title: Functionally graded porous scaffolds made of Ti-based agglomerates.
abstract: Mono- and double-layer porous scaffolds were successfully fabricated using ball-milled agglomerates of Ti and Ti-10Nb-3Mo alloy. For selectively controlling the level of porosity and pore size, the agglomerates were sieved into two different size fractions of 100-300μm and 300-500μm. Compressive mechanical properties were measured on a series of cylindrical sintered compacts with different ratios of solid core diameter to porous layer width. The graded porous scaffolds exhibited stress-strain curves typical for metallic foams with a defined plateau region after yielding. The compressive strengths and elastic moduli ranged from 300 to 700MPa and 14 to 55GPa, respectively, depending on the core diameter and the material used. The obtained properties make these materials suitable for load-bearing implant applications.
authors.affiliation: School of Engineering, Deakin University, Locked Bag 20000, Geelong, VIC 3220, Australia. Electronic address: keivan.nazari@gmail.com.
authors.forename: Keivan A
authors.initials: KA
authors.lastname: Nazari
authors.affiliation: School of Engineering, Deakin University, Locked Bag 20000, Geelong, VIC 3220, Australia.
authors.forename: Tim
authors.initials: T
authors.lastname: Hilditch
authors.affiliation: Centre for Advanced Materials Processing and Manufacture, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia.
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Dargusch
authors.affiliation: Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G9. Electronic address: alireza.nouri@utoronto.ca.
authors.forename: Alireza
authors.initials: A
authors.lastname: Nouri
mesh_terms: D000497:Alloys; D001672:Biocompatible Materials / Q000737:chemistry*; D019245:Compressive Strength; D008422:Materials Testing; D016062:Porosity; D019736:Prostheses and Implants; D013314:Stress, Mechanical; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D014025:Titanium
keywords: Agglomerates; Graded scaffolds; Implant; Porous; Titanium