Abstract
Powders and plasma-sprayed coatings of an Al63Cu25Fe12 alloy containing a quasi-crystalline phase were characterized by X-ray diffraction, electron microscopy, and differential thermal analysis. The relationships between powder and coating microstructures were examined. Powders were produced by casting and crushing and by gas atomization. Both techniques produced powders with multiple phases; cubic and monoclinic ternary structures were formed along with the face-centered icosahedral quasi-crystalline phase. These phases were also produced in the plasma-arc-sprayed coatings formed using different starting powders. Cooling rates during powder processing greatly affected the phase equilibria and scale of segregation of this alloy. Finer grain sizes in the plasma-sprayed coatings were obtained from the more chemically homogeneous gas-atomized powders.
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References
U. Köster, W. Liu, H. Leibertz, and M. Michel, Mechanical Properties of Quasicrystalline and Cry stalline Phases in Al-Cu-Fe Alloys,J. Non- Cryst. Solids, Vol 153/154,1993, p 446–452
J.M. Dubois, S.S. Kang, and J. Von Stebut, Quasicrystalline Low-Fric- tion Coatings,J. Mater. Sci, Vol 10,1991, p 537–541
S.S. Kang, J.M. Dubois, and J. Von Stebut, Tribological Properties of Quasicrystalline Coatings,J. Mater. Res., Vol 8 (No.10), 1993,p2471- 2481
E. Kubel, Jr., Powders Dictate Thermal Spray Coating Properties,Adv. Mater. Process., Vol 138,1990, p 24–26
D.L. Houck, Techniques for the Production of Flame and Plasma Spray Powders,Mod. Devel. Powder Metall, Vol 12-14,1980,p485–504
D. Chauxian, R.A. Zatorksi, H. Herman, and D. Oh, Oxide Powders for Plasma Spraying—The Relationship between Powder Characteristics and Coatings Properties,Thin Solid Films, Vol 118,1984, p 467–475
E. Lugscheider and I. Rass, Underwater Plasma Spraying of Stabilized Zirconia for Thermal Barrier Coatings,J. Therm. Spray Technol., Vol 1(No. 1), 1992, p 49–56
M. Yasuda, F. Weinberg, and D. Tromans, Pitting Corrosion of Al and Al- Cu Single Crystals,J. Electrochem. Soc, Vol 137,1990, p 3708–3715
F.W. Gayle, A.J. Shapiro, F.S. Biancaniello, and W.J. Boettinger, The Al-Cu-Fe Phase Diagram: 0 to 25 At. Pct Fe and 50 to 75 At. Pct Al— Equilibria Involving the Icosahedral Phase,Metall. Trans. A, Vol 23A, 1992, p 2409–2417
D. Gratias, Y. Calvayrac, J. Devaud-Rzepski, F. Faudot, M. Harmelin, A. Quivy, and P.A. Bancel, The Phase Diagram and Structures of the Ternary Al-Cu-Fe System in the Vicinity of the Icosahedral Region,J. Non-Cryst. Solids, Vol 153/154, 1993, p 482–488
J. Shield, University of Utah, private communication
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Sordelet, D.J., Kramer, M.J. & Unal, O. Effect of starting powders on the control of microstructural development of Al-Cu-Fe quasi-crystalline plasma-sprayed coatings. JTST 4, 235–244 (1995). https://doi.org/10.1007/BF02646966
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DOI: https://doi.org/10.1007/BF02646966