Accelerated biodegradation of iron-based implants via tantalum-implanted surface nanostructures.

ABSTRACT: In recent years, pure iron (Fe) has attracted significant attention as a promising biodegradable orthopedic implant material due to its excellent mechanical and biological properties. However, in physiological conditions, Fe has an extremely slow degradation rate with localized and irregular degradation, which is problematic for practical applications. In this study, we developed a novel combination of a nanostructured surface topography and galvanic reaction to achieve uniform and accelerated degradation of an Fe implant. The target-ion induced plasma sputtering (TIPS) technique was applied on the Fe implant to introduce biologically compatible and electrochemically noble tantalum (Ta) onto its surface and develop surface nano-galvanic couples. Electrochemical tests revealed that the unif

SUBMITTER: Lee MK 

PROVIDER: S-EPMC8586574 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature