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The ceramics-based bioactive materials such as hydroxyapatite (HAp) and bioinert materials like alumina Al2O3 have been widely used in biomedical domain. Here, composites bioceramics with different alumina content HAp-x%wt.Al2O3 (x = 0, 5, 10 and 20) were produced and sintered at 1300 ℃/3h. The impact of Al2O3 addition on the structural, and mechanical properties of synthesized HAp were studied. Our results show that Al2O3 incorporation leads to decomposition of HAp into tricalcium phosphate β-TCP phase and the formation of others phases. The presence of a small amount of alumina (5%) gives highest diametral strength (σr = 32.6MPa), best Young E and shear G moduli (E = 145GPa and G = 55GPa) compared to other compositions. The main stress distribution in the elaborated bioceramics was determined by finite element modeling which is in good agreement with the experimental results.

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Hydroxyapatite/Alumina Biocomposite: Synthesis, Characterization, and Finite Element Modeling

  • 会议论文

  • 发表日期：

    2025年

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  • Mohammed Es-saddik,
  • Abdelhak Chouiekh,
  • Said Laasri,
  • Abdelaziz Laghzizil,
  • Mohamed Naji,
  • Awatef Guidara,
  • Kamel Chaari,
  • Jamel Bouaziz,
  • Abdelowahed Hajjaji,
  • Mohamed Taha

摘要

The ceramics-based bioactive materials such as hydroxyapatite (HAp) and bioinert materials like alumina Al2O3 have been widely used in biomedical domain. Here, composites bioceramics with different alumina content HAp-x%wt.Al2O3 (x = 0, 5, 10 and 20) were produced and sintered at 1300 ℃/3h. The impact of Al2O3 addition on the structural, and mechanical properties of synthesized HAp were studied. Our results show that Al2O3 incorporation leads to decomposition of HAp into tricalcium phosphate β-TCP phase and the formation of others phases. The presence of a small amount of alumina (5%) gives highest diametral strength (σr = 32.6MPa), best Young E and shear G moduli (E = 145GPa and G = 55GPa) compared to other compositions. The main stress distribution in the elaborated bioceramics was determined by finite element modeling which is in good agreement with the experimental results.