Effects of NO<sup>−</sup><sub>3</sub>in NaCl solution on corrosion protection of AZ91D magnesium alloy coated with silane films

Wang, Suxin; Li, Q; Zhong, Xiankang; Li, L Q; Chen, F N; Luo, Fei; Dai, Yan; Gao, Hui; Liu, F; Zhang, H X

doi:10.1179/174591911x13167804920948

Cited by 12 publications

(7 citation statements)

References 39 publications

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“…It is worth mentioning here that, despite a few reports on the remarkable inhibition effects of NO 3 − on the corrosion of magnesium and its alloys [ 10 , 28 , 29 , 30 ], the inhibition mechanism has not been addressed in detail.…”

Section: Inorganic Inhibitorsmentioning

confidence: 99%

“…Nitrates are commonly used as corrosion inhibitors for steel. A few reports also showed their significant positive effect on magnesium alloys [ 10 , 28 , 29 , 30 , 69 ]. A universal high inhibition effect of KNO 3 has been observed by Lamaka et al [ 10 ].…”

Section: Inorganic Inhibitorsmentioning

confidence: 99%

“…Additionally, as with the RE-based inhibitors, cations in the form of salts of nitrates are frequently studied as corrosion inhibitors, overlooking the effect of nitrate anion itself. It has been suggested that the inhibition mechanism of NO 3 − is not related to the competitive adsorption between NO 3 − and Cl − [ 29 ]. Rather, the inhibiting effect of NO 3 − and its reduced form NO 2 − might be related to the interference in Fe 2+ /Fe 3+ /Fe oxidation–reduction–redeposition cycle as one of the main cathodic impurities in most Mg alloys [ 10 ].…”

Section: Inorganic Inhibitorsmentioning

confidence: 99%

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Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

et al. 2022

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Owing to the unique active corrosion protection characteristic of hexavalent chromium-based systems, they have been projected to be highly effective solutions against the corrosion of many engineering metals. However, hexavalent chromium, rendered a highly toxic and carcinogenic substance, is being phased out of industrial applications. Thus, over the past few years, extensive and concerted efforts have been made to develop environmentally friendly alternative technologies with comparable or better corrosion protection performance to that of hexavalent chromium-based technologies. The introduction of corrosion inhibitors to a coating system on magnesium surface is a cost-effective approach not only for improving the overall corrosion protection performance, but also for imparting active inhibition during the service life of the magnesium part. Therefore, in an attempt to resemble the unique active corrosion protection characteristic of the hexavalent chromium-based systems, the incorporation of inhibitors to barrier coatings on magnesium alloys has been extensively investigated. In Part III of the Review, several types of corrosion inhibitors for magnesium and its alloys are reviewed. A discussion of the state-of-the-art inhibitor systems, such as iron-binding inhibitors and inhibitor mixtures, is presented, and perspective directions of research are outlined, including in silico or computational screening of corrosion inhibitors. Finally, the combination of corrosion inhibitors with other corrosion protection strategies is reviewed. Several reported highly protective coatings with active inhibition capabilities stemming from the on-demand activation of incorporated inhibitors can be considered a promising replacement for hexavalent chromium-based technologies, as long as their deployment is adequately addressed.

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Section: Inorganic Inhibitorsmentioning

confidence: 99%

Section: Inorganic Inhibitorsmentioning

confidence: 99%

Section: Inorganic Inhibitorsmentioning

confidence: 99%

See 1 more Smart Citation

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

et al. 2022

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“…Several coating techniques have been adopted to improve the corrosion resistance of magnesium alloys. These include electrodeposition or electroless plating , plasma electrolytic oxidation , chemical conversion , anodizing , and sol–gel process etc., each has their own advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

The corrosion inhibition behaviors of 2′‐hydroxy‐acetophenone for AZ91D magnesium alloy

Song

Zhang

et al. 2014

Materials & Corrosion

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The corrosion inhibition behaviors of 2′‐hydroxy‐acetophenone for AZ91D magnesium alloy in ASTM D1384‐87 corrosive water (model water) were investigated using weight loss and electrochemical measurements. The surface morphologies and composition of films formed on magnesium alloy in solutions with and without 2′‐hydroxy‐acetophenone were examined by scanning electron microscope and Fourier transform infrared spectrum. The results show that inhibition efficiency first increases and then decreases with the increasing 2′‐hydroxy‐acetophenone concentration, its maximum value is at 50 ppm. It is considered that 2′‐hydroxy‐acetophenone anions can chelate with the Mg2+ and form a 2′‐hydroxy‐acetophenone–Mg complex on the magnesium alloy surface, hindering the corrosion development of magnesium alloy.

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“…Interestingly, the nitrate ion was reported to be an efficient corrosion inhibitor 21,26 and a favorable electrolyte for Mg−air batteries. 11,15 Clearly, in this work, when the harsher environment is used, nitrate reduced the utilization efficiency of the Mg anode at the applied discharge current density of 5 mA/cm 2 and caused nonuniform dissolution with a visible layer of corrosion products accumulated over the surface (Figure 2(e,f)).…”

mentioning

confidence: 99%

Synergistic Mixture of Electrolyte Additives: A Route to a High-Efficiency Mg–Air Battery

Snihirova

Wang

Lamaka

et al. 2020

J. Phys. Chem. Lett.

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Magnesium primary cells are currently experiencing a renaissance following the suggestion of new strategies to boost their performance. The strategies suggested will maintain utilization efficiencies of 30–70%, which is considered to be relatively modest. In this work, the highest ever reported level of utilization efficiency of 82% is achieved for a Mg-based primary cell using a synergistic combination of electrolyte additives. It is demonstrated that the joint use of sodium nitrate and salicylate as electrolyte additives allows us to reach the aforementioned utilization efficiency of 5 mA/cm2 via offering an effective suppression of anode self-corrosion and uniform Mg dissolution under discharge conditions.

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Effects of NO⁻₃in NaCl solution on corrosion protection of AZ91D magnesium alloy coated with silane films

Cited by 12 publications

References 39 publications

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

The corrosion inhibition behaviors of 2′‐hydroxy‐acetophenone for AZ91D magnesium alloy

Synergistic Mixture of Electrolyte Additives: A Route to a High-Efficiency Mg–Air Battery

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Effects of NO−3in NaCl solution on corrosion protection of AZ91D magnesium alloy coated with silane films

Cited by 12 publications

References 39 publications

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

The corrosion inhibition behaviors of 2′‐hydroxy‐acetophenone for AZ91D magnesium alloy

Synergistic Mixture of Electrolyte Additives: A Route to a High-Efficiency Mg–Air Battery

Contact Info

Product

Resources

About

Effects of NO⁻₃in NaCl solution on corrosion protection of AZ91D magnesium alloy coated with silane films