying or pegging yttrium oxide and increased plasticity of alumina scale on Fe-Cr-Al-Y,Oxid. Met. 18(1/2), 1?17 (1982).

D. Delauney, A. M. Huntz, and P. Lacombe, Mechanical stresses developed in high temperature resistant alloys during isothermal and cyclic oxidation treatments: The influence of yttrium additions on oxide scale adherence,Corros. Sci. 20, 1109?1117 (1980).

M. H. Lagrange, A. M. Huntz, and J. H. Davidson, The influence of Y, Zr or Ti additions on the high temperature oxidation resistance of Fe-Ni-Cr-Al alloys of variable purity,Corros. Sci. 24(7), 613?627 (1984).

K. L. Luthra and C. L. Briant, Surface segregation in M-Cr-Al-Y alloys,Met. Trans. 19A(8), 2099?2108 (1988).

J. G. Smeggil, A. W. Funkenbusch, and N. S. Bornstein, A relationship between indigenous impurity elements and protective oxide scale adherence characteristics,Met. Trans. 17A(6), 923?938 (1986).

A. W. Funkenbusch, J. G. Smeggil, and N. S. Bornstein, Reactive element-sulfur interactions and oxide scale adherence,Met. Trans. 16A(6), 1164?1166 (1985).

J. G. Smeggil, Some comments on the role of yttrium in protective oxide scale adherence,Mater. Sci. Eng. 87, 261?265 (1987).

D. R. Sigler, The influence of sulfur on adherence of Al2O3 grown on Fe-Cr-Al alloys,Oxid. Met. 29(1/2), 23?43 (1988).

J. G. Smeggil and A. J. Shuskus, The oxidation behavior of some Fe-Cr-Al-Y, Fe-Cr-Al and yttrium ion-implanted Fe-Cr-Al alloys compared and contrasted,J. Vac. Sci. Technol A 4(6), 2577?2582 (1986).

K. L. Luthra and C. L. Briant, Mechanism of adhesion of alumina on M-Cr-Al-Y alloys,Oxid. Met. 26, 397?416 (1986).

K. L. Luthra and C. L. Briant, The role of surface segregation and stresses in scale adherence, Proc. Conf. on The Reactive Element Effect on High Temperature Oxidation ? after 50 years, Mater. Sci. Forum (1989), pp. 299?325.

A. S. Khanna, W. J. Quadakkers, and C. Wasserfuhr, The influence of sulfur and its interaction with yttrium on the composition, growth and adherence of oxide scales on alumina-forming alloys, Prof. Conf. on The Role of Active Elements in the Oxidation Behavior of High-Temperature Metals and Alloys (1988), pp. 155?173.

A. B. Anderson, S. P. Mehandru, and J. L. Smialek, Dopent effect of yttrium and the growth and adherence of alumina on nickel aluminum alloys,J. Elecrochem. Soc. 132(7), 1695?1701 (1985).

I. M. Allam, D. P. Whittle, and J. Stringer, The role of active elements and oxide dispersions in the development of oxidation resistant alloys and coatings, Proc. Symp. on Corrosion-Erosion Behavior of Materials, TMS-AIME (1978), pp. 103?117.

H. Hindham and D. P. Whittle, Peg formation by short circuit diffusion in Al2O3 scales containing oxide dispersions,J. Electrochem. Soc. 129(5), 1147?1149 (1982).

H. Hindham and D. P. Whittle, Mechanism of peg growth and influence on scale adhesion, Proc. JIMIS-3 High Temperature Corrosion Trans. of the Japan Inst. of Metals, Suppl. (1983), pp. 261?268.

P. Nanni, C. T. H. Stoddart, and E. D. Hondros, Grain boundary segregation and sintering in alumina,Mater. Chem. 1(4), 297?320 (1976).

K. Przybylski, A. J. Garratt-Reed, B. A. Pint, E. P. Katz, and G. J. Yurek, Segregation of Y to grain boundaries in the Al2O3 scale formed on an ODS alloy,J. Electrochem. Soc. 134(12), 3207?3208 (1987).

R. C. McCune, W. T. Donlan and R. C. Ku, Yttrium segregation and yttrium aluminum garnet precipitation at surfaces of yttrium-doped?-alumina,J. Am. Ceram. Soc. 69(8), C 196?199 (1986).

C. M. Cotell, K. Przybylski, and G. J. Yurek, Oxidation behavior of chromium and a chromium-yttrium binary alloy, Proc. Symp. on Fundamental Aspects of High-Temperature Corrosion II,Electrochem. Soc. 86(9), 103?127 (1986).

C. S. Giggins, B. H. Kear, F. S. Pettit, and J. K. Tien, Factors affecting adhesion of oxide scales on alloys,Met. Trans. 5(7), 1685?1688 (1974).

J. C. Pivin, D. Delauney, C. Roques-Carmes, A. M. Huntz, and P. Lacombe, Oxidation mechanism of Fe-20Ni-25Cr-5Al alloys?influence of small amounts of yttrium on oxidation kinetics and oxide adherence,Corros. Sci. 20, 351?373 (1980).

J. D. Cawley and J. W. Halloran, Dopant distribution in nominally-yttrium-doped sapphire,J. Am. Ceram. Soc. 69(8), 195?196 (1986).

M. M. El-Aiat and F. A. Kroeger, Yttrium, an isoelectric donor in?-alumina,J. Am. Ceram. Soc. 65(6), 280?283 (1982).

C. M. Cotell, G. J. Yurek, R. J. Hussey, D. F. Mitchell, and M. J. Graham, Growth mechanism of Cr2O3 scales on Cr and Cr implanted with Y, Proc. Symp. on High Temperature Materials Chemistry IV,85(5) (1988), pp. 268?277.

D. Delauney, A. M. Huntz, and P. Lacombe, The influence of yttrium on the sintering of alumina,J. Less Common Met. 70(1), 115?117 (1980).

W. J. Quadakkers, M. Holzbrecher, K. G. Briefs, and H. Beske, Effect of yttrium dispersions on the growth and morphology of chromia and alumina scales, Proc. Conf. on the Role of Active Elements in the Oxidation Behavior of High-Temperature Metals and Alloys (1988), pp. 155?173.

K. Przybylski and S. Mrowec, The influence of implanted yttrium on protective properties of Cr2O3 and?-Al2O3 scales formed on cobalt base alloys and?-NiAl, Proc. Int. Cong. on Metallic Corrosion, Vol. 1, (1984), pp. 47?52.

S. Mrowec and J. Jedlinski, The influence of implanted yttrium and lanthanum on the kinetics and mechanics of high-temperature oxidation of?-NiAl intermetallic compounds, Workshop on the Oxidation of High Temperature Intermetallics, TMS (1988), pp. 57?66.

S. Mrowec, A. Gil, and J. Jedlinski, The effect on certain reactive elements on the oxidation behavior of chromia- and alumina-forming alloys,Werkst. Korros. 38, 563?574 (1987).