TY - JOUR
T1 - Mechanical properties of anodized TiNbSn alloy for biomedical applications
AU - Hatakeyama, Masahiko
AU - Masahashi, N.
AU - Michiyama, Y.
AU - Inoue, H.
AU - Hanada, S.
N1 - Funding Information:
The authors wish to acknowledge Mr. I. Nagano, Ms. M. Tateishi, Ms. Y. Matsuda, Mr. I. Narita, Mr. S. Ito, and Ms. K. Ohmura for sample preparation and characterization, and Prof. J. Saida and Dr. R. Yamada from Tohoku University for the nano-indenter experiments. This work was supported in part by a cooperative program of the Cooperative Research and Development Center for Advanced Materials, IMR, Tohoku University. This study was carried out using research resources from the Japan Society for the Promotion of Science (No. 20H02458).
Funding Information:
The authors wish to acknowledge Mr. I. Nagano, Ms. M. Tateishi, Ms. Y. Matsuda, Mr. I. Narita, Mr. S. Ito, and Ms. K. Ohmura for sample preparation and characterization, and Prof. J. Saida and Dr. R. Yamada from Tohoku University for the nano-indenter experiments. This work was supported in part by a cooperative program of the Cooperative Research and Development Center for Advanced Materials, IMR, Tohoku University . This study was carried out using research resources from the Japan Society for the Promotion of Science (No. 20H02458 ).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/9/21
Y1 - 2021/9/21
N2 - The mechanical properties of anodized TiNbSn alloy, prepared in an electrolyte of sodium tartrate acid with H2O2 under the application of a high voltage, were investigated in comparison with those of Ti6Al4V and pure Ti. The microstructure of anodized TiNbSn contains randomly distributed pores, whereas the anodic oxides on Ti6Al4V and Ti contain alternating layers with abundant and less abundant pores (mille-feuille structure). The hardness, surface roughness, and exfoliation strength of the anodized TiNbSn alloy were the highest among the samples investigated, and its Young's modulus remained unchanged after anodization. The wear resistance of the anodized TiNbSn alloy improved under both dry and wet friction conditions using Hank's balanced salt solution (HBSS). Anodized Ti generated debris on the abraded surface, and Ti6Al4V showed adhesive galling along with plastic deformation. However, no debris or galling appeared on the worn surface of the anodized TiNbSn alloy. The coefficient of friction of the anodized TiNbSn alloy under dry conditions decreased under wet conditions owing to the porous and rough surfaces allowing the penetration of liquid between the sample and abrasive SiC counterpart. We concluded that the anodized TiNbSn alloy exhibits excellent mechanical properties compared to Ti and Ti6Al4V alloy, and it could be utilized as an implant biomaterial.
AB - The mechanical properties of anodized TiNbSn alloy, prepared in an electrolyte of sodium tartrate acid with H2O2 under the application of a high voltage, were investigated in comparison with those of Ti6Al4V and pure Ti. The microstructure of anodized TiNbSn contains randomly distributed pores, whereas the anodic oxides on Ti6Al4V and Ti contain alternating layers with abundant and less abundant pores (mille-feuille structure). The hardness, surface roughness, and exfoliation strength of the anodized TiNbSn alloy were the highest among the samples investigated, and its Young's modulus remained unchanged after anodization. The wear resistance of the anodized TiNbSn alloy improved under both dry and wet friction conditions using Hank's balanced salt solution (HBSS). Anodized Ti generated debris on the abraded surface, and Ti6Al4V showed adhesive galling along with plastic deformation. However, no debris or galling appeared on the worn surface of the anodized TiNbSn alloy. The coefficient of friction of the anodized TiNbSn alloy under dry conditions decreased under wet conditions owing to the porous and rough surfaces allowing the penetration of liquid between the sample and abrasive SiC counterpart. We concluded that the anodized TiNbSn alloy exhibits excellent mechanical properties compared to Ti and Ti6Al4V alloy, and it could be utilized as an implant biomaterial.
KW - Anodization
KW - Exfoliation strength
KW - Hardness
KW - Microstructure
KW - Titanium oxide
KW - Wear resistance
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U2 - 10.1016/j.msea.2021.141898
DO - 10.1016/j.msea.2021.141898
M3 - Article
AN - SCOPUS:85112381061
SN - 0921-5093
VL - 825
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
M1 - 141898
ER -