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The 1300 °C Isothermal Section in the Al2O3-Y2O3-Nb2O5 System

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Abstract

Phase stability in the Al2O3-Nb2O5-Y2O3 ceramic system at 1300 °C was experimentally investigated. Disks samples fabricated from homogenized powders were uniaxially pressed at room temperature and heat treated at 1300 °C for 222 hours under laboratory atmosphere to achieve thermodynamic equilibrium. As results, the microstructures of the heat-treated samples did not exhibit pseudo-ternary phases and the phase relations confirmed nine three-phase fields in the proposed isothermal section at 1300 °C.

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Acknowledgment

Authors thank the FAPEMIG-, FAPERJ-, CAPES-, CNPq- and FINEP-Brazil for financial support.

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Authors and Affiliations

  1. Universidade Federal de Alfenas, Instituto de Ciência e Tecnologia, Rod. José Aurélio Vilela, Poços de Caldas, MG, Brazil

    Denilson Wagner Zaidan, Erika Coaglia Trindade Ramos & Alfeu Saraiva Ramos

  2. Departamento de Engenharia de Materiais, Universidade de São Paulo, Polo Urbo Industrial, Lorena, SP, Brazil

    Bruno Xavier de Freitas, Gilberto Carvalho Coelho & Carlos Angelo Nunes

  3. Faculdade de Tecnologia de Resende, Universidade do Estado do Rio de Janeiro, Rod., Resende, RJ, Brazil

    Claudinei dos Santos

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  1. Denilson Wagner Zaidan
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  2. Bruno Xavier de Freitas
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  3. Gilberto Carvalho Coelho
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  5. Claudinei dos Santos
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Correspondence to Alfeu Saraiva Ramos.

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Zaidan, D.W., de Freitas, B.X., Coelho, G.C. et al. The 1300 °C Isothermal Section in the Al2O3-Y2O3-Nb2O5 System. J. Phase Equilib. Diffus. 43, 393–400 (2022). https://doi.org/10.1007/s11669-022-00973-6

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  • DOI: https://doi.org/10.1007/s11669-022-00973-6

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