A room temperature cured sol–gel anticorrosion pre-treatment for Al 2024-T3 alloys

Wang, Heming; Akid, Robert

doi:10.1016/j.corsci.2007.04.015

Cited by 163 publications

(85 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless the above said, we tried to compare the values of corrosion currents thus obtained with the values determined for systems involving the same aluminium alloy obtained by more traditional techniques as polarization techniques [13,26,27] and current converted weight loss [28] and the values are in close agreement, which validates the SVET results. Figure 11 SVET measurements allow also to analyse the level of localised attack of a certain sample, since it becomes very clear where the anodic currents come from, i.e., the surface areas which have been attacked and the intensity of this local attack.…”

Section: Assessment Of the Degree Of Localised Corrosion From Svet Datasupporting

confidence: 58%

Corrosion protection of AA2024-T3 by LDH conversion films. Analysis of SVET results

Tedim

Bastos

Kallip

et al. 2016

Electrochimica Acta

100

View full text Add to dashboard Cite

In this work the protective effect of layered double hydroxide (LDH) films directly grown on the surface of 2024-T3 aluminium alloy is investigated using electrochemical impedance spectroscopy (EIS) and the scanning vibrating electrode technique (SVET).The SVET results focused on the localised nature of the corrosion process and are in agreement with the global response measured by EIS. Furthermore, the evolution of active corrosion protection rendered by LDH films is surveyed at microscale for the first time for long immersion periods in NaCl solution and in the presence of induced defects. The quantitative information provided by SVET is discussed and a parameter to describe the degree of corrosion localisation is introduced based on LDH systems.

show abstract

Section: Assessment Of the Degree Of Localised Corrosion From Svet Datasupporting

confidence: 58%

Corrosion protection of AA2024-T3 by LDH conversion films. Analysis of SVET results

Tedim

Bastos

Kallip

et al. 2016

Electrochimica Acta

100

View full text Add to dashboard Cite

show abstract

“…The factor n, defined as CPE power, is an adjustable parameter that lies between 0.5 and 1 and is defined as the roughness factor in Eq. 2 [28][29][30][31]:…”

Section: Electrochemical Impedance Spectroscopy Studiesmentioning

confidence: 99%

Corrosion performance of the electroless Ni–P coatings prepared in different conditions and optimized by the Taguchi method

Farzaneh

Ehteshamzadeh

Mohammadi³

2010

J Appl Electrochem

View full text Add to dashboard Cite

This paper presents an experimental study on the influence of anionic surfactant sodium dodecyl sulfate (SDS), pH, substrate finishing and annealing temperature on the corrosion resistance of electroless nickel phosphorus (Ni-P) coatings using electrochemical techniques and optimization of process parameters based on the Taguchi method. Parameters were selected in three levels and L9 from orthogonal robust array design was used. Corrosion performance of the electroless Ni-P coatings was evaluated by polarization and electrochemical impedance spectroscopy (EIS). Scanning electron microscope (SEM), Energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) analysis were used for studying surface morphology and chemical composition of the electroless Ni-P coatings. The results showed that SDS surfactant causes increasing of corrosion resistance and improves surface morphology. Finally, optimum conditions were achieved as, surfactant concentration: 1.5 g L -1 , pH: 5.5, substrate finishing provided with emery paper no, 2000, and annealing temperature of 200°C.

show abstract

“…For S_WZ21 and BNS_WZ21, two distinct time constants can be observed in Figure 4b. The high-frequency regime time constant is generally attributed to the electrochemical response at the coatings/electrolyte interface [19,20,[43][44][45][46][47][48][49], whereas the time constant in the low-frequency regime is commonly attributed to the electrochemical response at the metal/electrolyte interface [19,20,[45][46][47][48][49][50][51]. The high-frequency regime time constant is much prominent in the case of BNS_WZ21.…”

Section: Chemical and Morphological Characterisationmentioning

confidence: 99%

Hexagonal Boron Nitride Impregnated Silane Composite Coating for Corrosion Resistance of Magnesium Alloys for Temporary Bioimplant Applications

Al-Saadi

Banerjee

Anisur

et al. 2017

Metals

View full text Add to dashboard Cite

Magnesium and its alloys are attractive potential materials for construction of biodegradable temporary implant devices. However, their rapid degradation in human body fluid before the desired service life is reached necessitate the application of suitable coatings. To this end, WZ21 magnesium alloy surface was modified by hexagonal boron nitride (hBN)-impregnated silane coating. The coating was chemically characterised by Raman spectroscopy. Potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) of the coated alloy in Hanks' solution showed a five-fold improvement in the corrosion resistance of the alloy due to the composite coating. Post-corrosion analyses corroborated the electrochemical data and provided a mechanistic insight of the improvement provided by the composite coating.

show abstract

A room temperature cured sol–gel anticorrosion pre-treatment for Al 2024-T3 alloys

Cited by 163 publications

References 23 publications

Corrosion protection of AA2024-T3 by LDH conversion films. Analysis of SVET results

Corrosion protection of AA2024-T3 by LDH conversion films. Analysis of SVET results

Corrosion performance of the electroless Ni–P coatings prepared in different conditions and optimized by the Taguchi method

Hexagonal Boron Nitride Impregnated Silane Composite Coating for Corrosion Resistance of Magnesium Alloys for Temporary Bioimplant Applications

Contact Info

Product

Resources

About