Influence of Zirconium (Zr) on the microstructure, mechanical properties and corrosion behavior of biodegradable zinc-magnesium alloys

Zhou, Hanyu; Hou, Ruiqing; Yang, Junjie; Sheng, Yuqi; Li, Zhibin; Chen, Lianxi; Li, Wei; Wang, Xiaojian

doi:10.1016/j.jallcom.2020.155792

Cited by 26 publications

(17 citation statements)

References 55 publications

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“…Zn-CNTs@Ag exhibited the highest slope during the whole soaking period, indicating the fastest degradation rate. After 14 days, the pH value reached a stable state, which could be attributed to the formation of insoluble products like ZnO, Zn(OH) 2 , and ZnCO 3 …”

Section: Resultsmentioning

confidence: 99%

“…After 14 days, the pH value reached a stable state, which could be attributed to the formation of insoluble products like ZnO, Zn(OH) 2 , and ZnCO 3 . 48 Zn and Zn-CNTs@Ag were selected to observe the degradation morphologies (Figure 7g). Clearly, Zn presented a homogeneous surface covered with a small number of white particles after 7 days.…”

Section: Degradationmentioning

confidence: 99%

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Rivet-Inspired Modification of Carbon Nanotubes by In Situ-Reduced Ag Nanoparticles To Enhance the Strength and Ductility of Zn Implants

Shuai

Dong

Yang

et al. 2021

ACS Biomater. Sci. Eng.

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Zinc shows promise for bone repair applications, while its strength and ductility require to be improved. Carbon nanotubes (CNTs) are exceptional reinforcements due to their superior strength, ultrahigh Young’s modulus, and large aspect ratio. However, their strong agglomeration and weak interfacial bonding with the matrix are key bottleneck problems restricting the reinforcing effect. In this study, Ag nanoparticles were in situ reduced on CNTs and then the CNT@Ag powders were used to prepare Zn-CNT@Ag implants by laser powder bed fusion. Results showed that Ag reacted with Zn to form a “knot”-like AgZn3 phase. It had the same lattice structure (HCP) with Zn, which indicated a good lattice matching with the matrix, thus improving the dispersion of CNTs. More significantly, the knot played a “rivet” role and enhanced the load transfer capacity, which advantaged the CNT strengthening effects by assisting in transferring the load. Moreover, it enhanced the heterogeneous nucleation effects during solidification, which weakened the texture strength of the matrix and thus increased the ductility by improving the sliding capacity. The compressive yield strength, ultimate tensile strength, and elongation of the Zn-CNT@Ag implant were increased by 22, 26, and 17% in comparison to Zn-CNTs. Moreover, the Zn-CNT@Ag implant exhibited favorable antibacterial activity with a bacterial inhibition rate of 87.79%. Additionally, it also exhibited a suitable degradation rate and acceptable biocompatibility.

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Section: Resultsmentioning

confidence: 99%

Section: Degradationmentioning

confidence: 99%

Rivet-Inspired Modification of Carbon Nanotubes by In Situ-Reduced Ag Nanoparticles To Enhance the Strength and Ductility of Zn Implants

Shuai

Dong

Yang

et al. 2021

ACS Biomater. Sci. Eng.

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Section: LImentioning

confidence: 99%

“…In a number of studies, it has been shown that Zr presents desirable osteocompatibility, biocompatibility, corrosion resistance, and low ionic cytotoxicity [164][165][166]. The addition of Zr into Mg alloys can effectively refine the Mg grain size [164]. Mg alloys containing Zr often show good damping properties, lower hot-cracking tendency, corrosion resistance, and mechanical property [167].…”

Section: LImentioning

confidence: 99%

Biodegradable Magnesium Biomaterials—Road to the Clinic

Amukarimi

Mozafari

2022

Bioengineering

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In recent decades, we have witnessed radical changes in the use of permanent biomaterials. The intrinsic ability of magnesium (Mg) and its alloys to degrade without releasing toxic degradation products has led to a vast range of applications in the biomedical field, including cardiovascular stents, musculoskeletal, and orthopedic applications. With the use of biodegradable Mg biomaterials, patients would not suffer second surgery and surgical pain anymore. Be that as it may, the main drawbacks of these biomaterials are the high corrosion rate and unexpected degradation in physiological environments. Since biodegradable Mg-based implants are expected to show controllable degradation and match the requirements of specific applications, various techniques, such as designing a magnesium alloy and modifying the surface characteristics, are employed to tailor the degradation rate. In this paper, some fundamentals and particular aspects of magnesium degradation in physiological environments are summarized, and approaches to control the degradation behavior of Mg-based biomaterials are presented.

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“…As temporary implants in human body, Zn alloys have recently aroused heightened interest of researchers [1,2] . In order to become totally viable for medical application, they should possess certain mechanical properties, which generally require a uniform and refined grain microstructure.…”

Section: Introductionmentioning

confidence: 99%

Effect of a high-voltage pulsed magnetic field on microstructure, mechanical properties and corrosion behavior of as-cast biodegradable Zn-Al alloy

Yang

Cao

et al. 2022

J. Phys.: Conf. Ser.

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Zn alloys as the body’s temporary implants, it have recently aroused widespread attention by researchers in recent years. In order to meet the requirement of biomedical application, biodegradable Zn alloys should possess certain mechanical properties. To this end, it is generally required that the grain structure can be uniform and refined. In this work, a high-voltage pulsed magnetic field (PMF) was employed to homogenize and refine the as-cast biodegradable Zn-Al binary alloy. The results showed that a 6 kV PMF changes the coarse columnar Zn dendrites (739±90.9 urn) to fine spherical grains (187±16.1 urn). Accompanying the microstructural change, the compression yield strength, ultimate compression strength, tensile yield strength, ultimate tensile strength and elongation of the alloy are increased by 48.9%, >11.7%, 15.1%, 29.8% and 128%, respectively. Both the electrochemical and immersion tests show that PMF accelerates the corrosion rates of the Zn-Al alloy.

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Influence of Zirconium (Zr) on the microstructure, mechanical properties and corrosion behavior of biodegradable zinc-magnesium alloys

Cited by 26 publications

References 55 publications

Rivet-Inspired Modification of Carbon Nanotubes by In Situ-Reduced Ag Nanoparticles To Enhance the Strength and Ductility of Zn Implants

Rivet-Inspired Modification of Carbon Nanotubes by In Situ-Reduced Ag Nanoparticles To Enhance the Strength and Ductility of Zn Implants

Biodegradable Magnesium Biomaterials—Road to the Clinic

Effect of a high-voltage pulsed magnetic field on microstructure, mechanical properties and corrosion behavior of as-cast biodegradable Zn-Al alloy

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