CaSiO₃-HAp Metal-Reinforced Biocomposite Ceramics for Bone Tissue Engineering

Area of Science:

• Biomaterials Science
• Materials Engineering
• Orthopedic Surgery

Background:

• Reconstructive bone surgery relies on advanced biocompatible implants for musculoskeletal restoration.
• Titanium alloy (Ti6Al4V) is a common choice for implants due to its low density and corrosion resistance.
• Calcium silicate (CaSiO3) and hydroxyapatite (HAp) are bioactive ceramics with potential for bone repair.

Purpose of the Study:

• To investigate the use of spark plasma sintering for creating CaSiO3-HAp bioceramic composites reinforced with Ti6Al4V alloy.
• To evaluate the properties of these novel ceramic-metal biocomposites for potential use in regenerative bone surgery.

Main Methods:

• Spark plasma sintering (SPS) was employed to consolidate CaSiO3-HAp powder with a Ti6Al4V matrix.
• X-ray fluorescence, SEM, EDS, and BET analysis were used to characterize the material's composition and structure.
• Vickers microhardness and critical stress intensity factor (K_I) were assessed.

Main Results:

• Spark plasma sintering successfully produced an integral ceramic-metal biocomposite.
• The composite exhibited high Vickers microhardness values at the alloy, bioceramic, and interface regions.
• The study assessed the crack resistance (K_I) of the developed material.

Conclusions:

• Spark plasma sintering is an effective method for producing CaSiO3-HAp/Ti6Al4V biocomposites.
• These novel materials show potential for developing high-tech implants for regenerative bone surgery.
• The research offers a promising avenue for advanced orthopedic implant development.