Model of heterogeneous material dissolution in simulated biological fluid

A. G. Knyazeva, E. Y. Gutmanas

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

Abstract

In orthopedic research, increasing attention is being paid to bioresorbable/biodegradable implants as an alternative to permanent metallic bone healing devices. Biodegradable metal based implants possessing high strength and ductility potentially can be used in load bearing sites. Biodegradable Mg and Fe are ductile and Fe possess high strength, but Mg degrades too fast and Fe degrades too slow, Ag is a noble metal and should cause galvanic corrosion of the more active metallic iron-thus, corrosion of Fe can be increased. Nanostructuring should results in higher strength and can result in higher rate of dissolution/degradation from grain boundaries. In this work, a simple dissolution model of heterogeneous three phase nanocomposite material is considered-two phases being metal Fe and Ag and the third-nanopores. Analytical solution for the model is presented. Calculations demonstrate that the changes in the relative amount of each phase depend on mass exchange and diffusion coefficients. Theoretical results agree with preliminary experimental results.

Original languageEnglish
Title of host publicationNew Operational Technologies, NEWOT 2015
Subtitle of host publicationProceedings of the 5th International Scientific Conference "New Operational Technologies"
PublisherAmerican Institute of Physics Inc.
Volume1688
ISBN (Electronic)9780735413351
DOIs
Publication statusPublished - 17 Nov 2015
Event5th International Scientific Conference on New Operational Technologies, NEWOT 2015 - Tomsk, Russian Federation
Duration: 29 Sep 201530 Sep 2015

Conference

Conference5th International Scientific Conference on New Operational Technologies, NEWOT 2015
CountryRussian Federation
CityTomsk
Period29.9.1530.9.15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Knyazeva, A. G., & Gutmanas, E. Y. (2015). Model of heterogeneous material dissolution in simulated biological fluid. In New Operational Technologies, NEWOT 2015: Proceedings of the 5th International Scientific Conference "New Operational Technologies" (Vol. 1688). [030019] American Institute of Physics Inc.. https://doi.org/10.1063/1.4936014