The study of the La(NO<sub>;3</sub>)<sub>3</sub> inhibition on X70 pipeline steel in 3.0(wt.%) NaCl solution

Zhang, L.J.; Zhang, Z.; Zhang, J.Q.; Cao, Chenzhong

doi:10.1002/maco.200503864

Cited by 10 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unlike the multiple corrosion studies in CO 2 -free electrolytes where it has been reported that the protection mechanism of rare earth is due to their precipitation (as oxides and hydroxides) by hydrolysis reactions of their metallic cations with the OH − ions produced in the cathodic sites [19,[23][24][25][37][38][39][40], a different mechanism was observed in this study, namely, CO 2 capture and precipitation of lanthanum carbonate (La 2 (CO 3 ) 3 ) as a protective barrier.…”

Section: Co 2 -Capture and Protection Mechanismmentioning

confidence: 60%

Sweet Corrosion Inhibition by CO2 Capture

Porcayo-Calderón

Cantó²,

Martinez-de-la-Escalera³

et al. 2022

Molecules

View full text Add to dashboard Cite

The most practical and economical way to combat the problems derived from CO2 corrosion (sweet corrosion) is the use of corrosion inhibitors of organic origin. Its main protection mechanism is based on its ability to adsorb on the metal surface, forming a barrier between the metal surface and the aggressive medium. However, despite its excellent performance, its inhibition efficiency can be compromised with the increase in temperature as well as the shear stresses. In this study, the use of an inorganic inhibitor is proposed that has not been considered as an inhibitor of sweet corrosion. The reported studies are based on using LaCl3 as a corrosion inhibitor. Its behavior was evaluated on 1018 carbon steel using electrochemical measurements, such as potentiodynamic polarization curves, open-circuit potential measurements, linear polarization resistance measurements, and electrochemical impedance. The results showed an inhibition efficiency of the sweet corrosion process greater than 95%, and that the inhibition mechanism was different from the classic corrosion process in CO2-free electrolytes. In this case, it was observed that the inhibitory capacity of the La3+ cations is based on a CO2-capture process and the precipitation of a barrier layer of lanthanum carbonate (La2(CO3)3).

show abstract

Section: Co 2 -Capture and Protection Mechanismmentioning

confidence: 60%

Sweet Corrosion Inhibition by CO2 Capture

Porcayo-Calderón

Cantó²,

Martinez-de-la-Escalera³

et al. 2022

Molecules

View full text Add to dashboard Cite

show abstract

“…Each of them is associated with the slope changes of the relation log f vs log |Z|, in the three regions of the frequency. e formation and evolution of the rst two time constants can be related to the typical mechanism of precipitation of hydroxides and oxides for corrosion process inhibited by the addition of compounds based on rare earths [21,[33][34][35][36]. In general, the formation of the protective lms is due to the hydrolysis reactions of the lanthanide cations with the OH − ions generated at the cathodic sites.…”

Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 99%

Sustainable Development of Corrosion Inhibitors from Electronic Scrap: Synthesis and Electrochemical Performance

Porcayo-Calderón

Ramos-Hernández

Porcayo-Palafox

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Due to its high content of rare earths, the use of permanent magnets can be a sustainable alternative for the synthesis of environmentally friendly corrosion inhibitors in order to replace the use of highly toxic inhibitors, as well as the use of rare earth salts of high purity and high cost. In this study, the recovery of rare earths from permanent magnet wastes and their synthesis to chloride salts were carried out. Rare earth chlorides were evaluated as corrosion inhibitors by electrochemical techniques on API X70 steel in a 3.5% NaCl solution. Both anodic and cathodic polarization curves were made, and measurements of both open-circuit potential, linear polarization resistance, and electrochemical impedance were made. Results show that the inhibitor synthesized is a mixture of Nd and Pr chloride. Its performance as a corrosion inhibitor is superior to that of high purity Nd chloride (analytical reagent). The results show that the use of electronic scrap is a sustainable source for the synthesis of green corrosion inhibitors with low carbon footprint.

show abstract

“…e increase in pH of the cathodic sites causes the precipitation of compounds of the type Me(OH) 3 , which subsequently are transformed to more stable metal oxides (Me 2 O 3 ). e mechanism of precipitation of both rare earth oxides and hydroxides has been cited in the literature previously [7,[27][28][29][30]. In general, the hydrolysis reaction of lanthanide cations (Ln) can occur according to the following reactions:…”

Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 99%

Effect of Nd³⁺ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride‐Rich Environments

Escalera

Ramos-Hernández

Porcayo-Palafox

et al. 2018

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In this study, the effect of the addition of Nd 3+ ions as a corrosion inhibitor of the API X70 steel in a medium rich in chlorides was evaluated. e performance of the Nd 3+ ions was evaluated by means of electrochemical techniques such as potentiodynamic polarization curves, open circuit potential measurements, linear polarization resistance, and electrochemical impedance spectroscopy, as well as by means of scanning electron microscopy and EDS measurements. e results showed that Nd 3+ ions reduce the corrosion rate of steel at concentrations as low as 0.001 M Nd 3+ . At higher concentrations, the inhibition efficiency was only slightly affected although the concentration of chloride ions was increased by the addition of the inhibitor. e adsorption of the Nd 3+ ions promotes the formation of a protective layer of oxides/hydroxides on the metal surface, thereby reducing the exchange rate of electrons. Nd 3+ ions act as a mixed inhibitor with a strong predominant cathodic effect.

show abstract

The study of the La(NO_;3)₃ inhibition on X70 pipeline steel in 3.0(wt.%) NaCl solution

Cited by 10 publications

References 18 publications

Sweet Corrosion Inhibition by CO2 Capture

Sweet Corrosion Inhibition by CO2 Capture

Sustainable Development of Corrosion Inhibitors from Electronic Scrap: Synthesis and Electrochemical Performance

Effect of Nd³⁺ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride‐Rich Environments

Contact Info

Product

Resources

About

The study of the La(NO;3)3 inhibition on X70 pipeline steel in 3.0(wt.%) NaCl solution

Cited by 10 publications

References 18 publications

Sweet Corrosion Inhibition by CO2 Capture

Sweet Corrosion Inhibition by CO2 Capture

Sustainable Development of Corrosion Inhibitors from Electronic Scrap: Synthesis and Electrochemical Performance

Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride‐Rich Environments

Contact Info

Product

Resources

About

The study of the La(NO_;3)₃ inhibition on X70 pipeline steel in 3.0(wt.%) NaCl solution

Effect of Nd³⁺ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride‐Rich Environments