Approaching “stainless magnesium” by Ca micro-alloying

Deng, Min; Wang, Linqian; Höche, Daniel; Lamaka, Sviatlana V.; Wang, Cheng; Snihirova, Darya; Jin, Yiming; Zhang, Yuhui; Zheludkevich, Mikhail L.

doi:10.1039/d0mh01380c

Cited by 102 publications

(23 citation statements)

References 39 publications

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“…However, the alloying design can slow the degradation rate by an order of magnitude or more, which may still not be sufficient for many applications. There are reports in the literature that micro-alloying and amorphous Mg-based glasses can further inhibit the degradation rate of Mg-based materials [ [248] , [249] , [250] ]. Regarding Mg-based metallic glasses, their single-phase structure and chemical homogeneity can minimize the galvanic corrosion effect [ 65 ].…”

Section: Comparison and Challenge In Functionalized Coatings On Mg Alloy Stentsmentioning

confidence: 99%

Advances in coatings on magnesium alloys for cardiovascular stents – A review

Zhang

Yang

et al. 2021

Bioactive Materials

109

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Magnesium (Mg) and its alloys, as potential biodegradable materials, have drawn wide attention in the cardiovascular stent field because of their appropriate mechanical properties and biocompatibility. Nevertheless, the occurrence of thrombosis, inflammation, and restenosis of implanted Mg alloy stents caused by their poor corrosion resistance and insufficient endothelialization restrains their anticipated clinical applications. Numerous surface treatment tactics have mainly striven to modify the Mg alloy for inhibiting its degradation rate and enduing it with biological functionality. This review focuses on highlighting and summarizing the latest research progress in functionalized coatings on Mg alloys for cardiovascular stents over the last decade, regarding preparation strategies for metal oxide, metal hydroxide, inorganic nonmetallic, polymer, and their composite coatings; and the performance of these strategies in regulating degradation behavior and biofunction. Potential research direction is also concisely discussed to help guide biological functionalized strategies and inspire further innovations. It is hoped that this review can give assistance to the surface modification of cardiovascular Mg-based stents and promote future advancements in this emerging research field.

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Section: Comparison and Challenge In Functionalized Coatings On Mg Alloy Stentsmentioning

confidence: 99%

Advances in coatings on magnesium alloys for cardiovascular stents – A review

Zhang

Yang

et al. 2021

Bioactive Materials

109

View full text Add to dashboard Cite

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“…Furthermore, alloying can enhance other properties such as corrosion and degradation. 55 , 56 Rationally combining elements for stability and plasmonic response may be a way to stabilize the reactive group I metals and instill some of their low losses and high quality resonances into another metal; such promising nanostructures have yet to be reported. Overall, while there is a limited track record of drastic improvements in plasmonic quality due to the fundamental nature of the materials, a new discovery that would dramatically change the quality factor has the potential to propel plasmonics to a new era.…”

Section: Discussionmentioning

confidence: 99%

Opportunities and Challenges for Alternative Nanoplasmonic Metals: Magnesium and Beyond

et al. 2022

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Materials that sustain localized surface plasmon resonances have a broad technology potential as attractive platforms for surface-enhanced spectroscopies, chemical and biological sensing, light-driven catalysis, hyperthermal cancer therapy, waveguides, and so on. Most plasmonic nanoparticles studied to date are composed of either Ag or Au, for which a vast array of synthetic approaches are available, leading to controllable size and shape. However, recently, alternative materials capable of generating plasmonically enhanced light–matter interactions have gained prominence, notably Cu, Al, In, and Mg. In this Perspective, we give an overview of the attributes of plasmonic nanostructures that lead to their potential use and how their performance is dictated by the choice of plasmonic material, emphasizing the similarities and differences between traditional and emerging plasmonic compositions. First, we discuss the materials limitation encapsulated by the dielectric function. Then, we evaluate how size and shape maneuver localized surface plasmon resonance (LSPR) energy and field distribution and address how this impacts applications. Next, biocompatibility, reactivity, and cost, all key differences underlying the potential of non-noble metals, are highlighted. We find that metals beyond Ag and Au are of competitive plasmonic quality. We argue that by thinking outside of the box, i.e., by looking at nonconventional materials such as Mg, one can broaden the frequency range and, more importantly, combine the plasmonic response with other properties essential for the implementation of plasmonic technologies.

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“…When a small amount of Nd 17 or Y/Ca 18 was added into AZ91-series alloy, the corrosion rate can be alleviated through reducing the potential difference between the secondary phases and the magnesium matrix. Another recent study 19 indicated that trace addition of Ca into ultra-pure magnesium could slow down the corrosion rate by controlling impurities and inducing a protective film. Whilst the corrosion resistance of the abovementioned alloys 17 – 19 is marginally better than HP-Mg, their mechanical properties are far from satisfaction.…”

Section: Introductionmentioning

confidence: 99%

“…Another recent study 19 indicated that trace addition of Ca into ultra-pure magnesium could slow down the corrosion rate by controlling impurities and inducing a protective film. Whilst the corrosion resistance of the abovementioned alloys 17 – 19 is marginally better than HP-Mg, their mechanical properties are far from satisfaction.…”

Section: Introductionmentioning

confidence: 99%

Towards development of a high-strength stainless Mg alloy with Al-assisted growth of passive film

Zhu

Cao

et al. 2022

Nat Commun

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Magnesium alloys with high strength and excellent corrosion resistance are always sought-after in light-weighting structural components for automotive and aerospace applications. However, for most magnesium alloys that have a high specific strength, they usually have an inferior corrosion resistance and vice versa. In this work, we successfully develop a Mg-11Y-1Al (wt. %) alloy through conventional casting, solution treatment followed by extrusion. The overall properties of this alloy feature with a corrosion rate lower than 0.2 mm y−1, high yield strength of 350 MPa and moderate tensile elongation of 8%, the combination of which shows competitive advantage over other comparative magnesium alloys in the literature. It is found that a thin and dense protective film of Y2O3/Y(OH)3 can be fast developed with the aid of Al2O3/Al(OH)3 deposition to isolate this alloy from further attack of corrosion medium. Meanwhile, the refined grains, weak texture and activation of non-basal slip systems co-contribute to the high strength and good ductility. Our findings are expected to inspire the design of next-generation high performance magnesium alloys.

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Approaching “stainless magnesium” by Ca micro-alloying

Abstract: Highly corrosion-resistant Mg is readily achievable by Ca micro-alloying, making “stainless Mg” possible. The designed lean Mg–Ca holds great promise in diverse applications, particularly biodegradable medical implants and aqueous batteries.

Cited by 102 publications

References 39 publications

Advances in coatings on magnesium alloys for cardiovascular stents – A review

Advances in coatings on magnesium alloys for cardiovascular stents – A review

Opportunities and Challenges for Alternative Nanoplasmonic Metals: Magnesium and Beyond

Towards development of a high-strength stainless Mg alloy with Al-assisted growth of passive film

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