The effects of severe plastic deformation on the mechanical and corrosion characteristics of a bioresorbable Mg-ZKQX6000 alloy

Vaughan, M.W.; Karayan, Ahmad Ivan; Srivastava, Abhinav; Mansoor, Bilal; Seitz, Jan‐Marten; Eifler, Rainer; Караман, И.; Castaneda, Homero; Maier, Hans Jürgen

doi:10.1016/j.msec.2020.111130

Cited by 30 publications

(15 citation statements)

References 52 publications

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“…Anodic partial reactions, with a slight decrease in pH [ 47 ], typically occur in the corrosive Mg matrix adjacent to cathodic zones (e.g., impurity particles, noble elements enriched regions, second phases) [ 48 , 49 , 50 , 51 ]. This Mg matrix is prone to be internal galvanic attacked due to a very negative electrode potential [ 52 , 53 , 54 ].…”

Section: Corrosion Behaviormentioning

confidence: 99%

“…Due to the relatively low solubility of elements in Mg, second phase particles can develop when the alloy is in excess of the solubility limit [ 87 ]. Subsequent inter-galvanic effects can strongly influence the initial stages of corrosion in Mg alloys [ 48 , 49 ] ( Table 1 ).…”

Section: Corrosion Behaviormentioning

confidence: 99%

“…Localized corrosion occurs preferentially in adjacent Mg matrix [ 50 ] since noble secondary phases often act as cathodic regions. This leads to trenching and pitting effects where particles fall out of the substrate, accelerating the rate of corrosion [ 49 , 99 ]. Pitting corrosion is typically aggravated in chloride solutions and exhibits a positive correlation with increasing duration and chloride content [ 100 ].…”

Section: Corrosion Behaviormentioning

confidence: 99%

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Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Liu

Sun

et al. 2022

Materials

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Magnesium alloys exhibit superior biocompatibility and biodegradability, which makes them an excellent candidate for artificial implants. However, these materials also suffer from lower corrosion resistance, which limits their clinical applicability. The corrosion mechanism of Mg alloys is complicated since the spontaneous occurrence is determined by means of loss of aspects, e.g., the basic feature of materials and various corrosive environments. As such, this study provides a review of the general degradation/precipitation process multifactorial corrosion behavior and proposes a reasonable method for modeling and preventing corrosion in metals. In addition, the composition design, the structural treatment, and the surface processing technique are involved as potential methods to control the degradation rate and improve the biological properties of Mg alloys. This systematic representation of corrosive mechanisms and the comprehensive discussion of various technologies for applications could lead to improved designs for Mg-based biomedical devices in the future.

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Section: Corrosion Behaviormentioning

confidence: 99%

Section: Corrosion Behaviormentioning

confidence: 99%

Section: Corrosion Behaviormentioning

confidence: 99%

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Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Liu

Sun

et al. 2022

Materials

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“…However, the poor wear resistance of Mg alloys severely limits their applications and causes huge economic losses. In order to enhance the wear resistance of Mg alloys, some effective technologies have been proposed, such as surface coating technology [ 3 ], laser cladding [ 4 ], ion implantation [ 5 ], physical vapor deposition (PVD) [ 6 ] and surface nanocrystallization (SNC) [ 7 , 8 ]. Among the above processing methods, SNC is a simple, economical and effective method to improve the wear resistance of the material surface.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ultrasonic Surface Rolling Processing and Subsequent Recovery Treatment on the Wear Resistance of AZ91D Mg Alloy

et al. 2020

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AZ91D Mg alloy was treated by ultrasonic surface rolling processing (USRP) and subsequent recovery treatment at different temperatures. The dry sliding friction test was performed to investigate the effects of USRP and subsequent recovery treatment on the wear resistance of AZ91D Mg alloy by a ball-on-plate tribometer. The microstructure, properties of plastic deformation layer and worn morphology were observed by optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD) analysis and microhardness tester. Results illustrate that the grains of AZ91D Mg alloy surface layer are refined to nanocrystallines. The maximum microhardness of the top surface of the USRP sample reaches 102.3 HV. When USRP samples are treated by recovery treatment at 150 °C, 200 °C and 250 °C, the microhardness of the top surface decreases to 90.68 HV, 79.29 HV and 75.06 HV, respectively. The friction coefficient (FC) and wear volume loss of the USRP-R-150 sample are the lowest among all the samples. The worn surface morphology of the USRP-R-150 sample is smoother than that of other samples, indicating that the wear resistance of AZ91D Mg alloy treated by USRP and recovery treatment at 150 °C is improved significantly.

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“…Mg alloy is extremely sensitive to galvanic corrosion, leading to a rapid corrosion [3][4][5]. In addition, Mg alloy also has a tendency of localized corrosion, leading to a quick failure of mechanical properties [6,7]. To protect Mg alloy against corrosion and to maintain their mechanical integrity, various kinds of anti-corrosion techniques have been developed, such as phosphating treatment, microarc oxidation and polymer coating [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Treatment Induced Fluoride Conversion Coating without Pores for High Corrosion Resistance of Mg Alloy

Sheng¹,

Yi²,

Zhu³

et al. 2020

Coatings

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Fluoride conversion (MgF2) coating with facile preparation and good adhesion is promising to protect Mg alloy, but defects of pores in the coating lead to limited corrosion resistance. In this study, a compact and dense MgF2 coating was prepared by the combination of fluoride treatment and ultrasonic treatment. The ultrasonically treated MgF2 coating showed a compact and dense structure without pores at the frequency of 28 kHz. The chemical compositions of the coating were mainly composed of F and Mg elements. The corrosion potential of the ultrasonically treated Mg alloy shifted towards the noble direction in the electrochemical tests. The corrosion current density decreased due to the protectiveness of MgF2 coating without defects of pores or cracks. During immersion tests for 24 h, the ultrasonically treated Mg alloy exhibited the lowest H2 evolution (0.32 mL/cm2) and pH value (7.3), which confirmed the enhanced anti-corrosion ability of MgF2 coating. Hence, the ultrasonically treated fluoride coating had great potentials for their use in anti-corrosion applications of Mg alloy.

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The effects of severe plastic deformation on the mechanical and corrosion characteristics of a bioresorbable Mg-ZKQX6000 alloy

Cited by 30 publications

References 52 publications

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Effects of Ultrasonic Surface Rolling Processing and Subsequent Recovery Treatment on the Wear Resistance of AZ91D Mg Alloy

Ultrasonic Treatment Induced Fluoride Conversion Coating without Pores for High Corrosion Resistance of Mg Alloy

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