Affiliation:
1. School of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, China
Abstract
To improve the performance of porous hydroxyapatite/titanium (HA/Ti) composites, LaF3 reinforced porous HA/Ti scaffolds with a porosity of approximately 60% were prepared via a powder metallurgical method, using NH4HCO3 as the pore-forming agent. The scaffolds induced HA formation and showed high bioactivity, and the compressive strength could be regulated by changing the LaF3 dosage. When the LaF3 dosage was 0.3%, the compressive strength of the porous scaffold was 65 MPa. Moreover, LaF3 reinforced porous HA/Ti scaffolds can further induce the deposition of calcium phosphate after immersion in simulated body fluid (SBF) for 7 days, indicating that the corresponding scaffold is an ideal choice for spongy bone repair.
Funder
Sichuan Science and Technology Program
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces
Reference26 articles.
1. Titanium alloys in total joint replacement-a materials science perspective;Long;Biomaterials,1998
2. Bioactive Ti metal analogous to human cancellous bone: Fabrication by selective laser melting and chemical treatments;Pattanayak;Acta Biomater.,2011
3. Progress in the research of biomimetic modification on the surface of Ti and Ti alloy;Tang;J. Funct. Mater.,2005
4. Alkali and thermal treatment of titanium and its effect on the bioactivity;Wang;J. Funct. Mater.,2013
5. Preparation of bioactive Ti and its alloys via simple chemical surface treatment;Kim;J. Biomed. Mater. Res.,1996