Answers are grounded in this paper and cite their sources.
Findings reveal reduced corrosion rates in duplex PIII treated CoCr alloys, suggesting better longevity for biomedical applications.
The formation of expanded austenite in CoCr alloys is a well established process for forming hard andwear resistant surfaces for biomedical applications. However, even nitrogen implantation at reducedtemperatures of 350 °C, where no CrN formation is observed, leads to a significant increase in thecorrosion current, together with selective release of Co ions. By using a duplex nitrogen/oxygen process,a strong reduction of the corrosion rate is possible when the processing temperatures are limited to300–350 °C. Detailed investigations into the chemical environment imply that a strong influence of grainboundaries or defects on the corrosion rate exists, which is not visible when measuring XPS spectraacross a sufficiently large surface area.
No takes yet. Share an insight, caveat, or question.
Mändl et al. (2013) studied this question.
Synapse has enriched 8 closely related papers on similar clinical questions. Consider them for comparative context: