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Interpretation of Alumina/Yttrium-Aluminum Garnet Orientation Relationships by Geometric Criteria

Published online by Cambridge University Press:  26 February 2011

R.S. Hay  and
L.E. Matson
R.S. Hay
Affiliation:
Wright Research and Development Center, WPAFB OH 45433
L.E. Matson
Affiliation:
Wright Research and Development Center, WPAFB OH 45433
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Abstract

Geometric criteria for low interface energy and interface structure were tested for the cubic-rhombohedral system YAG/alumina. Orientation relationships near (111){110}a // (112){110}y and facets on (111)a(112)y were observed in both sol-gel derived composites and directionally solidified eutectic composites. The ΣYAG=12 near-CSL of 2{111}, {110}, {112} was inferred to be the preferred structural unit. Dislocations with b=1/3{111}a and b=1/2{110}a were observed and inferred to accomodate deviation from the structural unit, respectively. The {110}a,y direction met some of the criteria for an invariant line. Although the OR was explained by geometric criteria it would have been difficult to predict it with such criteria

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 209: Symposium K – Defects in Materials , 1990 , 731
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

1. Sutton, A.P. and Balluffi, R.W., Acta metall., 35 {9}, 2177 (1987).CrossRefGoogle Scholar
2. Kato, M., Wada, M., Sato, A., and Mori, T., Acta metall. 37 {3}, 749 (1989).CrossRefGoogle Scholar
3. Dahmen, U., Acta metall. 30, 63–73 (1982).CrossRefGoogle Scholar
4. Luo, C.P. and Weatherly, G.C., Acta metall. 35 {8}, 1963–1972 (1987).CrossRefGoogle Scholar
5. Bollmann, W., Crystal Lattices, , Interfaces, , and Matrices, , published by the author 1982).Google Scholar
6. Grimmer, H. and Bonnet, R., Philos. Mag. A., 61 {3}, 493 (1990).Google Scholar
7. Yoder, H.S. and Keith, M.L., Am. Mineral., 36, 51933 (1951).Google Scholar
8. Petot-Ervas, J., Deweirder, D., Loudjani, M., Lesage, B., and Huntz, A.M., Nonstoichlometric Oxides, Advances in Ceramics Volume 23, edited by Catlow, C.R.A. and Mackrodt, W.C., American Ceramic Society, 125 (1987).Google Scholar
9. Mazdiyasni, K.S., Ceramics Int., 8 {21}, 42 (1982).Google Scholar
10. Brown, L.M. and Mazdiyasni, K.S., inorganic Chem., 9 {12} 2783 (1970).Google Scholar
11. Yoldas, B.E., Am. Cer. Soc. Bull., 54, 286 (1975).Google Scholar
12. Yoldas, B.E., Am. Cer. Soc. Bull., 54, 289 (1975).Google Scholar
13. Hay, R.S., Hermes, E.E., and Jepsen, K.A., Ceramic Transactions (in press).Google Scholar
14. Caslavsky, J.L. and Viechnicki, D.J., J. Mater. Sci., 15, 1709 (1980).CrossRefGoogle Scholar
15. Mah, T., Parthasarathy, T.A., and Matson, L.E., Ceramic Engineering and Science Proceedings 11, (in press).Google Scholar
16. Hay, R.S. and Matson, L.E, submitted to Acta Metallurgica.Google Scholar
17. Song, H. and Coble, R.L., J. Am. Ceram. Soc., 73 {7}, 2077 (1990).CrossRefGoogle Scholar
18. Cahn, J.W. and Kalonji, G., Solid – Solid Phase Transformations, AIME, Aaronson, H.I., Laughlin, D.E., Sekerka, R.F., and Wayman, C.M., eds, 3–14 (1982).Google Scholar
19. Martikainen, H.O., Korhonen, M.A., and Lindroos, V.K., Phys. Stat. Sol. A, 75, 559 (1983).CrossRefGoogle Scholar
20. Bonnet, R. and Cousineau, E., Acta cryst. A33, 850–856 (1977).CrossRefGoogle Scholar
21. Balluffi, R.W., Brokman, A., and King, A.H., Acta metall. 30, 1453–1470 (1982).Google Scholar
22. Wolf, D., Acta metall. mater. 38 {5}, 781 (1990).CrossRefGoogle Scholar
23. Smith, D.A. and Pond, R.C., int. Met. Rev. 205, 61 (1976).Google Scholar
24. Grimmer, H., Scripta metall. 8, 1221 (1974).Google Scholar