High-strength bioresorbable Fe-Ag nanocomposite scaffolds: Processing and properties

Aliya Sharipova, Sergey G. Psakhie, Sanjaya K. Swain, Elazar Y. Gutmanas, Irena Gotman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

High strength ductile iron-silver nanocomposite scaffolds were fabricated employing high energy attrition milling of micron-submicron powders, followed by cold sintering/high pressure consolidation. Particulate leaching method with soluble Na2SO4 and K2CO3 salts as porogens was used to create scaffolds with 50, 55, 60 and 73% volume fraction of pores. Part of specimens was annealed at 600, 800 and 900°C. Specimens were characterized employing X-ray diffraction, scanning electron microscopy (SEM) with electron probe microanalysis (EDS) and high resolution SEM. Mechanical properties were measured in compression and permeability was measured in permeameter based on Darcy's law. Scaffolds with 50% and 55% porosity exhibited high compressive strength (18-22 MPa), compressive strength of 8-12 MPa was observed for scaffolds with 73% porosity. Treatments at 800 and 900°C result in increase of strength and ductility with some coarsening of microstructure. Best combination of compressive strength (15 MPa) and permeability (0.6-6 cm2) is close to the range of trabecular bone.

Original languageEnglish
Title of host publicationAdvanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
PublisherAmerican Institute of Physics Inc.
Volume1683
ISBN (Electronic)9780735413306
DOIs
Publication statusPublished - 27 Oct 2015
EventInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015 - Tomsk, Russian Federation
Duration: 21 Sep 201525 Sep 2015

Conference

ConferenceInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015
CountryRussian Federation
CityTomsk
Period21.9.1525.9.15

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Sharipova, A., Psakhie, S. G., Swain, S. K., Gutmanas, E. Y., & Gotman, I. (2015). High-strength bioresorbable Fe-Ag nanocomposite scaffolds: Processing and properties. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures (Vol. 1683). [020244] American Institute of Physics Inc.. https://doi.org/10.1063/1.4932934