Sintering of self-reinforced ceramics in the ZrO2–Y2O3–CeO2–Al2O3 system
The formation of self-reinforced composites in the ZrO2–Y2O3–CeO2–Al2O3 system is investigated. Depending on different sintering conditions, plates of CeAlO3, T-ZrO2, and α-Al2O3 are formed in the matrix based on a solid solution of ZrO2. The self-reinforced composite with fracture toughness 17–20 MPa ⋅ m0.5 is obtained in optimum sintering conditions. In this composite, α-Al2O3 plates as well as individual Ce2O3 ⋅ 11Al2O3 plates are arranged in the matrix based on T-ZrO2. Selfreinforced composites in the ZrO2–Y2O3–CeO2–Al2O3 system have a considerable potential for various engineering ceramic materials with tailored combinations of properties, e.g., for medical applications (surgical tools and bioinert implants).
KeywordsZrO2–Y2O3–CeO2–Al2O3 system self-reinforcing sintering α-Al2O3 plate zirconia
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- 1.A. V. Shevchenko, A. K. Ruban, and E. V. Dudnik, “Advanced zirconia ceramics,” Ogneupory Tekh. Keram., No. 9, 2–8 (2000).Google Scholar
- 5.A. V. Shevchenko, A. K. Ruban, E. V. Dudnik, et al., “Formation of self-reinforced gradient ceramic composites,” Functional Mat., No. 1, 67–70 (2001).Google Scholar
- 6.A. V. Shevchenko, E. V. Dudnik, V. A. Dubok, et al., “Biocompatible implants based on nanocrystalline ZrO2 powders,” Tekh. Mashinostr., No. 2 (58), 32–35 (2006).Google Scholar
- 7.G. S. Oleinik, Self-Reinforced Ceramic Materials [in Ukrainian], IPMA NASU, Kiev (1993), p. 46.Google Scholar
- 9.E. V. Dudnik, A. V. Shevchenko, A. K. Ruban, et al., “Synthesis and properties of nanocrystalline 90 wt.% ZrO2(Y2O3, CeO2)–10 wt.% A12O3 powder,” Inorg. Mat., 44, No. 4, 409–413 (2008).Google Scholar
- 10.V. V. Scorokhod and S. M. Solonin, Physical-Metallurgical Bases of Powder Sintering [in Russian], Metallurgy, Moscow (1984), p. 159.Google Scholar
- 11.Yu. D. Tret’yakov, Solid-State Reactions [in Russian], Chemistry, Moscow (1978), p. 360.Google Scholar
- 14.E. Lucchini, S. Maschio, and E. Saldor, “Influenza delle condizioni di sinterizazione sulle proprieta meccamiche di una ”lega” ZrO2–CeO2 10.3 mol.%,” Ceram. Acta., 3, No. 2, 33–39 (1991).Google Scholar
- 15.A. I. Leonov, High-Temperature Chemistry of the Cerium Oxygen Compounds [in Russian], Leningrad (1969).Google Scholar
- 16.D. Fan and L.-Q. Chen, “Computer simulation of grain growth and Ostwald ripening in alumina-zirconia two-phase composites,” J. Am. Ceram. Soc., 80, No. 7, 1773–1780 (1997).Google Scholar
- 17.S.-J. Cho, K.-H. Kim, D.-J. Kim, and K.-J. Yoon, “Abnormal grain growth at the interface of centrifugally cast alumina bilayer during sintering,” J. Am. Ceram. Soc., 83, No. 7, 1773–1776 (2000).Google Scholar
- 20.D. K. Shetty, A. R. Rosenfield, and W. H. Duckworth, “Indenter flow geometry and fracture toughness estimate for a glass-ceramic,” J. Am. Ceram. Soc., 68, No. 10, C282–C284 (1983).Google Scholar