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<p>The CaO–MgO–SiO₂ system was investigated through the synthesis of seven samples using the solid-state method at 1100&#xa0;°C. Structural analysis revealed Merwinite (Ca<sub>3</sub>Mg<sub>2</sub>SiO<sub>8</sub>) as the dominant phase, with Forsterite (Mg<sub>2</sub>SiO<sub>4</sub>), bredigite (Ca<sub>7</sub>MgSi<sub>4</sub>O<sub>16</sub>), and Akermanite (Ca<sub>2</sub>MgSi<sub>2</sub>O<sub>7</sub>) as secondary phases in all samples except C<sub>1</sub>. Morphological analysis (SEM) showed an irregular agglomerated structure with an average grain size of 25.28&#xa0;nm, while EDX confirmed elemental composition. Raman spectroscopy identified vibrational peaks associated with these phases, supporting XRD results. In vitro testing in simulated body fluid (SBF) confirmed the biocompatibility of the samples, with a moderate pH range (7.1–7.86) and weight loss of 1.72&#xa0;mg/cm<sup>2</sup>, corresponding to an average corrosion rate of 0.23&#xa0;mm/year. Vickers hardness testing demonstrated values between 376.7 HV and 399.7 HV, indicating improved mechanical properties. These findings highlight the CaO–MgO–SiO<sub>2</sub> system as a promising bioceramic material, showcasing its potential for biomedical applications in bone regeneration and implant technology.</p> Graphical abstract <p></p>

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Design and characterization of CaO–MgO–SiO2 materials for enhanced bioactivity in biomedical applications

  • 期刊论文

  • 发表日期：

    2025年5月14日

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  • Hina Imtiaz,
  • Madeeha Riaz,
  • Mehvish Fatima

摘要

The CaO–MgO–SiO₂ system was investigated through the synthesis of seven samples using the solid-state method at 1100 °C. Structural analysis revealed Merwinite (Ca3Mg2SiO8) as the dominant phase, with Forsterite (Mg2SiO4), bredigite (Ca7MgSi4O16), and Akermanite (Ca2MgSi2O7) as secondary phases in all samples except C1. Morphological analysis (SEM) showed an irregular agglomerated structure with an average grain size of 25.28 nm, while EDX confirmed elemental composition. Raman spectroscopy identified vibrational peaks associated with these phases, supporting XRD results. In vitro testing in simulated body fluid (SBF) confirmed the biocompatibility of the samples, with a moderate pH range (7.1–7.86) and weight loss of 1.72 mg/cm2, corresponding to an average corrosion rate of 0.23 mm/year. Vickers hardness testing demonstrated values between 376.7 HV and 399.7 HV, indicating improved mechanical properties. These findings highlight the CaO–MgO–SiO2 system as a promising bioceramic material, showcasing its potential for biomedical applications in bone regeneration and implant technology.

Graphical abstract