Effect of SiO2:Na2O molar ratio of sodium silicate on the corrosion resistance of silicate conversion coatings

Yuan, Meirong; J, Lu; Kong, Gang

doi:10.1016/j.surfcoat.2009.10.024

Cited by 69 publications

(30 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Beyond, tuffs are more efficient than montmorillonite. This is in accordance with results obtained by Yuan et al [38]. In a recent work, these authors found that corrosion resistance of hot-dip galvanized (HDG) steels in sodium silicate (mixture of SiO2 and Na2O) was increased by the SiO2/Na2O molar ratio.…”

Section: Electrochemical Impedance Spectroscopysupporting

confidence: 91%

Clays valorization as corrosion inhibitors for E400 reinforcing steel

Gassama

Fall

Yade

et al. 2016

Ovidius University Annals of Chemistry

View full text Add to dashboard Cite

Abstract. The behavior of E400 steel, a constructional steel widely used in Senegal, was studied in aqueous NaCl solution in the presence of two types of clay: volcanic tuffs, and sedimentary montmorillonite. The protection efficiency of these compounds were electrochemically assessed (corrosion potential variation curves, polarization curves and electrochemical impedance spectroscopy) at various inhibitor contents. The results obtained showed that these inhibitors present an inhibitory efficacy of about 70% for an optimal concentration of 0.60% for the tuffs and 62% for a maximum content of 0.50% for montmorillonite.

show abstract

Section: Electrochemical Impedance Spectroscopysupporting

confidence: 91%

Clays valorization as corrosion inhibitors for E400 reinforcing steel

Gassama

Fall

Yade

et al. 2016

Ovidius University Annals of Chemistry

View full text Add to dashboard Cite

show abstract

“…Multi-analytical technique analysis has indeed shown the formation of a thin outer layer of polymerized http://dx.doi.org/10.1016/j.electacta.2015.07.107 0013-4686/© 2015 Elsevier Ltd. All rights reserved. silica attached to an inner layer containing zinc silicate over the galvanized steel [11][12][13]. The final layer structure of the protecting surface film varied with the actual treatment procedure performed, that involved electrochemical treatment and surface polarization for optimization purposes [11].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the corrosion protection of steel by anodic processing in metasilicate solution using the scanning vibrating electrode technique

Izquierdo

Fernández-Pérez

Martín-Ruíz

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

Keywords: corrosion protection steel metasilicate ions surface modification anodic treatment scanning vibrating electrode technique a b s t r a c t Anodic processing in metasilicate solution was investigated for the improvement of the corrosion resistance of various steels, namely F111 low alloy carbon and 304 stainless steels, as well as on galvanized steel cut edges. The efficiency of the prior electrochemical treatment for each material was tested during their exposure to naturally-aerated aqueous chloride solutions of different aggressiveness. Analysis was performed using the scanning vibrating electrode technique (SVET) in order to detect local ionic current distributions over the samples under study associated to the corrosion reactions. The onset of corrosion processes was greatly inhibited after anodic processing with metasilicate on both the low alloy carbon steel and the galvanized steel cut edge. Conversely, SVET analysis of unbiased 304 steel samples tested in 0.1 M chloride-containing solution did not show differences between pristine and metasilicate-treated surfaces. Differences in the electrochemical reactivity between treated and non-treated 304 steel surfaces were only observed after partial removal of the corresponding passive layers under operator-controlled polarization.

show abstract

“…Once all the nanosized silica is collected, it was dried in an oven for 48 h at a temperature of 50 C to obtain the nanosilicate powder. Then, as for preparing the nanosilicate powder for corrosion inhibitor, past method was followed in which the inhibition performance of nanosilicate is influenced by the molar ratio of SiO 2 /Na 2 O [14].…”

Section: Preparation and Extraction Methods Of Nanosilicate From Paddymentioning

confidence: 99%

Nano-Silicate from Paddy Waste as Natural Corrosion Inhibitor

Othman¹,

Awizar²,

Dasuki³

2017

Rice - Technology and Production

View full text Add to dashboard Cite

The highly advance usage of an agricultural waste of rice husk ash (RHA) from Oryza sativa L. was developed by extracting the nanosilicate contained in RHA as a corrosion inhibitor for carbon steel in 0.5 M NaCl media. The corrosion measurement was studied using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), surface analysis, and adsorption isotherm study. The extracted nanosilicate powder from RHA was analyzed using Fourier Transform Infrared Spectroscopy (FTIR) to identify the presence of functional groups (SiO 2 ), whereas X-ray diffraction (XRD) to identify the phase of silica from RHA. The particle size of nanosilicate was confirmed by transmission electron microscopy (TEM) and Zetasizer analysis, and the results show particle size of nanosilicate in the range of 5-10 nm. The maximum inhibition efficiency (IE%) is up to 88% in NaCl media. On the other hand, the inhibitor adsorption properties follow Temkin isotherm with mixed type of inhibition properties. Surface analysis on specimen that was treated with nanosilicate was smoother with fewer pits and pores than untreated specimen. In future perspectives, nanosilicate from RHA has a promising advantages and imminent applications for industries revolving with composites, biomedicine, and many more.

show abstract

Effect of SiO2:Na2O molar ratio of sodium silicate on the corrosion resistance of silicate conversion coatings

Cited by 69 publications

References 31 publications

Clays valorization as corrosion inhibitors for E400 reinforcing steel

Clays valorization as corrosion inhibitors for E400 reinforcing steel

Evaluation of the corrosion protection of steel by anodic processing in metasilicate solution using the scanning vibrating electrode technique

Nano-Silicate from Paddy Waste as Natural Corrosion Inhibitor

Contact Info

Product

Resources

About