Recent progress on coatings of biomedical magnesium alloy

Tong, Peiduo; Sheng, Yulong; Hou, Ruiqing; Iqbal, Mujahid; Chen, Lan; Li, Jingan

doi:10.1016/j.smaim.2021.12.007

Cited by 95 publications

(46 citation statements)

References 98 publications

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“…The Mg(OH) 2 peak number of the SiO 2 /MAO coating was the lowest, indicating that the nano-SiO 2 improved the corrosion resistance of the MAO coating. The main reaction equations for the coating in the corrosive solution are as follows [ 24 , 25 ]: Mg − 2e − = Mg 2+ 2H 2 O + 2e − = H 2 + 2OH − 2Mg 2+ + 2OH − 2e − = 2MgO + H 2 MgO = Mg 2+ + O 2− Mg 2+ + 2OH − = Mg(OH) 2 …”

Section: Resultsmentioning

confidence: 99%

Local Electrochemical Corrosion Properties of a Nano-SiO2/MAO Composite Coating on an AM60B-Mg Alloy

Yang

Taguchi

et al. 2022

Materials

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In order to improve the corrosion resistance of the automotive AM60B-Mg alloy, a nano-SiO2/MAO composite coating was prepared on the surface of the alloy. The electrochemical properties were studied in an 80 °C corrosion environment using potentiodynamic polarization tests. Local Electrochemical Impedance Spectroscopy (LEIS) was used to study the corrosion mechanisms of coating defect zone. The microstructure and phase of the samples were observed by confocal laser microscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD). Macroscopic electrochemical test results showed that the impedance of the nano-SiO2/MAO coating was much higher than that of the MAO coating, by about 433 times. Local electrochemical test results showed that the minimum impedance of the nano-SiO2/MAO coating was 1–2 orders of magnitude higher than the maximum impedance of the MAO coating. The defective SiO2/MAO coating still had high corrosion resistance compared to the defective MAO coating. A physical model of local corrosion mechanisms was proposed.

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Section: Resultsmentioning

confidence: 99%

Local Electrochemical Corrosion Properties of a Nano-SiO2/MAO Composite Coating on an AM60B-Mg Alloy

Yang

Taguchi

et al. 2022

Materials

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“…The surface scratches on implants seem unavoidable during surgery, and the partial damages provide pathways for the intake of the aggressive solution and lead to severe local corrosion and even premature coating failures [ 374 ]. Upon damage, self-healing coatings can repair defects by eliciting automatic repair mechanisms and restoring coating functions.…”

Section: Coatings and Their Current Statusmentioning

confidence: 99%

Progress in bioactive surface coatings on biodegradable Mg alloys: A critical review towards clinical translation

Singh

Batra

Kumar

et al. 2023

Bioactive Materials

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“…[ 4 ] It is a major challenge to create a safe blood‐contacting surface balancing cytocompatibility and antithrombogenic effects. [ 2,5–10 ] In addition, the bacterial infection of cardiovascular devices such as catheters and artificial blood vessels must be avoided, as it may also cause implant failures, while being life‐threatening in extreme cases. [ 11 ]…”

Section: Introductionmentioning

confidence: 99%

“…[4] It is a major challenge to create a safe bloodcontacting surface balancing cytocompatibility and antithrombogenic effects. [2,[5][6][7][8][9][10] In addition, the bacterial infection of cardiovascular devices such as catheters and artificial blood vessels must be avoided, as it may also cause implant failures, while being life-threatening in extreme cases. [11] Shellac (also known as lac) is a natural resin that can potentially be used as a bioactive material to modify the surfaces of blood-contacting devices.…”

mentioning

confidence: 99%

Shellac: A Bioactive Coating for Surface Engineering of Cardiovascular Devices

Yang

Yong

Yue

et al. 2022

Adv Materials Inter

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materials due to the surface-induced clotting and thrombus formation that can cause device failure. [1,2] The proliferation of smooth muscle cells (SMCs) on the surfaces of foreign materials may lead to restenosis upon implantation of cardiovascular devices such as stents. [3] The intimal hyperplasia and thrombosis are the main reasons that lead to low retrievable rate of inferior vena cava filters (IVCs). [4] It is a major challenge to create a safe bloodcontacting surface balancing cytocompatibility and antithrombogenic effects. [2,[5][6][7][8][9][10] In addition, the bacterial infection of cardiovascular devices such as catheters and artificial blood vessels must be avoided, as it may also cause implant failures, while being life-threatening in extreme cases. [11] Shellac (also known as lac) is a natural resin that can potentially be used as a bioactive material to modify the surfaces of blood-contacting devices. Shellac is secreted by shellac insects that parasitize on branches of certain legumes by sucking the sap. [12] It is composed of polyester and single ester with polyhydroxypolybasic acids such as aleuritic acid, jalaric acid, and laccijalaric acid with the chemical structure depicted in Figure 1a. [13] The hydrophobic (aleuritic acid) and hydrophilic (cyclic terpene acid) components of shellac are linked with each other through ester bonds, providing it with an amphiphilic nature. [13] Shellac

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Recent progress on coatings of biomedical magnesium alloy

Cited by 95 publications

References 98 publications

Local Electrochemical Corrosion Properties of a Nano-SiO2/MAO Composite Coating on an AM60B-Mg Alloy

Local Electrochemical Corrosion Properties of a Nano-SiO2/MAO Composite Coating on an AM60B-Mg Alloy

Progress in bioactive surface coatings on biodegradable Mg alloys: A critical review towards clinical translation

Shellac: A Bioactive Coating for Surface Engineering of Cardiovascular Devices

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