Study of vanadium-based chemical conversion coating on the corrosion resistance of magnesium alloy

Yang, Kai; Ger, Ming-Der; Hwu, Wen-Hwa; Sung, Yun Mo; Liu, Y.C.

doi:10.1016/j.matchemphys.2006.08.007

Cited by 137 publications

(46 citation statements)

References 14 publications

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“…However, only a few studies are reported on the application of vanadium-based coatings on aluminum alloys [5][6][7][8][9][10] and magnesium alloys [11]. The present work was intended to study the corrosion properties of the V-treated layer on zinc surfaces by using electrochemical measurements and neutral salt spray (NSS) tests.…”

Section: Introductionmentioning

confidence: 99%

Corrosion protection properties of vanadium films formed on zinc surfaces

Zou

2011

Rare Metals

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Vanadium films were prepared on zinc surfaces by using a solution containing vanadate. Corrosion protection properties of vanadium-treated (V-treated), chromium-treated (Cr-treated), and untreated zinc surfaces in contact with a 3.5 wt.% NaCl solution were studied using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and neutral salt spray (NSS) tests. According to these results, the V-treated layer significantly improved the corrosion resistance of zinc surfaces. In comparison with the Cr-treated layer, the V-treated layer exhibited a better corrosion resistance. The composition of the V-treated layer was studied using X-ray photoelectron spectroscopy (XPS). XPS measurements indicated that the vanadium layer formed on zinc surfaces and the vanadium-rich coating was a hydrated oxide with a composition of V 2 O 5 , VO 2 , and its hydrates such as V 2 O 5 ⋅nH 2 O and VO(OH) 2 .

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Section: Introductionmentioning

confidence: 99%

Corrosion protection properties of vanadium films formed on zinc surfaces

Zou

2011

Rare Metals

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“…Seeing from Figure 2(d), when the treatment time reached 5 min, an integral coating with some meshy cracks on it was formed on the specimen, which was similar with other kinds of conversion coatings [17,18]. The grinding trace couldn't be seen there, which suggested that the phytic acid conversion coating became comparatively thick and flat.…”

Section: Formation Process Of Phytic Acid Conversion Coatingmentioning

confidence: 67%

Formation process and properties of phytic acid conversion coatings on magnesium

Liu

Guo

Huang

2012

Anti-Corrosion Methods and Materials

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“…Considerable literature is available on corrosion-resistant coatings for magnesium and its alloys, and Chen et al have published an excellent review article of conversion coatings for magnesium by coating type and by pretreatment process [10]. However, some of methods include harmful chemicals such as chromate [2], fluoride [11], and vanadium [12], which is contrary to the environmental protection regulative [13]. In addition, conversion coatings based on stanate [14,15], rare elements [16], and ionic liquids [17], at this point, are not applicable for practical use.…”

Section: Introductionmentioning

confidence: 99%

Effective and Environmentally Friendly Nickel Coating on the Magnesium Alloy

Rončević

Buzuk

Vladislavić

2016

Metals

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Abstract:The low density and good mechanical properties make magnesium and its alloys attractive construction materials in the electronics, automotive, and aerospace industry, together with application in medicine due to their biocompatibility. Magnesium AZ91D alloy is an alloy with a high content of aluminum, whose mechanical properties overshadow the low corrosion resistance caused by the composition of the alloy and the existence of two phases: α magnesium matrix and β magnesium aluminum intermetallic compound. To improve the corrosion resistance, it is necessary to find an effective protection method for the alloy surface. Knowing and predicting electrochemical processes is an essential for the design and optimization of protective coatings on magnesium and its alloys. In this work, the formations of nickel protective coatings on the magnesium AZ91D alloy surface by electrodeposition and chemical deposition, are presented. For this purpose, environmentally friendly electrolytes were used. The corrosion resistance of the protected alloy was determined in chloride medium using appropriate electrochemical techniques. Characterization of the surface was performed with highly sophisticated surface-analytical methods.

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Study of vanadium-based chemical conversion coating on the corrosion resistance of magnesium alloy

Cited by 137 publications

References 14 publications

Corrosion protection properties of vanadium films formed on zinc surfaces

Corrosion protection properties of vanadium films formed on zinc surfaces

Formation process and properties of phytic acid conversion coatings on magnesium

Effective and Environmentally Friendly Nickel Coating on the Magnesium Alloy

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