Using thermochemical treatment for facilitating apatite formation on Ti-Nb-Sn alloys
- 50 Downloads
Titanium alloys are promising candidates for biomedical applications, and alloys based on the Ti-rich side of Ti-Nb-Sn system have presented material properties deserved for orthopedic implant applications. However, to our knowledge, the structural studies related to surface of these alloys are limited. Ti-18Nb-11Sn and Ti-35Nb-4Sn alloys were synthesized, and the influence of thermochemical treatment on the bioactivity was investigated. The alloys were synthesized by arc melting furnace and then were submitted to thermochemical treatment. X-ray diffraction and scanning electron micrograph analysis showed high crystallinity and maintenance of microstructure of the both alloys before and after thermochemical treatment. The results indicated that the Ti-18Nb-11Sn alloy was not demonstrated to be bioactive, while the Ti-35Nb-4Sn alloy slightly presented bioactivity, which increased after the thermochemical treatment. Meanwhile, the Ti-18Nb-11Sn alloy presented a low hardness value, making it not compatible with biomedical applications. However, the Ti-35Nb-4Sn alloy presented an acceptable hardness value for biomedical applications. We believe that the results reported herein suggest that the Ti-35Nb-4Sn alloy may be attractive for designing biomedical devices with improved performances toward the adhesion of apatite.
This work was supported by the National Natural Science Foundation of China (21703031), Shanghai Talent Development Funding. J.W. is thankful for the funds from Donghua University for Distinguished Research Fellow. The authors are pleased to acknowledge the staff of the Brazilian Synchrotron Light Laboratory (LNLS) for helping us in the beamline setup. The authors would like to thank Thiago Oliveira Lima for technical assistance and Prof. Pedro A. P. Nascente for critical reading of the manuscript. This work was financially supported by CAPES under Master Fellowship, FAPEG Project 07/2016 (23187) and CNPEM/LNLS (proposal D08A-SGM-2485).
- 2.Rodrigo LO, Marivalda de MP, Herman SM (2012) Biomateriais: Fundamentos e Aplicações, 1ed., 1. r. Guanabara Koogan, Rio de JaneiroGoogle Scholar
- 4.Mohsin TM, Zahid AK, Arshad NS (2014) Beta titanium alloys, the lowest elastic modulus for biomedical applications. Int J Chem 8(8):822–827Google Scholar
- 7.Lütjering G, Williams JC (2003) Titanium, engineering materials and processes. Springer, New YorkGoogle Scholar
- 16.Turner IG (2009) Ceramics and gasses. Biomedical materials. Springer, Chapel Hill, p 566Google Scholar
- 19.Hidetatsu T, Yu M, Atsushi N, Masayuki K, Norikazu Y, Shuji H, Naoya M, Eii I (2016) Apatite formation and biocompatibility of a low young’s modulus Ti-Nb-Sn alloy treated with anodic oxidation and hot water. PLoS ONE 11(2):0150081Google Scholar
- 26.Yoshikazu M, Mamoru T (2006) Phase transformation of quenched α″ martensite by aging in Ti–Nb alloys. Mater Sci Eng, A 315:315–319Google Scholar
- 28.Hiroaki M, Sadao W, Shui H (2007) Microstructures and mechanical properties of metastable TiNbSn alloys cold rolled and heat treated. J Alloys Compd 439(1–2):146–155Google Scholar