Exploring the corrosion behavior of Mn-implanted biomedical Mg

Dong, Qiangsheng; Jia, Yongqiang; Ba, Zhixin; Tao, Xinyong; Wang, Zhangzhong; Xue, Feng; Bai, Jing

doi:10.1016/j.jallcom.2021.159739

Cited by 34 publications

(10 citation statements)

References 44 publications

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“…It was suggested that dual ion implantation of the metallic ion and the oxygen promote corrosion resistance. In addition, the post-oxidation treatment combined with ion implantation can be another solution [ 190 , 268 ].…”

Section: A Methodology For Improving Corrosion Resistancementioning

confidence: 99%

“…On the one hand, the cathodic activation behavior of pure Mg is inhibited in Mg–Mn alloys via forming Mn(Fe) phases, which not only creates a buffer zone with a weakened micro-galvanic effect but also inhibits the redeposition of the Fe element to the magnesium surface [ 187 , 188 , 189 ]. On the other hand, metallic Mn has a standard electrode potential closed to the Mg (Mn: −1.185, Mg: −2.372, Fe: −0.447); thereby, the cathodic activation induced by the Mn element is relatively weak, and consequently, HER is inhibited via the formation of dense Mn-rich corrosion layer [ 187 , 190 ]. Additionally, the element of Mn was reported to contribute to the formation of the transition layer at the interfaces of Fe/Mg diffusion couples at 700 °C, which effectively inhibits the diffusion of Fe atoms in the Mg–2Mn melt [ 191 ].…”

Section: Influential Factors For Corrosion Behavior In Magnesiummentioning

confidence: 99%

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Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Liu

Sun

et al. 2022

Materials

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Magnesium alloys exhibit superior biocompatibility and biodegradability, which makes them an excellent candidate for artificial implants. However, these materials also suffer from lower corrosion resistance, which limits their clinical applicability. The corrosion mechanism of Mg alloys is complicated since the spontaneous occurrence is determined by means of loss of aspects, e.g., the basic feature of materials and various corrosive environments. As such, this study provides a review of the general degradation/precipitation process multifactorial corrosion behavior and proposes a reasonable method for modeling and preventing corrosion in metals. In addition, the composition design, the structural treatment, and the surface processing technique are involved as potential methods to control the degradation rate and improve the biological properties of Mg alloys. This systematic representation of corrosive mechanisms and the comprehensive discussion of various technologies for applications could lead to improved designs for Mg-based biomedical devices in the future.

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Section: A Methodology For Improving Corrosion Resistancementioning

confidence: 99%

Section: Influential Factors For Corrosion Behavior In Magnesiummentioning

confidence: 99%

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Liu

Sun

et al. 2022

Materials

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“…Figure 8 shows that the elements Mn and Er participated in the formation of a corrosion film. Although the element Mn stabilized the film structure [37,38], the severe hydrogen evolution effect had a stronger damage effect on the film layer.…”

Section: Comparison Of Corrosion Resistances Of As-cast and Hot-rolle...mentioning

confidence: 98%

Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling Reductions

Zheng¹,

Yuan²,

Liu³

et al. 2022

Metals

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The poor corrosion resistance of magnesium alloys is one of the major obstacles to their widespread applications in the engineering field and the medical field. A hot deformation process is the main way to improve the corrosion resistance of magnesium alloys. In the present study, X-ray photoelectron spectroscopy (XPS), a scanning electron microscope (SEM), an electron probe micro-analyzer (EPMA) and X-ray diffraction (XRD) were used to investigate the micro-galvanic corrosion behavior and film protection mechanism of hot-rolled Mg-2Zn-2Er-0.3Zr-0.3Mn under 25%, 50% and 75% thickness reductions in Hank’s solution. The results revealed that the best corrosion resistance was obtained in the alloy under a 75% thickness reduction, with a corrosion rate of 0.85 mm/y. The improvement in anti-corrosion was due to the coupling effect of a refined microstructure and dense degradation film on the large deformation hot-rolled alloy. Furthermore, the elements Mn and Er participated in the film formation and stabilized the film structure.

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“…A wide range of ion implantations on biodegradable Mg alloys is reported in the literature, as shown in Table 3 . Implantation of Al, Zr, Ce, Sn, Ca, and N ions revealed that the gradient structure of ions in the metal matrix provided a passive oxide layer of the metal substrate and implanted ion [ [183] , [184] , [185] ]. The compactness of the composite oxide layer formed at the ion-implanted surface plays a crucial role to enhance the in vitro corrosion resistance.…”

Section: Coatings and Their Current Statusmentioning

confidence: 99%