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Effect of Iron on the Sinterability and Properties of HA/Ti-Fe Composites

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Abstract:

Dense iron-containing hydroxyapatite (HA)/titanium composites were synthesized via pressureless sintering at a relatively low temperature using nanosized HA powders and Ti-Fe mixed powders. XRD analysis showed that desirable Ti phase still remained in the HA matrix. The addition of iron improved the densification by enhancing the sinterability of titanium, and reduced the decomposition rate of HA and the interaction between HA and titanium. The mechanical tests showed that both the flexural strength and fracture toughness of the composites were significantly improved. The Ti-Fe reinforcing particles exhibited plastic stretching and bridged an advancing crack, making a significant contribution to the improvement of mechanical properties of the composites.

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Periodical:

Advanced Materials Research (Volume 898)

Pages:

271-274

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.898.271

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Online since:

February 2014

Authors:

Qing Chang*, Hong Qiang Ru, Dao Lun Chen, Jin Long Yang, S.L. Hu

Keywords:

Hydroxyapatite (HA), Iron, Mechanical Property, Sinterability

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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