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Phase Equilibria in the ZrO2–La2O3–Sm2O3 System at 1100°C

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Powder Metallurgy and Metal Ceramics Aims and scope

Phase equilibria and structural transformations in the ternary ZrO2–La2O3–Sm2O3 system at 1100°C were studied by X-ray diffraction over the entire composition range. Fields of solid solutions based on the hexagonal (A) modification of La2O3, cubic (F) modification with fluorite-type structure and tetragonal (T) and monoclinic (M) modifications of ZrO2, monoclinic (B) modification of Sm2O3, and an ordered intermediate phase with pyrochlore-type structure, Ln2Zr2O7 (Py), were established to exist in the system. The boundaries of phase fields and lattice parameters of the phases were determined. In the zirconia-rich corner, solid solutions based on the tetragonal modification of ZrO2 are formed. The solubility of La2O3 in T-ZrO2 is low and amounts to ~0.5 mol.%, which is evidenced by X-ray diffraction and microstructural analyses. The solid solutions based on the tetragonal modification of ZrO2 cannot be quenched from high temperatures in the cooling conditions. The X-ray diffraction patterns recorded at room temperature show peaks of the M-ZrO2 monoclinic phase. The ordered pyrochlore-type phase, Ln2Zr2O7 (Py), is in equilibrium with all phases that exist in the ternary ZrO2–La2O3–Sm2O3 system at 1100°C and forms substitutional solid solutions with phases of the binary systems. In the system, an infinite series of solid solutions form from the Ln2Zr2O7 (Py) phase. The isothermal section of the ZrO2–La2O3–Sm2O3 phase diagram at 1100°C contains three three-phase regions (T + M + Py, T + F + Py, A + B + Py) and eight two-phase regions (A + B, A + Py, B + Py, F + Py, F + T, T + M, T + Py, Py + M). New phases were not found to form at 1100°C.

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References

  1. H.S. Zhang, Xu Qiang, F.C. Wang, and L. Liu, “Thermal conductivity of (La0.5Sm0.5)2(Zr0.9Ce0.1)2O7 ceramic for thermal barrier coatings,” Key Eng. Mater., 368–372, 1331–1333 (2008).

    Article  Google Scholar 

  2. I.V. Mazilin, L.Kh. Baldaev, and D.V. Drobot, “Thermal and heat properties of lanthanum zirconate thermal barrier materials,” Perspekt. Mater., No. 7, 21–30 (2013).

    Google Scholar 

  3. G. Erdogan, F. Ustel, K. Bobzin, M. Öte, T.F. Linke, and L. Zhao, “Influence of long time post annealing on thermal stability and thermophysical properties of plasma sprayed La2Zr2O7 coatings,” J. Alloys Compd., 695, 2549–2555 (2017).

    Article  CAS  Google Scholar 

  4. H. Zhang, K. Sun, Q. Xu, F. Wang, and L. Liu, “Thermal conductivity of (Sm1–xLax)Zr2O7 (x = 0, 0.25, 0.5, 0.75 and 1) oxides for advanced thermal barrier coatings,” J. Rare Earths, 27, 222–226 (2009).

    Article  Google Scholar 

  5. A. Rouanet, “Contribution to the study of zirconia–lanthanide oxide systems near the melting point: Theses,” Rev. Int. Hautes Temper. Refract., 8, No. 2, 161–180 (1971).

    CAS  Google Scholar 

  6. E.R. Andrievskaya and L.M. Lopato, “Approximating the liquidus surface of the ZrO2–Y2O3–La2O3 phase equilibrium diagram with reduced polynomial,” Powder Metall. Met. Ceram., 39, No. 9–10, 445–450 (2000).

    Article  CAS  Google Scholar 

  7. B. Bastide, P. Odier, and J.P. Coutures, “Phase equilibrium and martensitic transformation in lanthanadoped zirconia,” J. Am. Ceram. Soc., 71, No. 6, 449–453 (1988).

    Article  CAS  Google Scholar 

  8. S.I. Schneider and R.S. Roth, “Phase equilibria in systems involving the rare-earth oxides. Part II. Solid state reactions in trivalent rare-earth oxide systems,” J. Res. Nat. Bur. Stand. A Phys. Chem., 64A, No. 4, 317–322 (1960).

    Article  Google Scholar 

  9. M. Zinkevich, “Thermodynamics of rare earth sesquioxides,” Prog. Mater. Sci., 52, 597–647 (2007).

    Article  CAS  Google Scholar 

  10. J. Coutures, A. Rouanet, R. Verges, and M. Foex, “High-temperature study of systems formed by lanthanum sesquioxide and lanthanide sesquioxides. I. Phase diagrams (1400°C < T < T Liquide),” J. Solid State Chem., 17, No. 1–2, 171–182 (1976).

    Article  CAS  Google Scholar 

  11. J. Coutures, F. Sibieude, and M. Foex, “High-temperature study of systems formed by lanthanum sesquioxide and lanthanide sesquioxides. II. Influence of quenching on the nature of phases obtained at ambient temperature,” J. Solid State Chem., 17, No. 4, 377–384 (1976).

    Article  CAS  Google Scholar 

  12. S.A. Toropov, Phase Diagrams of Refractory Oxide Systems [in Russian], Nauka, Leningrad (1987), p. 448.

    Google Scholar 

  13. Yumin Zhang, Thermodynamic Properties of Rare Earth Sesquioxides, Supervisor: Prof. In-ho Jung, McGill University, Montreal, QC, Canada (2016).

    Google Scholar 

  14. E.R. Andrievskaya, O.A. Kornienko, and Zh.D. Bogatyreva, “Phase relations in the La2O3–Sm2O3 system at 1500 °C,” Sovr. Probl. Fiz. Materialoved., No. 25, 15–28 (2016).

    Google Scholar 

  15. O.A. Kornienko, “Interaction of lanthanum and samarium oxides at 1250°C,” Ukr. Khim. Zh., 84, No. 3, 28–33 (2018).

    CAS  Google Scholar 

  16. Chong Wang, Matsvei Zinkevich, and Fritz Aldinger, “Experimental investigation and thermodynamic modeling of the ZrO2–SmO1.5 system,” J. Am. Ceram. Soc., 90, No. 7, 2210–2219 (2007).

    Article  CAS  Google Scholar 

  17. V.B. Glushkova and L.V. Sazonova, “Effect of rare earth oxide additions on the polymorphism of zirconium dioxide,” in: Chemistry of High-Temperature Materials [in Russian], Nauka, Leningrad (1967), pp. 83–90.

  18. M. Perez and Y. Jorba, “Contribution to the study of zirconia–rare earth oxide systems,” Ann Chim., 7, No. 7–8, 479–511 (1962).

    Google Scholar 

  19. E.I. Zoz, E.N. Fomichev, A.A. Kalashnik, and G.G. Eliseeva, “On the structure and properties of REM zirconates and hafnates,” 27, No. 1, 95–99 (1982).

  20. E.R. Andrievskaya and L.M. Lopato, “Influence of composition on the T → M transformation in the systems ZrO2–Ln2O3 (Ln = La, Nd, Sm, Eu),” J. Mater. Sci., 36, No. 10, 2591–2596 (1995).

    Article  Google Scholar 

  21. E.R. Andrievskaya, O.A. Kornienko, A.V. Samelyuk, V.S. Gorodov, K.A. Cherkasova, and V.O. Zgurovets, “Interaction of samarium oxide with zirconium oxide at 1500°C,” Sovr. Probl. Fiz. Materialoved., Issue 17, 16–24 (2008).

  22. E.R. Andrievskaya, Phase Equilibria in the Hafnium, Zirconium, and Yttrium Oxides with Rare Earth Oxides [in Russian], Naukova Dumka, Kyiv (2010), p. 470.

    Google Scholar 

  23. E.R. Andrievskaya, O.A. Kornienko, V.S. Gorodov, K.A. Cherkasova, and I.S. Subota, “Interaction of cerium oxide with zirconium and lanthanum oxides at 1100°C,” Sb. Nauch. Tr. OAO UkrNII Ogneup., No. 108, 85–97 (2008).

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    O. A. Korniienko, A. I. Bykov & E. R. Andrievskaya

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  1. O. A. Korniienko
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  2. A. I. Bykov
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  3. E. R. Andrievskaya
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Correspondence to O. A. Korniienko.

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E. R. Andrievskaya is deceased

Translated from Poroshkova Metallurgiya, Vol. 59, Nos. 3–4 (532), pp. 138–148, 2020.

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Korniienko, O.A., Bykov, A.I. & Andrievskaya, E.R. Phase Equilibria in the ZrO2–La2O3–Sm2O3 System at 1100°C. Powder Metall Met Ceram 59, 224–231 (2020). https://doi.org/10.1007/s11106-020-00154-5

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