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<p>This study investigates the physical and mechanical properties of ceramic materials with compositions 97ZrO<sub>2</sub>–3Sm<sub>2</sub>O<sub>3</sub> and 94ZrO<sub>2</sub>–6Sm<sub>2</sub>O<sub>3</sub> (mol.%), fabricated from initial nanopowders. The ceramics exhibit a two-phase structure comprising tetragonal and cubic solid solutions based on ZrO<sub>2</sub>. The Sm<sub>2</sub>O<sub>3</sub> content is shown to significantly influence the phase ratio, thereby affecting the grain structure and properties of the material. An increase in the volume fraction of the tetragonal ZrO<sub>2</sub>-based solid solution from 46 to 85 vol.% leads to an enhancement in mechanical strength from 600 to 850 MPa and in fracture toughness <i>K</i><sub>1<i>c</i></sub> from 8.0 to 10.5 MPa · m<sup>1/2</sup>.</p>

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Physical and Mechanical Characteristics of Ceramic Materials Based on Systems ZrO2–Sm2O3 with Two-Phase Composition

  • 期刊论文

  • 发表日期：

    2025年5月13日

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  • L. I. Podzorova,
  • V. P. Sirotinkin,
  • A. S. Baikin,
  • A. A. Il’icheva,
  • N. A. Michaylina,
  • E. S. Morokov,
  • O. I. Pen’kova,
  • T. R. Chueva

摘要

This study investigates the physical and mechanical properties of ceramic materials with compositions 97ZrO2–3Sm2O3 and 94ZrO2–6Sm2O3 (mol.%), fabricated from initial nanopowders. The ceramics exhibit a two-phase structure comprising tetragonal and cubic solid solutions based on ZrO2. The Sm2O3 content is shown to significantly influence the phase ratio, thereby affecting the grain structure and properties of the material. An increase in the volume fraction of the tetragonal ZrO2-based solid solution from 46 to 85 vol.% leads to an enhancement in mechanical strength from 600 to 850 MPa and in fracture toughness K1c from 8.0 to 10.5 MPa · m1/2.