Microstructure in Pressureless-Sintered Iron-Containing Hydroxyapatite/Titanium Composites

Abstract:

Pure hydroxyapatite (HA) is brittle and it cannot be directly used for the load-bearing biomedical applications. Aim of this paper was to present a new iron-containing hydroxyapatite/titanium composites synthesized via pressureless sintering at a relatively low temperature of 1000°C using nano-sized HA powders and Ti-33%Fe mixed powders. The microstructure and composition of the new type composites were evaluated. The results showed that the uniformly distributed reinforcing particles had a unique and favorable core/shell microstructure after sintering that consisted of outer titanium and inner iron. The mechanism for the formation of the core/shell structure was discussed. The addition of iron reduced the decomposition rate of HA and the interaction between HA and titanium.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 1582-1587
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.1582
• Online since: November 2010
• Authors: Qing Chang, Hong Qiang Ru, Dao Lun Chen
• Keywords: Composite, Hydroxyapatite (HAP), Microstructure, Pressureless Sintering

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