Effect of alloy cations on corrosion resistance of LDH/MAO coating on magnesium alloy

Chen, Junfeng; Lin, Wenxin; Liang, Shiyan; Zou, Linchi; Wang, Chen; Wang, Binshu; Yan, Mufu; Cui, Xiping

doi:10.1016/j.apsusc.2018.08.242

Cited by 107 publications

(22 citation statements)

References 27 publications

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“… 4 , 5 Since the electroless Ni–P coating on the magnesium alloy substrate is a cathodic coating, the caustic ions in the solution can easily reach the substrate through these pores, triggering galvanic corrosion between the Ni–P coating and the substrate, resulting in an evident decrease in corrosion protection. 6 Hence, a single electroless Ni–P coating is inappropriate for a general industrial use directly.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Corrosion Resistance of a Superhydrophobic Ni–P/Ni₃(NO₃)₂(OH)₄ Multilayer Protective Coating on Magnesium Alloy

Yuan

Yuan³

et al. 2020

ACS Omega

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A superhydrophobic multilayer coating with excellent corrosion resistance has been fabricated on an AZ61 magnesium alloy through electroless plating and hydrothermal treatment. The surface morphologies, chemical characteristics, wettabilities, and corrosion resistance of the multilayer coating were characterized and discussed. The results show that the electroless Ni–P coating on the magnesium alloy exhibits a nodular structure with micropores and lower corrosion resistance. However, a dense Ni 3 (NO 3 ) 2 (OH) 4 layer, a porous Ni 3 (NO 3 ) 2 (OH) 4 nanostructure layer, and a stearic absorbing layer are grown on the surface of the Ni–P coating with superhydrophobic characters and higher corrosion resistance after hydrothermal treatment. Furthermore, the water contact angle and corrosion resistance of the multilayer coating showed a trend of first increasing and then decreasing as the hydrothermal reaction time increases. The optimum hydrothermal reaction time is 15 h, and the multilayer coating prepared under this condition has the highest corrosion resistance and the highest contact angle. In addition, the protection mechanism of the multilayer coating is discussed, and the formation of the dense Ni 3 (NO 3 ) 2 (OH) 4 layer and the stearic absorbing layer effectively improved the corrosion resistance of the multilayer coating.

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Section: Introductionmentioning

confidence: 99%

Fabrication and Corrosion Resistance of a Superhydrophobic Ni–P/Ni₃(NO₃)₂(OH)₄ Multilayer Protective Coating on Magnesium Alloy

Yuan

Yuan³

et al. 2020

ACS Omega

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“…Figure b,c shows Bode plots of all samples, and the impedance modulus | Z | is also used to characterize the corrosion resistance of the material. It is well‐known that the larger the | Z | value, the better the corrosion resistance …”

Section: Resultsmentioning

confidence: 99%

Corrosion behavior of GO‐reinforced TC4 nanocomposites manufactured by selective laser melting

Liu

et al. 2019

Materials & Corrosion

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To improve the corrosion resistance of Ti–6Al–4V (TC4) matrix, the influence on the corrosion behavior, microhardness, and microstructure of graphene oxide (GO)‐reinforced TC4 nanocomposites manufactured by selective laser melting was systematically investigated in this study. Microhardness tester, profilometer, X‐ray diffractometer, scanning electron microscopy, and electrochemical workstation were used to characterize the association between microhardness, pore microstructures, hard phases, and corrosion resistance of GO/TC4 nanocomposites. It can be observed that the incorporation of GO promotes the in situ formation of hard phases, such as TiC, TiO2, Al2O3, and so forth, and it also changes the microstructure of the matrix as well as increases its porosity. Nevertheless, GO/TC4 nanocomposites perform the best corrosion resistance when the mixing content of GO is 0.5 wt%, and its microhardness is greatly improved with the addition of GO. All experimental results suggest the efficacy of added GO.

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“…The elevated temperatures associated with the formation of PEO–LDH composite coatings would lead to a mismatch between the dissolution of PEO layers and the growth of Mg–Al LDH film [ 84 , 85 , 86 , 87 , 88 , 89 ]. This deficiency would restrict the large improvement in the protective properties of these materials.…”

Section: Corrosion Performance Of Ldh/anodic Film Compositesmentioning

confidence: 99%

“…First, if the dissolution rate of the PEO coating is greater than the growth rate of the LDH film, the protective properties of the composite coating may be limited. For instance, Chen et al [ 84 ] used a hydrothermal treatment method in a 0.1 M Al(NO 3 ) 3 and 0.6 M NH 4 NO 3 solution at 368 K with a pH of 7 for 1 h to prepare Mg–AL LDH on the PEO coating of AZ31 Mg alloy. The results revealed that a low pH value resulted in cracking in the PEO coating.…”

Section: Corrosion Performance Of Ldh/anodic Film Compositesmentioning

confidence: 99%

A Review on LDH-Smart Functionalization of Anodic Films of Mg Alloys

Kaseem

Ramachandraiah

Hossain³

et al. 2021

Nanomaterials

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This review presents an overview of the recent developments in the synthesis of layered double hydroxide (LDH) on the anodized films of Mg alloys prepared by either conventional anodizing or plasma electrolytic oxidation (PEO) and the applications of the formed composite ceramics as smart chloride traps in corrosive environments. In this work, the main fabrication approaches including co-precipitation, in situ hydrothermal, and an anion exchange reaction are outlined. The unique structure of LDH nanocontainers enables them to intercalate several corrosion inhibitors and release them when required under the action of corrosion-relevant triggers. The influences of different variables, such as type of cations, the concentration of salts, pH, and temperature, immersion time during the formation of LDH/anodic film composites, on the electrochemical response are also highlighted. The correlation between the dissolution rate of PEO coating and the growth rate of the LDH film was discussed. The challenges and future development strategies of LDH/anodic films are also highlighted in terms of industrial applications of these materials.

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Effect of alloy cations on corrosion resistance of LDH/MAO coating on magnesium alloy

Cited by 107 publications

References 27 publications

Fabrication and Corrosion Resistance of a Superhydrophobic Ni–P/Ni₃(NO₃)₂(OH)₄ Multilayer Protective Coating on Magnesium Alloy

Fabrication and Corrosion Resistance of a Superhydrophobic Ni–P/Ni₃(NO₃)₂(OH)₄ Multilayer Protective Coating on Magnesium Alloy

Corrosion behavior of GO‐reinforced TC4 nanocomposites manufactured by selective laser melting

A Review on LDH-Smart Functionalization of Anodic Films of Mg Alloys

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Effect of alloy cations on corrosion resistance of LDH/MAO coating on magnesium alloy

Cited by 107 publications

References 27 publications

Fabrication and Corrosion Resistance of a Superhydrophobic Ni–P/Ni3(NO3)2(OH)4 Multilayer Protective Coating on Magnesium Alloy

Fabrication and Corrosion Resistance of a Superhydrophobic Ni–P/Ni3(NO3)2(OH)4 Multilayer Protective Coating on Magnesium Alloy

Corrosion behavior of GO‐reinforced TC4 nanocomposites manufactured by selective laser melting

A Review on LDH-Smart Functionalization of Anodic Films of Mg Alloys

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Product

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Fabrication and Corrosion Resistance of a Superhydrophobic Ni–P/Ni₃(NO₃)₂(OH)₄ Multilayer Protective Coating on Magnesium Alloy

Fabrication and Corrosion Resistance of a Superhydrophobic Ni–P/Ni₃(NO₃)₂(OH)₄ Multilayer Protective Coating on Magnesium Alloy