Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate

Vida, Talita A.; Silva, Cássio; Lima, Thiago S.; Cheung, Noé; Brito, Crystopher; Garcia, Amauri

doi:10.1016/s1003-6326(21)65559-0

Cited by 12 publications

(4 citation statements)

References 39 publications

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“…Moreover, the Zn–Mg system is known to exhibit the typical type of eutectic mixtures (Zn + Mg 2 Zn 11 ). [ 43,46 ] The CaZn 13 phase could be dispersed in the Zn alloy after adding the Ca element to the Zn–Mg system. [ 47 ] Due to the fact that ZnO easily formed on the surface of the air, [ 48 ] the weak diffraction peaks of the ZnO were found in the XRD pattern.…”

Section: Resultsmentioning

confidence: 99%

Calcium–Zinc Phosphate Chemical Conversion Coating Facilitates the Osteointegration of Biodegradable Zinc Alloy Implants by Orchestrating Macrophage Phenotype

Zhao

Zuo

et al. 2023

Adv Healthcare Materials

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Zinc (Zn) alloys provide a new generation for orthopedic applications due to their essential physiological effects and promising degradation properties. However, excessive release of Zn ions (Zn2+) during degradation and the severe inflammatory microenvironment are not conducive to osseointegration, which is determined by the characteristics of the implant surface. Therefore, it is essential to modulate the release rate of Zn alloys by surface modification technology and endow them with anti‐inflammatory and osteogenic effects. In this study, two kinds of phosphate chemical conversion (PCC) coatings with different compositions and morphological structures are prepared, namely Zn–P (with disk‐like crystals) and Ca–Zn–P (with lamellar crystals). Although all the PCC‐coated Zn implants have low cytotoxicity, Ca–Zn–P show better osteoimmunomodulation effects in several aspects: the induction of the M2‐phenotype macrophage polarization and thus promotion of osteogenesis in vitro; the regulation of the bone immune microenvironment which is conducive to tissue regeneration and osseointegration in vivo; and the release of ions (through PI3K/AKT and Wnt signaling pathways) and the morphological structures (through RhoGTPase signaling pathways) act as possible mechanisms of M2 polarization. The Ca–Zn–P coating can be considered to provide new insights into bone immunomodulation and osseointegration.

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Section: Resultsmentioning

confidence: 99%

Calcium–Zinc Phosphate Chemical Conversion Coating Facilitates the Osteointegration of Biodegradable Zinc Alloy Implants by Orchestrating Macrophage Phenotype

Zhao

Zuo

et al. 2023

Adv Healthcare Materials

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“…It displays that the bare TA substrate shows diffraction lines ascribed to the Ti phase only. For the ZA substrate, the diffraction peaks of the typical intermetallic compounds Mg 2 Zn 11 and CaZn 13 were detected besides the Zn single phase, which revealed the addition of trace Mg and Ca elements from the Zn-Mg-Ca system [ 21 , 22 ]. Especially, the phase composition of coatings on both TA and ZA substrates was dominated by hopeite (Zn 3 (PO 4 ) 2 ·4H 2 O), which indicates that the substrate performance had little effect on the phase composition of the coating.…”

Section: Resultsmentioning

confidence: 99%

Effect of Substrates Performance on the Microstructure and Properties of Phosphate Chemical Conversion Coatings on Metal Surfaces

Zuo

et al. 2022

Molecules

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Phosphate chemical conversion (PCC) technology has attracted extensive attention for its ability to regulate the surface properties of biomedical metals. However, titanium (Ti)-based alloys exhibit inertia because of the native passive layer, whereas zinc (Zn)-based alloys show high activity in acidic PCC solutions. The substrate performance affects the chemical reaction in the phosphating solution, which further leads to diversity in coating properties. In this work, the zinc-phosphate (ZnP) coatings are prepared on Ti alloy (TA) and Zn alloy (ZA) substrates using the PCC method, respectively. The coatings prepared herein are detected by a scanning electron microscope (SEM), X-ray diffractometer (XRD), laser scanning confocal microscope (LSCM), universal testing machine, contact angle goniometer, and electrochemical workstation system. The results show that the substrate performance has little effect on the phase composition but can significantly affect the crystal microstructure, thickness, and bonding strength of the coatings. In addition, the ZnP coatings improve the surface roughness of the substrates and show good hydrophilicity and electrochemical corrosion resistance. The formation mechanism of the ZnP coating is revealed using potential-time curves, indicating that the metal–solution interfacial reaction plays a dominant role in the deposition process.

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“…Mn, Ca, Sr, Ag, Fe, and Zr are added to Zn–Mg alloys; Al, Mg, Sr, Cu, and Ca are added to Zn–Li alloys; Ag, Cu, Ca, Mg, and Fe are added to Zn–Mn alloys; and Ag, Mg, Ca, Fe, and Li are added to Zn–Cu alloys. Combined with different processing techniques, the mechanical properties, corrosion rate, and biocompatibility of the alloys can meet clinical requirements [ 72 , 90 , [102] , [103] , [104] , [105] , [106] , [107] , [108] , [109] ]. Research on dynamic recrystallization, strain softening, and creep effects has gradually gained attention in the field of biotechnology.…”

Section: Discussionmentioning

confidence: 99%

Structural and temporal dynamics analysis of zinc-based biomaterials: History, research hotspots and emerging trends

Yuan,

Deng,

Tan

et al. 2024

Bioactive Materials

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Tailoring microstructure and microhardness of Zn−1wt.%Mg−(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate

Cited by 12 publications

References 39 publications

Calcium–Zinc Phosphate Chemical Conversion Coating Facilitates the Osteointegration of Biodegradable Zinc Alloy Implants by Orchestrating Macrophage Phenotype

Calcium–Zinc Phosphate Chemical Conversion Coating Facilitates the Osteointegration of Biodegradable Zinc Alloy Implants by Orchestrating Macrophage Phenotype

Effect of Substrates Performance on the Microstructure and Properties of Phosphate Chemical Conversion Coatings on Metal Surfaces

Structural and temporal dynamics analysis of zinc-based biomaterials: History, research hotspots and emerging trends

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