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Updated: May 14, 2026

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
Published on: February 23, 2017
Effect of alumina on microstructure and compressive strength of a porous silicated hydroxyapatite
Sayed Mahmood Rabiee1, Roya Ravarian, Mohammad Mehmanchi
1Department of Mechanical Engineering, Babol (Noshirvani) University of Technology, Babol - Iran.
Purpose:
We investigated the effects of alumina addition on microstructure and compressive strength of a porous silicate substituted hydroxyapatite (Si-HA).
Methods:
Hydroxyapatite (HA) was synthesized under precipitation conditions and 10 %Wt. of sol-gel derived CaO.P2O5.SiO2 based bioglass (BG) powder was added to HA. Polyurethane foam was used to form a high porous structure with integral porosity of 70%. Phase analysis was performed using XRD and FTIR and the microstructure was studied using SEM.
Results:
The results confirmed that the Si-HA was the only formed phase before Al2O3 addition while after addition the presence of silicon-incorporated HA and alumina without any other phases was proved using these analyses.
Conclusions:
The porous structures of Si-HA and Al2O3 were synthesized using the replication technique. The compressive strength of porous bioceramics increased with increasing Al2O3 content up to 30 wt% (ANOVA, P<.05).
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