Recent progress of novel biodegradable zinc alloys: from the perspective of strengthening and toughening

Zhuo, Xiaoru; Wu, Yuna; Ju, Jia; Liu, Huan; Jiang, Jinghua; Hu, Zhichao; Bai, Jing; Xue, Feng

doi:10.1016/j.jmrt.2022.01.004

Cited by 67 publications

(29 citation statements)

References 171 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The enhanced strength of the hot rolled alloys can be ascribed to precipitation strengthening, grain refinement strengthening, and dislocation strengthening. The strengthening effect of fine and dense precipitates is stronger than that of coarse and sparse particles [ 39 ]. The finer grains can exert a stronger strengthening effect than coarse grains [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Hot Rolling on the Microstructure and Mechanical Performance of a Mg-5Sn Alloy

et al. 2022

Self Cite

View full text Add to dashboard Cite

A Mg-5Sn alloy was hot rolled at 380 °C with three different rolling reductions (30%, 50%, and 70%), and its effect on the microstructure and mechanical performance was examined. Grain size decreases, whereas the area fraction of Mg2Sn particles and dislocation density increase with the increase in rolling reduction. Therefore, the yield strength (YS) and ultimate tensile strength (UTS) exhibit an ascending trend, whereas the elongation (EL) shows a descending trend with increasing rolling reduction. The alloy hot rolled for 70% possesses a high strength of 310 MPa and an EL of 8.4%. The strength enhancement is mainly ascribed to precipitation strengthening, grain refinement strengthening, and dislocation strengthening.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Hot Rolling on the Microstructure and Mechanical Performance of a Mg-5Sn Alloy

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, after immersion for 14 days, Zn coatings before and after heating show comparable anti-corrosion properties with lower corrosion current and lower corrosion rate. By extending the immersion time, Zn-based corrosion products on the surfaces of coatings can also hinder the penetration of the corrosion medium [ 6 , 7 , 8 ]. There is a difference from the reported result of significant improvements in the corrosion resistance of the Zn coating after post-heating [ 11 ].…”

Section: Resultsmentioning

confidence: 99%

“…Mg, Zn, and Fe are considered biodegradable metals, and Zn and Fe present higher corrosion resistance than Mg [ 6 , 7 ]. Zinc is an essential element in the human body, which plays a positive role in the mineralization of bones and cellular protein synthesis [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Heat Treatment on Microstructure, Mechanical Property, and Corrosion Behavior of Cold-Sprayed Zn Coating on Mg Alloy Substrate

Zhou

Chen

et al. 2022

Materials

View full text Add to dashboard Cite

The influence of post-process heat treatment on cold-sprayed Zn coatings on the Mg alloy substrate was investigated at different temperatures (150, 250, and 350 °C) and times (2, 8, and 16 h). Phase, microstructure, microhardness, and tensile strength of Zn coatings were analyzed before and after heat treatment. Corrosion properties of Zn coatings after heat treatment were investigated in simulated body fluid by using potentiodynamic polarization and immersion testing. Results show that although the heat treatment presented little effect on phase compositions of Zn coatings, the full width at half maxima of the Zn phase decreased with the heat temperature and time. Zn coatings presented comparable microstructures before and after heat treatment in addition to the inter-diffusion layers, and the inter-diffusion layer was dependent on the heat temperature and time. Both the thickness and the microhardness of inter-diffusion layers were increased with the heat temperature and time, with the largest thickness of 704.1 ± 32.4 μm and the largest microhardness of 323.7 ± 104.1 HV0.025 at 350 °C for 2 h. The microhardness of Zn coating was significantly decreased from 70.8 ± 5.6 HV0.025 to 43.9 ± 12.5 HV0.025, with the heat temperature from the ambient temperature to 350 °C, and was slightly decreased with the heat time at 250 °C. Although the tensile strength of Zn coating was slightly increased by heat treatment, with the highest value of 40.9 ± 3.9 MPa at 150 °C for 2 h, excessive heat temperature and time were detrimental to the tensile strength, with the lowest value of 6.6 ± 1.6 MPa at 350 °C for 2 h. The heat temperature and heat time presented limited effects on the corrosion current and corrosion ratio of the Zn coatings, and Zn coatings before and after heat treatment effectively hindered the simulated body fluid from penetrating into the substrate. The corrosion behavior of Zn coatings was discussed in terms of corrosion products and microstructures after immersion.

show abstract

“…Increased research interest in zinc (Zn) over other biodegradable metals is to achieve a more controlled rate of biodegradation compared to that of magnesium (Mg) and iron (Fe) without hydrogen bubble formation or the release of harmful residues or ions [ 1 , 2 ].…”

Section: Introductionmentioning

confidence: 99%

“…Due to its low strength and high brittleness, cast pure Zn is seldom employed as a biodegradable metal. However, to overcome the lack of mechanical integrity and to regulate the degradation rate, many processes are being developed, such as alloying, thermomechanical deformation, and surface modifications [ 2 ]. The most common Zn alloy systems consist of Zn-Mg-, Zn-Li-, Zn-Mn-, Zn-Ag-, and Zn-Cu-based alloys [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mg Addition and PMMA Coating on the Biodegradation Behaviour of Extruded Zn Material

et al. 2023

View full text Add to dashboard Cite

Although zinc (Zn) is one of the elements with the greatest potential for biodegradable uses, pure Zn does not have the ideal mechanical or degrading properties for orthopaedic applications. The current research aims at studying the microstructure and corrosion behaviour of pure Zn (used as a reference material) and Zn alloyed with 1.89 wt.% magnesium (Mg), both in their extruded states as well as after being coated with polymethyl methacrylate (PMMA). The grafting-from approach was used to create a PMMA covering. The “grafting-from” method entails three steps: the alkali activation of the alloys, their functionalization with an initiator of polymerization through a phosphonate-attaching group, and the surface-initiated atom transfer radical polymerisation (SI-ATRP) to grow PMMA chains. Electrochemical and immersion corrosion tests were carried out in a simulated body fluid (SBF), and both confirmed the enhanced corrosion behaviour obtained after coating. The electrochemical test revealed a decrease in the degradation rate of the alloy from 0.37 ± 0.14 mm/y to 0.22 ± 0.01 mm/y. The immersion test showed the ability of complete protection for 240 h. After 720 h of immersion, the coated alloy displays minute crevice corrosion with very trivial pitting compared to the severe localized (galvanic and pitting) corrosion type that was detected in the bare alloy.

show abstract

Recent progress of novel biodegradable zinc alloys: from the perspective of strengthening and toughening

Cited by 67 publications

References 171 publications

Effect of Hot Rolling on the Microstructure and Mechanical Performance of a Mg-5Sn Alloy

Effect of Hot Rolling on the Microstructure and Mechanical Performance of a Mg-5Sn Alloy

Influence of Heat Treatment on Microstructure, Mechanical Property, and Corrosion Behavior of Cold-Sprayed Zn Coating on Mg Alloy Substrate

Effect of Mg Addition and PMMA Coating on the Biodegradation Behaviour of Extruded Zn Material

Contact Info

Product

Resources

About