Abstract
Cardiovascular stents are subjected to complex mechanical stresses in service, and local stress concentrations due to irregular stent shapes may lead to premature failure. This work investigated the corrosion behavior of pure zinc under different tensile stresses and found that stress accelerates corrosion and promotes the expansion of corrosion pits. A numerical model of the relationship between corrosion rate, corrosion current density, and tensile stress was established, and an exponential function relationship was found. This work can provide theoretical references for the investigation of the corrosion behavior of zinc-based biodegradable materials under physiological stress and possible clinical applications.
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