Surface chemistry and microstructure of metallic biomaterials for hip and knee endoprostheses

Surface chemistry and microstructure of metallic biomaterials for hip and knee endoprostheses •Surface chemistry and microstructure of titanium and CoCrMo alloys, for retrieved and new implant materials, were investigated.•Microstructure is a neglected factor in implant design, although it is very important in the role of prematurely failed implants.•SEM- EDS and EBSD results show two types of carbides present in the CoCrMo alloys: M23C6 and M7C3.•Thin oxide films protect the Ti alloys from pitting, intergranular and crevice corrosion and are responsible for the excellent biocompatibility.•The thin oxide film protects properly heat-treated CoCrMo alloys from intergranular and crevice corrosion, and improves the biocompatibility. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Surface chemistry and microstructure of metallic biomaterials for hip and knee endoprostheses

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Publisher
Elsevier
Copyright
Copyright © 2017 The Authors
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2017.08.007
Publisher site
See Article on Publisher Site

Abstract

•Surface chemistry and microstructure of titanium and CoCrMo alloys, for retrieved and new implant materials, were investigated.•Microstructure is a neglected factor in implant design, although it is very important in the role of prematurely failed implants.•SEM- EDS and EBSD results show two types of carbides present in the CoCrMo alloys: M23C6 and M7C3.•Thin oxide films protect the Ti alloys from pitting, intergranular and crevice corrosion and are responsible for the excellent biocompatibility.•The thin oxide film protects properly heat-treated CoCrMo alloys from intergranular and crevice corrosion, and improves the biocompatibility.

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2018

References

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