Inhibitive effect of sodium molybdate on corrosion of AZ31 magnesium alloy in chloride solutions

Osipenko, M. A.; Kharitonov, D. S.; Kasach, Aliaksandr A.; Ryl, Jacek; Adamiec, Janusz; Курило, И. И.

doi:10.1016/j.electacta.2022.140175

Cited by 38 publications

(45 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The acceleration occurs due to the partial surface coverage, which in turn may intensify the local corrosion. A very similar high corrosion inhibition performance of Na 2 MoO 4 was also reported for AZ31 magnesium substrate [ 63 ], which may be reflective of its universal effect. Molybdates have low harmfulness to the environment and can be considered a promising substitute for chrome(VI)-based inhibitors.…”

Section: Inorganic Inhibitorssupporting

confidence: 78%

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

et al. 2022

View full text Add to dashboard Cite

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.

show abstract

Section: Inorganic Inhibitorssupporting

confidence: 78%

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

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The value of E p in corrosive media was −586 mV, and the values of E p in corrosive media containing 5, 10, 15, 20, and 25 mL·L −1 of composite inhibitor were −191, −114, −45, −15, and 7 mV, respectively. Higher values of E p with an increase in composite inhibitor concentrations showed the formation of a more firm protective layer on the corrosive material surface 11 …”

Section: Resultsmentioning

confidence: 96%

Study on the corrosion inhibition performance of composite inhibitor on carbon steel in stone processing wastewater

Xiang,

Lu,

Zhu

et al. 2023

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

The circular saw blade, which is mainly composed of carbon steel, is used to cut the stone. However, the carbon steel is easily corroded in stone processing wastewater, shortening its lifespan. In this study, a new composite inhibitor of sodium nitrite, sodium molybdate, sodium silicate, sodium tungstate, and sodium citrate was investigated firstly, and then, its inhibition efficiency for carbon steel in stone processing wastewater was explored using electrochemical measurements and weight loss measurements. The results showed that the composite inhibitor as a mixed‐type inhibitor displayed good inhibitory performance. Surface analysis including scanning electron microscope, atomic force microscope, X‐ray photoelectron spectroscopy analysis, and contact angle test further revealed the form of protection of the steel surface by composite corrosion inhibitors. The prepared composite inhibitor exhibited excellent corrosion resistance for carbon steel in stone processing wastewater, and it is believed that the composite inhibitor has certain application potential in industries.

show abstract

“…The anodic slope increased with increasing concentration of molybdate in the solution inhibitor added. However, it should be noted that this parameter was also influenced by the inhibitor film formed [29] [30].…”

Section: Tafel Polarization Measurementmentioning

confidence: 98%

Untitled

2023

Jurnal Polimesin

View full text Add to dashboard Cite

Steel widely used as pipelines in oil and gas transmission was susceptible to corrosion attack. In the present study, the corrosion inhibitions of Sodium Molybdate (SM) and Ethoxylated Fatty Amine (EFA) for corrosion of carbon steel (API 5L X-52 steel welded pipelines) at base metal (BM), weld metal (WM), and Heat Affected Zone (HAZ) in 3.5% NaCl solution was studied experimentally using potential dynamic polarization and Electrochemical Impedance Spectroscopy (EIS). The results indicated that Tafel polarization investigations showed that the corrosion potentials shift to a positive direction in the Based Metal (BM), HAZ, and Weld Metal (WM) areas, and the corrosion rate density moves to the left. The decreased corrosion rate was related to form a passive film on the steel surface. EIS measurements show that two-time constants appear, the first in the mid-high frequency range related to the corrosion process between the metal surface and Mo ions. The second in the low-frequency range is related to the formation of the two metal layers, Oxide/hydroxide. Thus, the corrosion protection of steel has been confirmed. The most excellent inhibitor efficiency, when the concentration of the SM was 0.4%, and EFA was 400 ppm, occurred in BM, WM, and HAZ, respectively.

show abstract

Inhibitive effect of sodium molybdate on corrosion of AZ31 magnesium alloy in chloride solutions

Cited by 38 publications

References 43 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

Study on the corrosion inhibition performance of composite inhibitor on carbon steel in stone processing wastewater

Untitled

Contact Info

Product

Resources

About