TY - JOUR
T1 - Effects of microalloying on the microstructure, tribological and electrochemical properties of novel Ti-Mo based biomedical alloys in simulated physiological solution
AU - Nnamchi, Paul S.
AU - Younes, Abdurauf
AU - Fasuba, Omoniyi A.
AU - Obayi, Camillus Sunday
AU - Offor, Peter O.
PY - 2022/10/2
Y1 - 2022/10/2
N2 - The tribological characteristics of Ti alloys containing beta stabilisers such as Mo, Nb, Ta, Zr, and Sn have seldom been explored despite their applicability for metallic biomaterials requiring good wear and surface degradation resistance. Using sliding wear contact, the influence of these alloying components on Ti-Mo biomedical alloys in simulated physiological fluid was examined. Microalloying influences microstructure, hardness, and wear. Nb-microalloyed samples with metastable -phase increased anti-wear and frictional resistance while keeping frictional resistance. Orthorhombic α′′phase-rich samples were the least wear resistance. The findings contribute to a better understanding of the interaction between Ti-based biomaterials' micro-alloying and their tribological properties. The stabilised TiMo (Nb,Ta, Zr, or Sn) alloys outperformed CP-Ti, the original Ti92Mo8, and the regularly used biomedical Ti6Al-4V alloys in terms of corrosion resistance. This indicates that alloying tuning may be used to enhance biomedical prosthesis and increase the service life of bio-implants and components.
AB - The tribological characteristics of Ti alloys containing beta stabilisers such as Mo, Nb, Ta, Zr, and Sn have seldom been explored despite their applicability for metallic biomaterials requiring good wear and surface degradation resistance. Using sliding wear contact, the influence of these alloying components on Ti-Mo biomedical alloys in simulated physiological fluid was examined. Microalloying influences microstructure, hardness, and wear. Nb-microalloyed samples with metastable -phase increased anti-wear and frictional resistance while keeping frictional resistance. Orthorhombic α′′phase-rich samples were the least wear resistance. The findings contribute to a better understanding of the interaction between Ti-based biomaterials' micro-alloying and their tribological properties. The stabilised TiMo (Nb,Ta, Zr, or Sn) alloys outperformed CP-Ti, the original Ti92Mo8, and the regularly used biomedical Ti6Al-4V alloys in terms of corrosion resistance. This indicates that alloying tuning may be used to enhance biomedical prosthesis and increase the service life of bio-implants and components.
KW - Miccroalloying
KW - Ti-Mo based biomaterials
KW - electrochemical property
KW - friction-resistance
KW - simulated body fluid
KW - titanium alloys
KW - tribology
KW - wear resistance
UR - http://www.scopus.com/inward/record.url?scp=85132317231&partnerID=8YFLogxK
U2 - 10.1080/17515831.2022.2086780
DO - 10.1080/17515831.2022.2086780
M3 - Article
SN - 1751-5831
VL - 16
SP - 317
EP - 332
JO - Tribology - Materials, Surfaces and Interfaces
JF - Tribology - Materials, Surfaces and Interfaces
IS - 4
ER -