Combinatorial development and assessment of a Zr-based metallic glass for prospective biomedical applications

Muhammad Mudasser Khan, Kashif Mairaj Deen, Waseem Haider

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

In the quest of corrosion-resistant biomaterials, the emergence of metallic glasses is a welcome stimulus, however, their progress is potentially impeded by the complex fabrication routes. This paper explores a Zr40Ti35Ni14Nb11 metallic glass, developed through combinatorial magnetron co-sputtering. Structural characterization of the system via Grazing-Incidence X-Ray Diffraction and Transmission Electron Microscopy coupled with Fourier Transformation demonstrate single phase homogeneous amorphous structure. The metallic glass, upon comparative electrochemical examination in physiological solution, displays relatively better corrosion resistance properties than conventional biomaterials, i.e. stainless steel 316L and commercially pure titanium, by an order of magnitude lower corrosion current density, (17 nA/cm2), lower passive current density (3.1 μA/cm2), invulnerability to pitting corrosion and one-order higher charge transfer resistance (6.9 MΩ·cm2). The superior corrosion resistance properties are ascribed to the synergistic effect of chemically and structurally homogeneous amorphous structure and protective passive film, enriched with chemically stable oxides of Zr and Ti. Mechanical characterization of the metallic glass via nanoindentation studies reveal high hardness (7.1 GPa) and fairly low elastic modulus (121.7 GPa), making it a candidate material for bioimplants.

Original languageEnglish
Article number119544
JournalJournal of Non-Crystalline Solids
Volume523
DOIs
StatePublished - Nov 1 2019

Keywords

  • Combinatorial development
  • Corrosion resistance
  • Implantable medical devices
  • Magnetron co-sputtering
  • Metallic glass
  • Nanoindentation

Fingerprint

Dive into the research topics of 'Combinatorial development and assessment of a Zr-based metallic glass for prospective biomedical applications'. Together they form a unique fingerprint.

Cite this