Abstract
The effect of polyethylene glycol (PEG) modification on the corrosion behavior under tensile deformation of hydroxyapatite-coated Mg-3mass% Al-1mass% Zn (HAp-AZ31) was examined in Hanks’ solution. Slow strain rate tensile (SSRT) and rapid straining electrode (RSE) tests and electrochemical impedance measurements were performed. In SSRT tests, PEG-modified HAp-AZ31 showed 1.4 times longer elongation to failure than HAp-AZ31. In RSE tests, the PEG modification showed little effect on cracking of HAp coating, while it reduced corrosion propagation from the cracks by half. The improvement in tensile elongation of HAp-AZ31 with PEG is attributed to the inhibition of corrosion propagation from coating cracks.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
