References

(1) Stecura, S.: "Optimization of the NiCrAlY/Zr02-Y203 Thermal Barrier System", NASA Technical Memorandum 86905; April 1985.

(2) Keller, R.J.: "Research and Development for Improved Thermal Barrier Coatings: , AFWAL-TR-84-4008; April 1984.

(3) Ramadass, N. et al.: "Studies on the Metastable Phase Retention and Hardness in Zirconia Ceramics", Materials Science and Engineering, 60:65-72, 1983.

(4) Anderson, C.A. et al.: "Advanced Ceramics for Industrial/Utility Gas Turbine Applications", DOE/NASA/0110-1, NASA CR-165619: Feb. 1982.

(5) Stecura, S.: "Effects of Compositional Changes on the Performance of Thermal Barrier Coatings System", NASA-TM 78976, 1978.

(6) Miller, R.A. et al.: "Phase Distribution in Plasma Sprayed Zirconia-Yttria", Ceramic Bulletin, 10:1523-5, 1975.

(7) Miller, R.A.: "Current Status of Thermal Barrier Coatings - An Overview", Surface and Coating Technology, 30:1-11, 1987.

(8) Lugscheider, L., Eschnauer, H., Häuser, B., and Agethen, R., "Coating Morphologies of Supersonic Plasma-Sprayed Zirconium Oxides", Surface and Coatings Technology, 30, 29-40, 1987.

(9) Jayaraman, N. and Verrilli, M.J.: "Oxidation Stress in Polycrystalline Ni 200", Accepted for publication in Met. Trans.

(10) F.J. Boerio: "Raman Scattering and Vibrational Analysis of Crystaline Polymers", PhD Dissertation, Case Western Reserve University, Jan.1971.

(11) Scott, H.G.: "Phase Relationships in Zirconia-Yttria Systems", Journal of Materials Science, 10:1523-5, 1975.

(12) Herman, H., Raishanhan, N. et al.: "Phase Analysis of Plasma-Sprayed Zirconia-Yttria Coatings".

(13) Miller, R.A. et al.: "Phase Stability in Plasma-Sprayed Partially Stabilized Zirconia-Yttria", Advances in Ceramics. Vol.3, "Science and Technology of Zirco-nia", ed. by A.H. Hena and L.E. Hobbs, published by ACES.

(14) Goldberg, A.: "Effects of Repeated Thermal Cycling on the Microstructures of 300-Grade Maraging Steel", Trans. ASM, 61: 26-36, 1968.

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