The influence of alternating cyclic dynamic loads with different low frequencies on the bio-corrosion behaviors of AZ31B magnesium alloy <i>in vitro</i>.

During the immersion period of 24–120 h, the R p of the samples showed a decreasing trend on the whole, and there were some fluctuations, indicating that the rates of corrosion products formation and deposition on the surface of the magnesium alloy were lower than the dissolution and destruction rates of the film.

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When the frequency of the dynamic load increases, the polarization resistance of the magnesium alloy sample as a whole also shows an increasing trend, and at the same time, the fluctuation of R p value in the later stage of degradation is more obvious, indicating that higher frequency shows more significant impact to the corrosion of the magnesium alloy.

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