Corrosion and wear resistance of micro-arc oxidation coating on glass microsphere reinforced Mg alloy composite

Liu, Lin; Yu, Sirong; Zhu, Guang; Li, Quan; Liu, Enyang; Xiong, Wei; Wang, Bingying; Yang, Xiaofeng

doi:10.1007/s10853-021-06252-y

Cited by 18 publications

(4 citation statements)

References 41 publications

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“…According to the oxidation law, the growth process of MAO coating on Zn-Mn-Mg alloys can be classified into different periods. First, a thin oxide coating (barrier layer) is formed on the outside at a low anode voltage without sparking at this stage [44,45]. When the voltage increases and crosses the breakdown voltage threshold, the loss of dielectric stability leads to the formation of discharge passages in the low dielectric region [46].…”

Section: Discussionmentioning

confidence: 99%

Surface Treatment of Zn-Mn-Mg Alloys by Micro-Arc Oxidation in Silicate-Based Solutions with Different NaF Concentrations

Sun

et al. 2021

Materials

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Newly developed Zn-Mn-Mg alloys can be invoked as biomedical materials because of their excellent mechanical properties. However, the corrosion behavior of Zn-Mn-Mg alloys was still lacking in research. It had grown to be a hot research topic to improve the corrosion behavior of Zn alloys by surface treatment to meet the application of degradable Zn alloys in biomedical applications. Micro arc oxidation (MAO) is a simple and effective method to improve the corrosion behavior of the alloy. MAO coatings were successfully prepared on the surface of Zn-Mn-Mg alloys by MAO in silicate-based solutions with different NaF concentrations. The microstructure and phase composition of MAO coatings prepared on Zn-Mn-Mg alloys with different NaF concentrations in the electrolyte was examined by a scanning electron microscope and X-ray diffraction. The results showed that the MAO coatings are porous and mainly composed of ZnO. With the increasing NaF concentration in the electrolyte, the average thickness increases. The distribution of the micro/nanopores was uniform, and the pore size ranged from the submicron scale to several micrometers after MAO treatment in the electrolyte containing different concentrations of NaF. Potential dynamic polarization curves and electrochemical impedance spectroscopy were employed to assess the corrosion behavior of MAO coatings in Hank’s solution. The highest corrosion rate can be achieved after MAO treatment, with an electrolyte concentration of 1.5 g/L NaF in Hank’s solution. These results indicated that MAO coating can accelerate the corrosion resistance of a Zn-Mn-Mg alloy.

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Section: Discussionmentioning

confidence: 99%

Surface Treatment of Zn-Mn-Mg Alloys by Micro-Arc Oxidation in Silicate-Based Solutions with Different NaF Concentrations

Sun

et al. 2021

Materials

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“…The transit of the electron from the inhibitor to the metal facilitated by the presence of p electrons and non-bonding electrons (a single pair) in t inhibitor molecule [41]. Heteroatoms with lone electron pairs are necessary for efficie organic corrosion inhibitors, such as those found in nitrogen, oxygen, sulfur, and pho phorus, as well as moiety with electrons (aromatic rings and multiple bonds), which c interact with free orbital d metal and facilitate the adsorption process [42,43]. The annu corrosion rate employing an organic inhibitor is shown in Figure 4 as a function of tim Some inorganic inhibitors are only partially soluble in some conditions.…”

Section: Organic Corrosion Inhibitorsmentioning

confidence: 99%

Recent Trends and Progress in Corrosion Inhibitors and Electrochemical Evaluation

Bijapur,

Molahalli,

Shetty

et al. 2023

Applied Sciences

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Science and engineering research studies are currently concentrating on synthesizing, designing, producing, and consuming ecologically benign chemical species to replace harmful chemicals. This is due to the increasing demands of conservation knowledge and strict ecological regulations. Numerous environmentally friendly substitutes produced from natural resources, including biopolymers, plant extracts, chemical pharmaceuticals (drugs), and so on, are now frequently used as inhibitors to replace dangerous corrosion inhibitors. Many compounds have been extensively used. A range of methods, including physisorption, chemisorption, barrier protection, thin-film growth, and electrochemical procedures, will be used to provide corrosion resistance. The various kinds of corrosion inhibitors (CIs), the mechanisms underlying inhibition, and the evaluation procedures have all been covered in-depth. This review provides an overview of the relevant literature in which researchers and scientists used different types of CIs, the effect of CIs on metals, and information about designs and mechanisms used to minimize corrosion in a variety of equipment composed of alloys or metals, along with electrochemical evaluation studies. This review will provide scholars with fresh insights to advance the discipline.

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“…The normal techniques for fabricating the protective coatings on magnesium alloys include chemical conversion [ 9 , 10 ], micro-arc oxidation [ 11 , 12 ], anodizing [ 13 ], organic coating [ 14 , 15 ], electroless plating [ 16 ], electroplating [ 17 ], thermal spraying [ 18 ] and cold spraying [ 19 ]. Nevertheless, because of the lack of thickness, high porosity or low adhesion strength, the majority of them are unable to withstand corrosion under high temperature and high pressure.…”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature and Pressure on Corrosion Behavior of HVOF-Sprayed Fe-Based Amorphous Coating on the Mg-RE Alloy for Dissolvable Plugging Tools

Sun

Yang²,

Zhang

2023

Materials

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To retard the degradation of the magnesium alloys for dissolvable ball seats, Fe-based amorphous coatings were deposited on dissolvable Mg-RE alloy substrates using high velocity oxygen-fuel spraying technology. The results show that the Fe-based amorphous coatings possess low porosity (0.82%) and high amorphous contents (91.4%) and their corrosion resistance decreases with the increase of temperature or pressure. However, with the help of Fe-based amorphous coatings, the degradation time of dissolvable Mg-RE alloy has been significantly prolonged. In particular, the service life of coated Mg-RE alloy exceeds 360 h at temperatures below 50 °C and reaches 87 h at 120 °C and 80 atm. Under high temperature and high pressure, the compactness of passive films decreases and the chemical activities of ions and metal elements increase, leading to the degradation of corrosion resistance of Fe-based amorphous coatings. In long-term corrosion, the crystallized splats are prone to corrosion because of the multiphase structures. The corroded crystallized splats are connected to the inevitable pores by the corroded intersplat regions, resulting in the formation of corrosion channels and the corrosion failure of coatings. This study provides a useful guidance for the corrosion protection of dissolvable plugging tools made of magnesium alloys.

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Corrosion and wear resistance of micro-arc oxidation coating on glass microsphere reinforced Mg alloy composite

Cited by 18 publications

References 41 publications

Surface Treatment of Zn-Mn-Mg Alloys by Micro-Arc Oxidation in Silicate-Based Solutions with Different NaF Concentrations

Surface Treatment of Zn-Mn-Mg Alloys by Micro-Arc Oxidation in Silicate-Based Solutions with Different NaF Concentrations

Recent Trends and Progress in Corrosion Inhibitors and Electrochemical Evaluation

Effects of Temperature and Pressure on Corrosion Behavior of HVOF-Sprayed Fe-Based Amorphous Coating on the Mg-RE Alloy for Dissolvable Plugging Tools

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