Microstructure, mechanical property and corrosion behavior of porous Ti–Ta–Nb–Zr
Source abstract
Abstract
In this paper, biomedical porous Ti-Nb-Ta-Zr with 40% porosity and 166 ± 21 μm macro-pore size was successfully fabricated by space holder method. The microstructure, Vickers hardness, compressive and electrochemistry behavior were studied. It results that a few second phases exist in β matrix of the porous Ti-Nb-Ta-Zr. Its Young's modulus is 0.8 GPa, close to 0.01-3 GPa for trabecular bone. The total recovery strain ratio and pseudoelastic strain ratio are 8.8% and 2.7%, respectively. It fails mainly by brittle cleavage with the fan-shaped and smooth cleaved facets. Although, local ductile fracture by a few dimples and a small amount of transcrystalline fracture with the cleavage of similarly oriented laths in a colony are observed on the fracture surface. The impedance spectrum of porous Ti-Nb-Ta-Zr has the characteristics of half capacitive arc resistance, showing good corrosion resistance in SBF solution.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Titanium Alloys Microstructure and Properties · Orthopaedic implants and arthroplasty · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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