Using EIS to evaluate anti-corrosion properties of the SiCp/5A06 aluminium MMC treated by cerium conversion coatings

Aziz, Irfan; Zhang, Qi; Xiang, Min

doi:10.1016/s1002-0721(09)60062-4

Cited by 22 publications

(17 citation statements)

References 20 publications

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“…Aziz et al 79 evaluated the corrosion protection provided by cerium conversion coatings on a SiC-5A06 Al composite and an Al 5A06 alloy. EIS was employed to examine the changes of the electrochemical properties of treated samples that were immersed in 3.5% NaCl at 35 °C.…”

Section: Evaluating the Corrosion Protection Of Aluminum And Its Allomentioning

confidence: 99%

Testing and analysis techniques in rare earth inhibitor research

Tan

Huang

Mansfeld

2014

Rare Earth-Based Corrosion Inhibitors

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Section: Evaluating the Corrosion Protection Of Aluminum And Its Allomentioning

confidence: 99%

Testing and analysis techniques in rare earth inhibitor research

Tan

Huang

Mansfeld

2014

Rare Earth-Based Corrosion Inhibitors

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“…Previously [3,4], it was found that CeCl 3 .7H 2 O/ NaCl concentration, pH of conversion solution, treatment time and temperature of immersing solutions played a significant role in the production of coating with better corrosion resistance. In the present study, the effects of binary lanthanide conversion films formed over 2009 Al alloy and composites by thermal activation technique were investigated by potentiodynamic polarization and EIS.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Corrosion Resistance of SiC<sub>p</sub>/ 2009 Al by Cerium and Lanthanum Conversion Treatment

Aziz

Zhang

2018

KEM

Self Cite

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The present study investigates the effect of lanthanide chlorides conversion coatings on the corrosion response of the 2009 Al alloy and SiCp reinforced 2009 Al MMCs. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization studies showed that the localized corrosion resistance increased after treatments with solutions having various combinations of CeCl3.7H2O and LaCl3.7H2O, with maximum increase noticed for 5000ppm CeCl3.7H2O. It was found that the protection degree effect obtained under similar coating conditions for 25 vol.% SiCp/2009 Al was relatively higher than 15vol.% SiCp/ 2009 Al MMC, but both of them were less than that of the unreinforced alloy. Scanning electron microscopy (SEM) accompanied with energy dispersive spectroscopy (EDS) analysis revealed the deposition of Ce and/ or La oxides/ hydroxides on cathodic intermetallics/ SiCp and the existence of crevices at the SiCp/ matrix interfaces. X-ray photoelectron spectroscopy (XPS) results indicated that Ce was incorporated as Ce3+ and Ce4+ species in the coatings.

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“…Amongst the various alternatives, recently rare-earth coatings, and particularly cerium, have attracted significant attention [14][15][16][17][18] as cerium forms a stable oxide and hydroxide film. Furthermore, cerium-based oxide hydroxide film is nontoxic and inexpensive [16][17][18]. The commonly employed deposition mechanism involves both the oxidation of aluminum and the reduction of H 2 O 2 in the reaction [14][15][16][17][18][19]:…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, cerium-based oxide hydroxide film is nontoxic and inexpensive [16][17][18]. The commonly employed deposition mechanism involves both the oxidation of aluminum and the reduction of H 2 O 2 in the reaction [14][15][16][17][18][19]:…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of Ce-oxide/hydroxide coated AA7075-T6 prepared by dip immersion method

Danaee

Kanaani²,

Maddahy³

et al. 2014

Turkish J Eng Env Sci

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Abstract:In this study, cerium-based conversion coating was deposited on aluminum 7075-T6 by dip immersion method.Cerium oxide/hydroxide is an environmentally friendly conversion coating. Its corrosion resistance in 3.5 wt.% NaCl solution was investigated by means of electrochemical impedance spectroscopy, potentiodynamic polarization, and surface techniques. The coated samples showed a significant decrease in corrosion rate and the coating resistance increased with increasing immersion time up to 1200 s. In addition, electrochemical impedance data showed that in the presence of cerium oxide/hydroxide conversion coatings, the charge transfer resistance of aluminum increased. Surface morphology and its chemical composition were analyzed by means of scanning electron microscopy and energy dispersive spectroscopy.

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Using EIS to evaluate anti-corrosion properties of the SiCp/5A06 aluminium MMC treated by cerium conversion coatings

Cited by 22 publications

References 20 publications

Testing and analysis techniques in rare earth inhibitor research

Testing and analysis techniques in rare earth inhibitor research

Enhanced Corrosion Resistance of SiC<sub>p</sub>/ 2009 Al by Cerium and Lanthanum Conversion Treatment

Corrosion behavior of Ce-oxide/hydroxide coated AA7075-T6 prepared by dip immersion method

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