Preparation and Performance of Plasma/Polymer Composite Coatings on Magnesium Alloy

Bakhsheshi-Rad, H.R.; Hamzah, Esah; Bagheriyan, S.; Daroonparvar, Mohammadreza; Kasiri‐Asgarani, Masoud; Shah, A.; Medraj, Mamoun

doi:10.1007/s11665-016-2247-5

Cited by 13 publications

(3 citation statements)

References 43 publications

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“…The results revealed that hardness was not significantly changed between uncoated and duplex coated samples. It is reported that the PCL coating is not efficient for enhancing the strength of the substrate [ 32 , 33 ]. It is also established that PCL coatings on Mg alloy decreased the degradation rate while sustaining the bulk mechanical properties on degradation [ 17 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

Development and properties of duplex MgF2/PCL coatings on biodegradable magnesium alloy for biomedical applications

et al. 2018

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The present work addresses the performance of polycaprolactone (PCL) coating on fluoride treated (MgF2) biodegradable ZK60 magnesium alloy (Mg) for biomedical application. MgF2 conversion layer was first produced by immersing Mg alloy substrate in hydrofluoric acid solution. The outer PCL coating was then prepared using dip coating technique. Morphology, elements profile, phase structure, roughness, mechanical properties, invitro corrosion, and biocompatibility of duplex MgF2/PCL coating were then characterized and compared to those of fluoride coated and uncoated Mg samples. The invivo degradation behavior and biocompatibility of duplex MgF2/PCL coating with respect to ZK60 Mg alloy were also studied using rabbit model for 2 weeks. SEM and TEM analysis showed that the duplex coating was uniform and comprised of porous PCL film (~3.3 μm) as upper layer with compact MgF2 (~2.2 μm) as inner layer. No significant change in microhardness was found on duplex coating compared with uncoated ZK60 Mg alloy. The duplex coating showed improved invitro corrosion resistance than single layered MgF2 or uncoated alloy samples. The duplex coating also resulted in better cell viability, cell adhesion, and cell proliferation compared to fluoride coated or uncoated alloy. Preliminary invivo studies indicated that duplex MgF2/PCL coating reduced the degradation rate of ZK60 Mg alloy and exhibited good biocompatibility. These results suggested that duplex MgF2/PCL coating on magnesium alloy might have great potential for orthopedic applications.

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Section: Resultsmentioning

confidence: 99%

Development and properties of duplex MgF2/PCL coatings on biodegradable magnesium alloy for biomedical applications

et al. 2018

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“…After 10 days of immersion in 3.5 wt % NaCl, their results showed that a composite coating containing a PCL layer had a high compressive strength. The PCL coating efficiently insulated the pores of under-layer coatings and kept corrosive media from entering the NiCoCrAlHfYSi/Al 2 O 3 -13%TiO 2 layer [50]. Their research also revealed that a PCL coating significantly improved the resistance to corrosion of the plasma coating on Mg alloy.…”

Section: Polycaprolactone (Pcl) Coated On Mg-based Alloymentioning

confidence: 98%

“…Electrochemical testing revealed that the bi-layered Al/PCL coating significantly improved the Mg-Ca-Bi alloy's corrosion resistance. In another study [50], their group used a combination of atmospheric plasma spraying (APS) and dip-coating methods to create a triplex (NiCoCrAlHfYSi/Al 2 O 3 -13%TiO 2 )/PCL composite coating on Mg-1.2Ca alloy. The plasma fabricated layers are usually 40-50 µm thick, while the top layer is 100-110 µm thick and made of hydrophobic PCL.…”

Section: Polycaprolactone (Pcl) Coated On Mg-based Alloymentioning

confidence: 99%

A Comprehensive Review on Surface Modifications of Biodegradable Magnesium-Based Implant Alloy: Polymer Coatings Opportunities and Challenges

et al. 2021

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The development of biodegradable implants is certainly intriguing, and magnesium and its alloys are considered significant among the various biodegradable materials. Nevertheless, the fast degradation, the generation of a significant amount of hydrogen gas, and the escalation in the pH value of the body solution are significant barriers to their use as an implant material. The appropriate approach is able to solve this issue, resulting in a decrease the rate of Mg degradation, which can be accomplished by alloying, surface adjustment, and mechanical treatment. Surface modification is a practical option because it not only improves corrosion resistance but also prepares a treated surface to improve bone regeneration and cell attachment. Metal coatings, ceramic coatings, and permanent polymers were shown to minimize degradation rates, but inflammation and foreign body responses were also suggested. In contrast to permanent materials, the bioabsorbable polymers normally show the desired biocompatibility. In order to improve the performance of drugs, they are generally encapsulated in biodegradable polymers. This study summarized the most recent advancements in manufacturing polymeric coatings on Mg alloys. The related corrosion resistance enhancement strategies and future potentials are discussed. Ultimately, the major challenges and difficulties are presented with aim of the development of polymer-coated Mg-based implant materials.

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Microstructure, In Vitro Corrosion Behavior and Cytotoxicity of Biodegradable Mg-Ca-Zn and Mg-Ca-Zn-Bi Alloys

Bakhsheshi-Rad

Hamzah

Tok

et al. 2017

J. of Materi Eng and Perform

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Preparation and Performance of Plasma/Polymer Composite Coatings on Magnesium Alloy

Cited by 13 publications

References 43 publications

Development and properties of duplex MgF2/PCL coatings on biodegradable magnesium alloy for biomedical applications

Development and properties of duplex MgF2/PCL coatings on biodegradable magnesium alloy for biomedical applications

A Comprehensive Review on Surface Modifications of Biodegradable Magnesium-Based Implant Alloy: Polymer Coatings Opportunities and Challenges

Microstructure, In Vitro Corrosion Behavior and Cytotoxicity of Biodegradable Mg-Ca-Zn and Mg-Ca-Zn-Bi Alloys

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