Influence of zirconia addition on corrosion behavior of biomedical COCrMo Alloys(F75)

The aim of this study is to investigate the influence of zirconia addition as a particles reinforcement with various percentages (0.5,1,1.5,2,2.5,3,3.5,4,4.5,5 wt. %) on corrosion behaver of biomedical CoCrMo alloy ASTM(F75) prepared using powder metallurgy technique (P/M). Samples were sintered and...

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Bibliographic Details
Main Authors: Jamal Al-Deen, Haydar H. J., Alhusseini, Zain A. K.
Format: Conference Proceeding
Language:English
Subjects:
Cobalt base alloys
Corrosion currents
Corrosion resistance
Open circuit voltage
Powder metallurgy
Prostheses
Saliva
Sintering (powder metallurgy)
Zirconium dioxide
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Summary:The aim of this study is to investigate the influence of zirconia addition as a particles reinforcement with various percentages (0.5,1,1.5,2,2.5,3,3.5,4,4.5,5 wt. %) on corrosion behaver of biomedical CoCrMo alloy ASTM(F75) prepared using powder metallurgy technique (P/M). Samples were sintered and prepared for microstructure observation and electrochemical tests (open circuit potential and polarization) at a temperature simulating corrosive conditions (37±1) and with two various solutions (Hank’s solution and prostheses saliva). Adding zirconia to COCrMo ASTM(F75) made the OCP move in the positive direction, made the alloy more noble, also addition of zirconia improve resistance of corrosion by decreasing density of corrosion current where the improvement percentage range (96.7 to 90 %) and (87.8 to 66.8%) in artificial saliva and Hank’s solution respectively.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0156866