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Research Progress Regarding Interfacial Characteristics and the Strengthening Mechanisms of Titanium Alloy/Hydroxyapatite Composites

1
School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
2
Department of Chemistry and Physics, Fayetteville State University, Fayetteville, NC 28301, USA
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(8), 1391; https://doi.org/10.3390/ma11081391
Received: 11 July 2018 / Revised: 2 August 2018 / Accepted: 3 August 2018 / Published: 9 August 2018
Titanium alloy/Hydroxyapatite (HA) composites have become a hot research topic in biomedical materials, while there are some challenges concerning bioactivity and mechanical properties such as low interface adhesion at the interface between metal and ceramic, complex interfacial reactions, and so on. Nevertheless, composites with reinforced phases can reach special properties that meet the requirements of biomedical materials due to the strong interfacial interactions between reinforcing phases (nano-carbon, partial oxides, and so on) and Titanium alloys or HA. This review summarizes the interface properties and mechanisms of Titanium alloy/HA composites, including interfacial bonding methods, strengthening and toughening mechanisms, and performance evaluation. On this basis, the interface characteristics and mechanisms of the Titaniumalloy/HA composites with enhanced phase are prospected. The results show that the interfacial bonding methods in the Titanium alloy/HA composites include chemical reactions and mechanical effects. The strengthening and toughening mechanisms contain grain refinement strengthening, second phase strengthening, solution strengthening, cracks and pulling out mechanisms, etc. This review provides a guidline for the fabrication of biocomposites with both mechanical properties and bioactivity. View Full-Text
Keywords: Ti/HA; interface characteristic; biocompatibility; mechanical properties; strengthening mechanism Ti/HA; interface characteristic; biocompatibility; mechanical properties; strengthening mechanism
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Li, F.; Jiang, X.; Shao, Z.; Zhu, D.; Luo, Z. Research Progress Regarding Interfacial Characteristics and the Strengthening Mechanisms of Titanium Alloy/Hydroxyapatite Composites. Materials 2018, 11, 1391.

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