Tags

Type your tag names separated by a space and hit enter

Integrated experimental and theoretical approach for corrosion and wear evaluation of laser surface nitrided, Ti-6Al-4V biomaterial in physiological solution.
J Mech Behav Biomed Mater 2014; 37:153-64JM

Abstract

A laser based surface nitriding process was adopted to further enhance the osseo-integration, corrosion resistance, and tribological properties of the commonly used bioimplant alloy, Ti-6Al-4V. Earlier preliminary osteoblast, electrochemical, and corrosive wear studies of laser nitrided titanium in simulated body fluid clearly revealed improvement of cell adhesion as well as enhancement in corrosion and wear resistance but mostly lacked the in-depth fundamental understanding behind these improvements. Therefore, a novel integrated experimental and theoretical approach were implemented to understand the physical phenomena behind the improvements and establish the property-structure-processing correlation of nitrided surface. The first principle and thermodynamic calculations were employed to understand the thermodynamic, electronic, and elastic properties of TiN for enthalpy of formation, Gibbs free energy, density of states, and elastic properties of TiN were investigated. Additionally, open circuit potential and cyclic potentio-dynamic polarization tests were carried out in simulated body fluid to evaluate the corrosion resistance that in turn linked with the experimentally measured and computationally predicted surface energies of TiN. From these results, it is concluded that the enhancement in the corrosion resistance after laser nitriding is mainly attributed to the presence of covalent bonding via hybridization among Ti (p) and N (d) orbitals. Furthermore, mechanical properties, such as, Poisson׳s ratio, stiffness, Pugh׳s ductility criteria, and Vicker׳s hardness, predicted from first principle calculations were also correlated to the increase in wear resistance of TiN. All the above factors together seem to have contributed to significant improvement in both wear and corrosion performance of nitride surface compared to the bare Ti-6Al-4V in physiological environment indicating its suitability for bioimplant applications.

Authors+Show Affiliations

Laboratory of Laser Materials Processing & Synthesis, Center for Advanced Research & Technology (CART), USA; Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203-5017, USA.Laboratory of Laser Materials Processing & Synthesis, Center for Advanced Research & Technology (CART), USA; Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203-5017, USA.Laboratory of Laser Materials Processing & Synthesis, Center for Advanced Research & Technology (CART), USA; Texas Academy of Mathematics and Science (TAMS), University of North Texas, Denton, TX 76203-5017, USA.Laboratory of Laser Materials Processing & Synthesis, Center for Advanced Research & Technology (CART), USA; Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203-5017, USA.Laboratory of Laser Materials Processing & Synthesis, Center for Advanced Research & Technology (CART), USA; Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203-5017, USA.Laboratory of Laser Materials Processing & Synthesis, Center for Advanced Research & Technology (CART), USA; Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203-5017, USA. Electronic address: Narendra.Dahotre@unt.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24922620

Citation

Vora, Hitesh D., et al. "Integrated Experimental and Theoretical Approach for Corrosion and Wear Evaluation of Laser Surface Nitrided, Ti-6Al-4V Biomaterial in Physiological Solution." Journal of the Mechanical Behavior of Biomedical Materials, vol. 37, 2014, pp. 153-64.
Vora HD, Shanker Rajamure R, Dahotre SN, et al. Integrated experimental and theoretical approach for corrosion and wear evaluation of laser surface nitrided, Ti-6Al-4V biomaterial in physiological solution. J Mech Behav Biomed Mater. 2014;37:153-64.
Vora, H. D., Shanker Rajamure, R., Dahotre, S. N., Ho, Y. H., Banerjee, R., & Dahotre, N. B. (2014). Integrated experimental and theoretical approach for corrosion and wear evaluation of laser surface nitrided, Ti-6Al-4V biomaterial in physiological solution. Journal of the Mechanical Behavior of Biomedical Materials, 37, pp. 153-64. doi:10.1016/j.jmbbm.2014.05.017.
Vora HD, et al. Integrated Experimental and Theoretical Approach for Corrosion and Wear Evaluation of Laser Surface Nitrided, Ti-6Al-4V Biomaterial in Physiological Solution. J Mech Behav Biomed Mater. 2014;37:153-64. PubMed PMID: 24922620.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Integrated experimental and theoretical approach for corrosion and wear evaluation of laser surface nitrided, Ti-6Al-4V biomaterial in physiological solution. AU - Vora,Hitesh D, AU - Shanker Rajamure,Ravi, AU - Dahotre,Sanket N, AU - Ho,Yee-Hsien, AU - Banerjee,Rajarshi, AU - Dahotre,Narendra B, Y1 - 2014/05/24/ PY - 2014/03/07/received PY - 2014/05/16/revised PY - 2014/05/17/accepted PY - 2014/6/13/entrez PY - 2014/6/13/pubmed PY - 2015/3/10/medline KW - Corrosion KW - DFT KW - First-principles calculations KW - Laser gas alloying KW - Laser surface nitriding KW - Wear SP - 153 EP - 64 JF - Journal of the mechanical behavior of biomedical materials JO - J Mech Behav Biomed Mater VL - 37 N2 - A laser based surface nitriding process was adopted to further enhance the osseo-integration, corrosion resistance, and tribological properties of the commonly used bioimplant alloy, Ti-6Al-4V. Earlier preliminary osteoblast, electrochemical, and corrosive wear studies of laser nitrided titanium in simulated body fluid clearly revealed improvement of cell adhesion as well as enhancement in corrosion and wear resistance but mostly lacked the in-depth fundamental understanding behind these improvements. Therefore, a novel integrated experimental and theoretical approach were implemented to understand the physical phenomena behind the improvements and establish the property-structure-processing correlation of nitrided surface. The first principle and thermodynamic calculations were employed to understand the thermodynamic, electronic, and elastic properties of TiN for enthalpy of formation, Gibbs free energy, density of states, and elastic properties of TiN were investigated. Additionally, open circuit potential and cyclic potentio-dynamic polarization tests were carried out in simulated body fluid to evaluate the corrosion resistance that in turn linked with the experimentally measured and computationally predicted surface energies of TiN. From these results, it is concluded that the enhancement in the corrosion resistance after laser nitriding is mainly attributed to the presence of covalent bonding via hybridization among Ti (p) and N (d) orbitals. Furthermore, mechanical properties, such as, Poisson׳s ratio, stiffness, Pugh׳s ductility criteria, and Vicker׳s hardness, predicted from first principle calculations were also correlated to the increase in wear resistance of TiN. All the above factors together seem to have contributed to significant improvement in both wear and corrosion performance of nitride surface compared to the bare Ti-6Al-4V in physiological environment indicating its suitability for bioimplant applications. SN - 1878-0180 UR - https://www.unboundmedicine.com/medline/citation/24922620/Integrated_experimental_and_theoretical_approach_for_corrosion_and_wear_evaluation_of_laser_surface_nitrided_Ti_6Al_4V_biomaterial_in_physiological_solution_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1751-6161(14)00142-8 DB - PRIME DP - Unbound Medicine ER -