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Abstract <p>The mechanical properties of ceramic materials based on the high-temperature phases of tricalcium phosphate α-Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> and sodium renanite Ca<sub>2.5</sub>Na(PO<sub>4</sub>)<sub>2</sub>, as well as their composition in a 1 : 1 molar ratio, fabricated by stereolithography, were investigated. It was shown that the composite (biphasic) ceramic produced by pressing followed by sintering exhibited the highest density (92%) and compressive strength up to 120 MPa. For ceramic materials fabricated by 3D printing with a designed porosity of 70%, the influence of pore-space architecture on compressive mechanical properties was established. It was shown that ceramics with a Kelvin-type architecture have greater strength than ceramics with a gyroid architecture. A temperature–time profile for the thermal treatment of the printed samples was developed to remove the polymer matrix, which enabled the production of crack-free ceramics. It was demonstrated that the compressive strength of 3D-printed ceramics based on α-Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> reaches 2.5 MPa, which is acceptable for medical applications.</p>

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Study of the Mechanical Properties of Ceramic Materials Based on Ca3(PO4)2–Ca2.5Na(PO4)2 Obtained by 3D Printing

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • A. M. Murashko,
  • Ya. Yu. Filippov,
  • D. S. Larionov,
  • A. V. Garshev,
  • D. V. Prosvirnin,
  • P. V. Evdokimov,
  • V. I. Putlyaev

摘要

Abstract

The mechanical properties of ceramic materials based on the high-temperature phases of tricalcium phosphate α-Ca3(PO4)2 and sodium renanite Ca2.5Na(PO4)2, as well as their composition in a 1 : 1 molar ratio, fabricated by stereolithography, were investigated. It was shown that the composite (biphasic) ceramic produced by pressing followed by sintering exhibited the highest density (92%) and compressive strength up to 120 MPa. For ceramic materials fabricated by 3D printing with a designed porosity of 70%, the influence of pore-space architecture on compressive mechanical properties was established. It was shown that ceramics with a Kelvin-type architecture have greater strength than ceramics with a gyroid architecture. A temperature–time profile for the thermal treatment of the printed samples was developed to remove the polymer matrix, which enabled the production of crack-free ceramics. It was demonstrated that the compressive strength of 3D-printed ceramics based on α-Ca3(PO4)2 reaches 2.5 MPa, which is acceptable for medical applications.