Revealing the mechanical and degradation properties of the Zn-Cu-Ti alloy with ununiform heterostructure

Wu, Yue; Fu, Qingyun; Guo, Baisong; Chen, Wenlong; Xiao, Xiaoling; Li, Wei; Yu, Zhentao

doi:10.1016/j.msea.2022.143775

Cited by 11 publications

(8 citation statements)

References 46 publications

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“…Fitting Parameters of the Alloys in SBF, DMEM, and DMEM + 10%FBS Solution The charge transfer in the solution due to the electrode reaction is related to the semicircular capacitive loop at the high-frequency region, whereas the low-frequency capacitive loop is the indication of the diffusion process between the passive film and the corrosion product layer. 80 The Zn-2Cu alloy possesses the largest capacitive loop, while the Zn-2Cu-0.5Mg alloy shows the least and is consistent with the potentiodynamic polarization results (Figure 9). A higher charge transfer resistance is indicated by the higher diameter capacitive loop, resulting in a lower corrosion rate.…”

Section: Tribological Behavior Ofsupporting

confidence: 86%

“…The Zn-2Cu alloy possesses the largest capacitive loop, while the Zn-2Cu-0.5Mg alloy shows the least and is consistent with the potentiodynamic polarization results (Figure ). A higher charge transfer resistance is indicated by the higher diameter capacitive loop, resulting in a lower corrosion rate . Here, the capacitive loop diameter is maximum for the alloys immersed in DMEM and the least in the SBF solution, shown in Figure a–c.…”

Section: Resultsmentioning

confidence: 75%

“…The fitting parameters can be interpreted as R s : solution resistance, Q dl : double layer capacitance between the solution and the electrode surface, and R ct : charge transfer resistance, whereas R f and Q f are the resistance and capacitance related to the corrosion product layer on the sample surfaces, respectively. Moreover, the impedance in the low-frequency region is known as polarization resistance R p and it can be calculated by the summation of R f and R ct . This polarization resistance is inversely proportional to the corrosion rate due to the weakening of the corrosion protection layer.…”

Section: Resultsmentioning

confidence: 99%

“…A higher charge transfer resistance is indicated by the higher diameter capacitive loop, resulting in a lower corrosion rate. 80 Here, the capacitive loop diameter is maximum for the alloys immersed in DMEM and the least in the SBF solution, shown in Figure 10a the low-frequency region, |Z| indicates the corrosion resistance of the system, i.e., higher |Z| corresponds to the lower corrosion rate of the system. Meanwhile, in this frequency range, the Bode phase angle for alloys immersed in SBF is less than 60°(Figure 10g), whereas the phase angle for the alloys immersed in the DMEM solution is more than 60°, which is the indication of stable compact corrosion product layer formation over the surface, shown in Figure 10h.…”

Section: Tribological Behavior Ofmentioning

confidence: 98%

“…Moreover, the impedance in the low-frequency region is known as polarization resistance R p and it can be calculated by the summation of R f and R ct . 80 This polarization resistance is inversely proportional to the corrosion rate due to the weakening of the corrosion protection layer. Due to the surface roughness and nonhomogeneity, the ideal capacitor is replaced with the constant phase element (CPE), and the equation is Z CPE = [Q(jω) n ] −1 , where Z CPE is the CPE impedance, Q is related to the capacitance, j is the current, and ω is the frequency and −1 ≤ n ≤ 1.…”

Section: Tribological Behavior Ofmentioning

confidence: 99%

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Development of Zn-2Cu-xMn/Mg Alloys for Orthopedic Applications: Mechanical Performance to In Vitro Degradation under Different Physiological Environments

Palai,

Siva Prasad,

Satpathy

et al. 2023

ACS Biomater. Sci. Eng.

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Zinc (Zn) and its alloys are considered futuristic biodegradable materials for their acceptable mechanical properties, suitable corrosion rate, and good biocompatibility. In this study, we report newly developed biodegradable Zn-2Cu-xMn/Mg (x = 0, 0.1, and 0.5) alloys, aiming to achieve good mechanical strength with excellent elongation, desirable wear resistance, and suitable corrosion rate. The effect of Mn/Mg addition on the structural, mechanical, wear, and degradation behaviors of the Zn-2Cu-xMn/ Mg alloys was thoroughly investigated. Degradation and tribological behaviors of the alloys were explored in the presence of simulated body fluid (SBF), Dulbecco's modified Eagle medium (DMEM), and DMEM with a 10% fetal bovine serum (FBS) solution. Alloy elements and hot rolling improve their mechanical properties significantly due to precipitation hardening, grain refinement, and solid solution strengthening owing to the formation of MnZn 13 and Mg 2 Zn 11 phases. Among all the alloys, the Zn-2Cu-0.5Mn alloy achieved the highest ultimate tensile strength (UTS) of ∼405 MPa and yield strength (YS) of ∼293 MPa with an excellent elongation of ∼51%. The corrosion behavior of the alloys as determined by a potentiodynamic polarization study under different solutions follows the sequence Zn-2Cu < Zn-2Cu-0.5Mn < Zn-2Cu-0.1Mn < Zn-2Cu-0.1Mg < Zn-2Cu-0.5Mg. The corrosion rate by immersion testing for 30 and 90 days also follows the same sequence. The corrosion rate in different solutions follows the order SBF > DMEM + 10%FBS > DMEM. The addition of Mn/Mg also improves the wear resistance and slows the wear rate under wet conditions. The bending test results also indicate the highest bending strength of ∼375 MPa for the Zn-2Cu-0.5Mn alloy, among all the alloys. The bending and tensile strengths deteriorate continuously after the immersion for 30 and 90 days in the solution of SBF, DMEM, and DMEM + 10%FBS. Therefore, the Zn-2Cu-xMn/Mg (x = 0.1 and 0.5) alloys can be considered potential biodegradable implant materials.

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Section: Tribological Behavior Ofsupporting

confidence: 86%

Section: Resultsmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 99%

Section: Tribological Behavior Ofmentioning

confidence: 98%

Section: Tribological Behavior Ofmentioning

confidence: 99%

See 3 more Smart Citations

Development of Zn-2Cu-xMn/Mg Alloys for Orthopedic Applications: Mechanical Performance to In Vitro Degradation under Different Physiological Environments

Palai,

Siva Prasad,

Satpathy

et al. 2023

ACS Biomater. Sci. Eng.

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ZnP‐Coated Zn1Cu0.1Ti Membrane with High Strength‐Ductility, Antibacterial Ability, Cytocompatibility, and Osteogenesis for Biodegradable Guided Bone Regeneration Applications

Tong

Han

Zhu

et al. 2023

Adv Funct Materials

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Zinc (Zn) and its alloys have recently gained research interest due to their good biosafety, biological function, biodegradability, and formability. Zincphosphate (ZnP) coating has been shown to improve the corrosion resistance and biocompatibility of Zn alloys. Here, a biodegradable ZnP-coating on Zn1Cu0.1Ti (ZCT) membrane with high strength-ductility and mechanical stability, suitable degradation rate, effective antibacterial ability, excellent in vitro and in vivo cytocompatibility, and osteogenesis is reported. The ZnPcoated ZCT exhibits high strength-ductility with a yield strength of 264 MPa, ultimate tensile strength of 312 MPa, elongation of 36.0%, and high mechanical stability before and after 30 d immersion in Hanks' and AS solutions, all of which are higher than those of ZCT. The ZnP coating shows good deformation resistance, healing effect, and bond strength with the substrate, meeting the clinical contour shaping requirements. The ZnP-coated ZCT membrane sample shows higher cell viability toward MC3T3-E1 and MG-63 cells, osteogenic and mitochondrial quality-control properties in vitro than those of the ZCT sample. Using a rat calvarial defect model, the ZnP-coated ZCT membrane shows complete biosafety and considerable osteogenesis performance. Overall, the ZnP-coated ZCT membrane is recommended as a promising biodegradable implant material for oral guided bone regeneration application.

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Surface‐Roughness‐Induced Plasticity in a Biodegradable Zn Alloy

Shi

et al. 2022

Advanced Materials

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Improving plasticity has been an eternal theme of developing metallic materials. It is difficult to increase room‐temperature elongation of metallic materials over 100% without sacrificing strength using existing methods. Herein, surface‐roughness‐induced plasticity (SRIP) is discovered in biodegradable Zn–0.4Mn alloy. Surprisingly, in the good surface range that meets the international standard ISO 6892, reducing surface roughness results in significant increase in plasticity without loss of strength. From unground to 5000# sandpaper ground states, the surface roughness Ra of the alloy decreases from 0.63 to 0.05 µm, while its room temperature elongation increases from 74% to 143%. SRIP is the synergistic result of increased microstructure damage tolerance and decreased surface roughness. It provides a new method for improving plasticity.

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Revealing the mechanical and degradation properties of the Zn-Cu-Ti alloy with ununiform heterostructure

Cited by 11 publications

References 46 publications

Development of Zn-2Cu-xMn/Mg Alloys for Orthopedic Applications: Mechanical Performance to In Vitro Degradation under Different Physiological Environments

Development of Zn-2Cu-xMn/Mg Alloys for Orthopedic Applications: Mechanical Performance to In Vitro Degradation under Different Physiological Environments

ZnP‐Coated Zn1Cu0.1Ti Membrane with High Strength‐Ductility, Antibacterial Ability, Cytocompatibility, and Osteogenesis for Biodegradable Guided Bone Regeneration Applications

Surface‐Roughness‐Induced Plasticity in a Biodegradable Zn Alloy

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