Corrosion behavior of AZ31 magnesium alloys coated with PMMA/HA as biodegradable implants

Al-Sherify, Zainab F.; Dawood, Nawal Mohammed; Khulief, Zuheir Talib

doi:10.1016/j.matpr.2021.11.057

Cited by 6 publications

(4 citation statements)

References 33 publications

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“…With a rate of scan of + 1.0 mV/s and 0.250V for the start potential and final potential vs. the open circuit potential, potentiodynamic polarization was carried out (Eoc). The fundamental formula used to calculate the rate of corrosion on an alloy during electrochemical processes is given in [13].…”

Section: Linear Polarization Testmentioning

confidence: 99%

Effect of Varying Beryllium Addition on Microstructure, and Corrosion Behaviors of Cu-Zn-Al Shape Memory Alloys

Dawood

Salim

2023

MSF

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Due to their properties, potential for demonstrating shape memory behavior, and cheaper cost, copper-based SMA materials hold great promise for use in a variety of industrial and medical applications. This work used powder metallurgy to create Cu-based SMA using Cu-25Zn-4Al as the master alloy. The master alloy having Beryllium additions of (0.4, 0.8, and 1.2%wt.) was studied. After combining the powders, all samples were compacted using compaction stresses of (800 MPa). Then, the process of sintering in a tube furnace using argon gas has been accomplished in three stages, the first stage lasting two hours at 350°C, the second lasting two hours at 550°C, and the third lasting three hours at 900°C. All samples are treated with a solution heat treatment that involves heating them to 850 °C for an hour, quenching them quickly in saline ice water, and then aging them at 450 °C for 180 minutes. According to linear polarization tests the adding 1.2 weight percent of the Be to the base alloy (Cu-25Zn-4Al alloy) decreased corrosion rate by (95%) as compared to the base sample in a 3.5 weight percent NaCl solution. Keywords-Cu-Zn-Al shape memory alloys, corrosion behavior, shape memory properties, Beryllium, microstructure

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Section: Linear Polarization Testmentioning

confidence: 99%

Effect of Varying Beryllium Addition on Microstructure, and Corrosion Behaviors of Cu-Zn-Al Shape Memory Alloys

Dawood

Salim

2023

MSF

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“…To surpass these disadvantages, this polymer has been combined with HA, increasing the interfacial shear strength and bioactivity of the developed material [ 86 ]. Moreover, Al-Sherify et al demonstrated that the composite material had a decreased corrosion rate compared with simple polymeric scaffolds [ 87 ]. Other researchers focused on other routes, by combining PMMA with other polymers (natural or synthetic).…”

Section: Polymers Applied In Btementioning

confidence: 99%

Novel Trends into the Development of Natural Hydroxyapatite-Based Polymeric Composites for Bone Tissue Engineering

et al. 2022

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In recent years, the number of people needing bone replacements for the treatment of defects caused by chronic diseases or accidents has continuously increased. To solve these problems, tissue engineering has gained significant attention in the biomedical field, by focusing on the development of suitable materials that improve osseointegration and biologic activity. In this direction, the development of an ideal material that provides good osseointegration, increased antimicrobial activity and preserves good mechanical properties has been the main challenge. Currently, bone tissue engineering focuses on the development of materials with tailorable properties, by combining polymers and ceramics to meet the necessary complex requirements. This study presents the main polymers applied in tissue engineering, considering their advantages and drawbacks. Considering the potential disadvantages of polymers, improving the applicability of the material and the combination with a ceramic material is the optimum pathway to increase the mechanical stability and mineralization process. Thus, ceramic materials obtained from natural sources (e.g., hydroxyapatite) are preferred to improve bioactivity, due to their similarity to the native hydroxyapatite found in the composition of human bone.

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“…Wang et al [ 66 ] reported that silane-coupling agent calcium hydrogen phosphate dihydrate (SCA/DCPD) coating prepared by dip-coating method resulted in AZ60 alloy with improved corrosion resistance, whereas silane-coupling agent calcium carbonate (SCA/CaCO 3 ) coating prepared by biomimetic deposition method resulted in AZ60 alloy with improved biocompatibility. Al-Sherify et al [ 67 ] reported that polymethyl methacrylate/hydroxyapatite (PMMA/HA) composite coating on AZ31 alloy prepared by spin-coating method effectively improved the corrosion resistance in Ringer’s solution. Due to the presence of the coating, the surface of Mg alloy had a uniform particle distribution, and the surface of the primary coating had significantly more cracks and micropores than the surface of the secondary coating.…”

Section: Development Of Surface Modification Of Biodegradable Mg Alloysmentioning

confidence: 99%

Systems, Properties, Surface Modification and Applications of Biodegradable Magnesium-Based Alloys: A Review

Chen

Kolawole

et al. 2022

Materials

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In recent years, biodegradable magnesium (Mg) alloys have attracted the attention of many researchers due to their mechanical properties, excellent biocompatibility and unique biodegradability. Many Mg alloy implants have been successfully applied in clinical medicine, and they are considered to be promising biological materials. In this article, we review the latest research progress in biodegradable Mg alloys, including research on high-performance Mg alloys, bioactive coatings and actual or potential clinical applications of Mg alloys. Finally, we review the research and development direction of biodegradable Mg alloys. This article has a guiding significance for future development and application of high-performance biodegradable Mg alloys, promoting the future advancement of the magnesium alloy research field, especially in biomedicine.

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Corrosion behavior of AZ31 magnesium alloys coated with PMMA/HA as biodegradable implants

Cited by 6 publications

References 33 publications

Effect of Varying Beryllium Addition on Microstructure, and Corrosion Behaviors of Cu-Zn-Al Shape Memory Alloys

Effect of Varying Beryllium Addition on Microstructure, and Corrosion Behaviors of Cu-Zn-Al Shape Memory Alloys

Novel Trends into the Development of Natural Hydroxyapatite-Based Polymeric Composites for Bone Tissue Engineering

Systems, Properties, Surface Modification and Applications of Biodegradable Magnesium-Based Alloys: A Review

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