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Biomimetic calcium phosphate coating of additively manufactured porous CoCr implants
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Materials in Medcine)ORCID iD: 0000-0002-7356-3002
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
Arcam AB, Sweden.
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2015 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 353, 40-47 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this work was to study the feasibility to use a biomimetic method to prepare biomimetic hydroxyapatite (HA) coatings on CoCr substrates with short soaking times and to characterize the properties of such coatings. A second objective was to investigate if the coatings could be applied to porous CoCr implants manufactured by electron beam melting (EBM). The coating was prepared by immersing the pretreated CoCr substrates and EBM implants into the phosphate-buffered solution with Ca2+ in sealed plastic bottles, kept at 60 degrees C for 3 days. The formed coating was partially crystalline, slightly calcium deficient and composed of plate-like crystallites forming roundish flowers in the size range of 300-500 nm. Cross-section imaging showed a thickness of 300-500 nm. In addition, dissolution tests in Tris-HCl up to 28 days showed that a substantial amount of the coating had dissolved, however, undergoing only minor morphological changes. A uniform coating was formed within the porous network of the additive manufactured implants having similar thickness and morphology as for the flat samples. In conclusion, the present coating procedure allows coatings to be formed on CoCr and could be used for complex shaped, porous implants made by additive manufacturing.

Place, publisher, year, edition, pages
2015. Vol. 353, 40-47 p.
National Category
Medical Materials Biomaterials Science
Identifiers
URN: urn:nbn:se:uu:diva-256700DOI: 10.1016/j.apsusc.2015.06.056ISI: 000361220700006OAI: oai:DiVA.org:uu-256700DiVA: diva2:826415
Available from: 2015-06-25 Created: 2015-06-25 Last updated: 2017-12-04Bibliographically approved

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Lindahl, CarlXia, WeiEngqvist, Håkan

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