TY - GEN
T1 - Corrosion Studies of Sintered Cobalt-Based Alloys in Sodium Chloride
AU - Adams, Feyisayovictoria
AU - Moloto, Reneilwe Agrieneth
AU - Akinwamide, Samuel Olukayode
AU - Olubambi, Peter Apata
N1 - Publisher Copyright:
© 2021 Trans Tech Publications Ltd, Switzerland.
PY - 2021
Y1 - 2021
N2 - Cobalt-based alloys have recently gained so much attention in the medical field due to their improved mechanical properties such as wear resistance and high thermal stability. However, limitations in the area of corrosion has posed a great challenge, leading to further studies being carried out on the corrosion resistance of these alloys. In this study, an investigation on the corrosion resistance of sintered Co-Cr-Mo based alloys in 0.9 % NaCl solution was carried at 37oC and pH of 7.4 using potentiodynamic polarization and chronopotentiometry electrochemical techniques. The surface analysis of the alloys before and after corrosion test was carried out using scanning electron microscope (SEM). The results obtained from the electrochemical tests showed sample without titanium (Ti) addition to be more resistant to corrosion in the salt solution compared to those containing Ti. It was observed that a decrease in Cr content in the alloys resulted in an increase in corrosion rate from 0.787 to 1.381 mpy. The SEM images confirmed the presence of Cr, Co and Mo in the alloys.
AB - Cobalt-based alloys have recently gained so much attention in the medical field due to their improved mechanical properties such as wear resistance and high thermal stability. However, limitations in the area of corrosion has posed a great challenge, leading to further studies being carried out on the corrosion resistance of these alloys. In this study, an investigation on the corrosion resistance of sintered Co-Cr-Mo based alloys in 0.9 % NaCl solution was carried at 37oC and pH of 7.4 using potentiodynamic polarization and chronopotentiometry electrochemical techniques. The surface analysis of the alloys before and after corrosion test was carried out using scanning electron microscope (SEM). The results obtained from the electrochemical tests showed sample without titanium (Ti) addition to be more resistant to corrosion in the salt solution compared to those containing Ti. It was observed that a decrease in Cr content in the alloys resulted in an increase in corrosion rate from 0.787 to 1.381 mpy. The SEM images confirmed the presence of Cr, Co and Mo in the alloys.
KW - Body implant
KW - Bone replacement
KW - Corrosion
KW - Salt solution
UR - http://www.scopus.com/inward/record.url?scp=85177208797&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AST.107.144
DO - 10.4028/www.scientific.net/AST.107.144
M3 - Conference contribution
AN - SCOPUS:85177208797
SN - 9783035717969
T3 - Advances in Science and Technology
SP - 144
EP - 148
BT - Selected peer-reviewed full text papers from the Internation Conference on Addressing Societal Challenges through Innovation Engineering Research, ICASCIE 2020
A2 - Adams, Feyisayo Victoria
A2 - Ajibesin, Abel
A2 - Johnson, Temidayo Oluwagbenga
A2 - Fayomi, Ojo Sunday Issac
PB - Trans Tech Publications Ltd
T2 - International Conference on Addressing Societal Challenges through Innovation Engineering Research, ICASCIE 2020
Y2 - 9 November 2020 through 11 November 2020
ER -