Corrosion mechanism and model of pulsed DC microarc oxidation treated AZ31 alloy in simulated body fluid

Gu, Yanhong; Chen, Cheng-fu; Bandopadhyay, Sukumar; Ning, Chengyun; Zhang, Yongjun; Guo, Yuanjun

doi:10.1016/j.apsusc.2012.03.016

Cited by 132 publications

(37 citation statements)

References 34 publications

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“…MAO is a novel and unique surface treatment technique based on anodic oxidation, by introducing the work zone into the high voltage discharge zone, in situ grown ceramic coating is directly formed on the surface of magnesium-based materials in a suitable electrolyte [6,7]. Some researchers have proven that the MAO coating can improve corrosion resistance of Mg and its alloys substrate in the SBF [7][8][9][10][11]. However, it is undeniable that the MAO coating still have some defects, such as micro-pores, micro-cracks, lack of biological activity, etc.…”

Section: Introductionmentioning

confidence: 99%

The n-MAO/EPD bio-ceramic composite coating fabricated on ZK60 magnesium alloy using combined micro-arc oxidation with electrophoretic deposition

Xiong

Lü

Wang

et al. 2014

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

The n-MAO/EPD bio-ceramic composite coating fabricated on ZK60 magnesium alloy using combined micro-arc oxidation with electrophoretic deposition

Xiong

Lü

Wang

et al. 2014

Applied Surface Science

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“…Besides, the corrosion rate of the electrodeposition coating was the fastest and even more than that of the Mg-Sr alloy. Generally, the corrosion resistance of a coating is governed by its original morphology/structure and thickness [39], the chemical stability of the main components in SBF [39,40]. From the surface and cross-sectional morphologies of these three coatings (Fig.…”

Section: Discussionmentioning

confidence: 99%

Comparison study of different coatings on degradation performance and cell response of Mg-Sr alloy

Shangguan

Sun

Wan

et al. 2016

Materials Science and Engineering: C

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“…The mass loss of the coatings tended to linearly increase at the early immersion stage (approximately 3 d), but subsequently slowed down. It is well known that there is a loose and porous layer on the surface of coatings [29]. The corrosion medium can easily permeate into the loose superficial layer and spread out, resulting in severe corrosion.…”

Section: Characterization Of the Coatingsmentioning

confidence: 99%

“…Micro-arc oxidation (MAO), also known as plasma electrolytic oxidation or anodic spark deposition, is a novel, promising surface treatment, which has been developed and applied to magnesium and its alloys [27][28][29][30][31]. This technique has become one of the most prospective surface treatments due to the good adhesion and corrosion resistance of ceramic coatings.…”

Section: Introductionmentioning

confidence: 99%

Bio-Corrosion Behavior of Ceramic Coatings Containing Hydroxyapatite on Mg-Zn-Ca Magnesium Alloy

Ding

Wang

et al. 2018

Applied Sciences

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Ceramic coatings containing hydroxyapatite (HA) were fabricated on a biodegradable Mg 66 Zn 29 Ca 5 magnesium alloy through micro-arc oxidation by adding HA particles into the electrolytes. The phase composition and surface morphology of the coatings were characterized by X-ray diffraction and scanning electron microscopy analyses, respectively. Electrochemical experiments and immersion tests were performed in Hank's solution at 37 • C to measure the corrosion resistance of the coatings. Blood compatibility was evaluated by in vitro blood platelet adhesion tests and static water contact angle measurement. The results show that the typical ceramic coatings with a porous structure were prepared on the magnesium alloy surface with the main phases of MgO and MgSiO 3 and a small amount of Mg 3 (PO 4 ) 2 and HA. The optimal surface morphology appeared at HA concentration of 0.4 g/L. The electrochemical experiments and immersion tests reveal a significant improvement in the corrosion resistance of the ceramic coatings containing HA compared with the coatings without HA or bare Mg 66 Zn 29 Ca 5 magnesium alloy. The static water contact angle of the HA-containing ceramic coatings is 18.7 • , which is lower than that of the coatings without HA (40.1 • ). The in vitro blood platelet adhesion tests indicate that the HA-containing ceramic coatings possess improved blood compatibility compared with the coatings without HA. Utilizing HA-containing ceramic coatings may be an effective way to improve the surface biocompatibility and corrosion resistance of magnesium alloys.

show abstract

Corrosion mechanism and model of pulsed DC microarc oxidation treated AZ31 alloy in simulated body fluid

Cited by 132 publications

References 34 publications

The n-MAO/EPD bio-ceramic composite coating fabricated on ZK60 magnesium alloy using combined micro-arc oxidation with electrophoretic deposition

The n-MAO/EPD bio-ceramic composite coating fabricated on ZK60 magnesium alloy using combined micro-arc oxidation with electrophoretic deposition

Comparison study of different coatings on degradation performance and cell response of Mg-Sr alloy

Bio-Corrosion Behavior of Ceramic Coatings Containing Hydroxyapatite on Mg-Zn-Ca Magnesium Alloy

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