Effect of friction stirred Al-Fe-Si particles in 6061 aluminum alloy on structure and corrosion performance of MAO coating

Chen, Ming-an; Ou, Yan-chun; Fu, You-hong; Li, Zai-hua; Li, Junming; Liu, Shengdan

doi:10.1016/j.surfcoat.2016.07.003

Cited by 28 publications

(19 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure 3, the number of small white particles identified by EDS is Fe-rich particles. is is consistent with the finding of Chen [25]. In addition, no crack exists in Figure 3, which indicates that the MAO coating is very adhesive to 5083 aluminum alloy substrate [33].…”

Section: Surface Characterization Of the Two Different Coatingssupporting

confidence: 91%

“…is is the characteristic of MAO coatings obtained by microsparks on the sample surface of alloys [25,32]. Still some of the pores in the MAO are blocked.…”

Section: Surface Characterization Of the Two Different Coatingsmentioning

confidence: 98%

“…Wang et al [24] investigated a ceramic coating deposited on Al matrix composite by MAO and found that surface hardness wear resistance of the composite can be significantly improved. Chen et al [25] investigated the corrosion performance of MAO coatings on different regions of the friction stirred 6061 aluminum alloy plate and found that the corrosion protection performance of the MAO coating can be improved by inducing the coarse and congregated Al-Fe-Si particles into fine and disperse distributed particles. Krishtal [26] found that the substantial improvement in corrosion resistance of the friction stir welds of 7075 aluminum alloy can be achieved by MAO treatment.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Corrosion Behaviors of Microarc Oxidation Coating and Anodic Oxidation on 5083 Aluminum Alloy

Sun

Liang-cai

Wang

et al. 2020

Journal of Chemistry

View full text Add to dashboard Cite

The microarc oxidation (MAO) coating and anodic oxidation coating were prepared on 5083 aluminum alloy. The surface morphology, elemental composition, and electrochemical behavior of the two coatings were analyzed. The results proved that the corrosion resistance of the MAO coating is superior than that of the anodic oxidation coating. The protective ability of the coating deteriorated gradually with the increase in immersion time. The corrosion process is controlled by ion diffusion throughout the coatings.

show abstract

Section: Surface Characterization Of the Two Different Coatingssupporting

confidence: 91%

“…is is the characteristic of MAO coatings obtained by microsparks on the sample surface of alloys [25,32]. Still some of the pores in the MAO are blocked.…”

Section: Surface Characterization Of the Two Different Coatingsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion Behaviors of Microarc Oxidation Coating and Anodic Oxidation on 5083 Aluminum Alloy

Sun

Liang-cai

Wang

et al. 2020

Journal of Chemistry

View full text Add to dashboard Cite

show abstract

“…Aluminum alloy (AA) is attractive for applications in marine engineering (Shen et al , 2020; Xie et al , 2016; Lin et al , 2016; Chen et al , 2016) due to the high specific strength. Unfortunately, many AAs are susceptible to chloride ion attack, largely limiting their marine applications (Tseng et al , 2012; Sekularac and Milosev, 2018).…”

Section: Introductionmentioning

confidence: 99%

Analysis on corrosion of aluminum-based micro-arc oxidation coating

Yao

Feng

et al. 2021

ACMM

View full text Add to dashboard Cite

Purpose Aluminum alloy is susceptible to chloride ion attack in sea water, resulting in pitting damage and hence serious security risks for the related applications. To improve the corrosion resistance of Al alloy, micro-arc oxidation (MAO) technology has been developed to produce a protective dense oxide layer on top of Al alloy. However, the mechanism of MAO-induced corrosion resistance is still not fully understood, particularly on local corrosion issue. This paper aims to focus on comprehensively studying the corrosion-resistance mechanism by a series of technologies. Design/methodology/approach The corrosion behavior of samples was studied by open circuit potential (OCP), potentiodynamic polarization (PDP), electrode impedance spectroscopy (EIS) and localized electrode impedance spectroscopy (LEIS) tests in NaCl solution. Findings The MAO-coated Al alloy shows a more positive corrosion potential and a higher corrosion current density compared to the untreated counterpart, indicating a significantly enhanced corrosion-resistance. The study of surface morphology and structure also suggest significantly enhanced corrosion-resistance due to the MAO treatment. Originality/value Based on the results, a new corrosion model was proposed to describe the influence of MAO treatment on the corrosion process and corrosion mechanism of Al alloy, providing insights on the design of the corrosion-resistance coating for metallic alloys in marine applications.

show abstract

“…However, under corrosive conditions such as in humid, acidic and alkaline environments, aluminum alloys are prone to corrosion. To protect or mitigate corrosion processes, protective coatings are typically applied to metal surfaces (Ref [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of Bis-Silane-Modified Epoxy Coatings on an Al-Zn-Mg-Cu Alloy

Zeng

Liu

Bai

et al. 2020

J. of Materi Eng and Perform

View full text Add to dashboard Cite

A bis-silane prepolymer-modified epoxy coating was applied to an Al-Zn-Mg-Cu alloy to improve corrosion protection. The bis-silane prepolymer was synthesized from tetraethoxysilane and c-glycidoxypropyl trimethoxysilane. To study the mechanism of protection failure by the silane-epoxy hybrid coating and to determine an appropriate coating for protection, various coatings with different silane prepolymer contents were developed. The corrosion behavior of the coatings was studied by electrochemical impedance spectroscopy in a 3.5 wt.% NaCl solution. In comparison with silane monomer-modified epoxy coatings, the bissilane-modified epoxy coating had lower coating capacitance (C c), higher charge transfer resistance (R dl) and lower double-layer capacitance (C dl) during long immersion times, indicating a higher resistance to water permeation and stronger protection against substrate corrosion. The lowest C c and C dl values were obtained by mixing epoxy and the bis-silane prepolymer at a ratio of 1:1.

show abstract

Effect of friction stirred Al-Fe-Si particles in 6061 aluminum alloy on structure and corrosion performance of MAO coating

Cited by 28 publications

References 29 publications

Corrosion Behaviors of Microarc Oxidation Coating and Anodic Oxidation on 5083 Aluminum Alloy

Corrosion Behaviors of Microarc Oxidation Coating and Anodic Oxidation on 5083 Aluminum Alloy

Analysis on corrosion of aluminum-based micro-arc oxidation coating

Corrosion Resistance of Bis-Silane-Modified Epoxy Coatings on an Al-Zn-Mg-Cu Alloy

Contact Info

Product

Resources

About