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- W3195591488 abstract "Electrochemical degradation, mechanical strength and biocompatibility are three bottleneck issues in limiting the broad applications of Mg-based and Zn-based alloys, however, the underlining mechanisms, e.g. the influence of solute alloying and mechanical straining on degradation behaviors, is so far not well theoretically clarified. Using an ab initio informed Butler-Volmer model, we comprehensively investigate the synergistic effect of solute alloying and mechanical straining on the in vitro degradation or electrochemical corrosion in Mg-based and Zn-based alloys. Our results suggest that some elements like Li can potentially decrease the degradation rates for both alloys, while others such as Fe, Ni, Cu and Al, will play an opposite effect. By introducing the strain effects on both alloys through the scaled strain energy, we further reveal that the mechanical straining would profoundly promote the degradation rate of various Mg-based and Zn-based alloys by decreasing the activation energy barrier. An in-depth exploration of electronic structure reveals a coupled chemical-mechanical effect of solute and strain on electronic polarization at surface, which contributes to the strong (weak) degradation resistance of Zn-based (Mg-based) alloys. These findings provide valuable guidance in designing biocompatible Mg-based and Zn-based alloy with desirable degradation rate for biomedical applications." @default.
- W3195591488 created "2021-08-30" @default.
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- W3195591488 date "2020-01-01" @default.
- W3195591488 modified "2023-09-25" @default.
- W3195591488 title "Unrevealing the Intrinsically Electrochemical Mechanism on Degradation Behavior of Zn-Based and Mg-Based Alloys" @default.
- W3195591488 doi "https://doi.org/10.2139/ssrn.3656155" @default.
- W3195591488 hasPublicationYear "2020" @default.
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