Impact of curing on the corrosion performance of an eco-friendly silane sol–gel coating on 304L stainless steel

RSC Advances ◽  
2015 ◽  
Vol 5 (54) ◽  
pp. 43225-43233 ◽  
Author(s):  
F. Rafiaei ◽  
R. Naderi ◽  
C. Dehghanian
Keyword(s):  
Stainless Steel ◽  
Surface Analysis ◽  
Sol Gel ◽  
Electrochemical Methods ◽  
304L Stainless Steel ◽  
Corrosion Performance ◽  
Stainless Steel 304L ◽  
Protective Performance

In this study, the effect of curing on the structure and protective performance of an eco-friendly silane sol–gel coating on stainless steel 304L was investigated using electrochemical methods as well as surface analysis.

Improvement in the corrosion resistance of stainless steel 304L in sodium chloride solution by a nanoclay incorporated silane coating

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 706-716 ◽  
Author(s):  
F. Ansari ◽  
R. Naderi ◽  
C. Dehghanian
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Sodium Chloride ◽  
Corrosion Protection ◽  
Chloride Solution ◽  
Sodium Chloride Solution ◽  
Sol Gel ◽  
Nacl Solution ◽  
Stainless Steel 304L ◽  
Silane Coating

An eco-friendly silane sol–gel coating incorporating nanoclay was formulated to provide an effective corrosion protection for stainless steel 304L in a NaCl solution.

Corrosion performance of TiO2 coated type 304L stainless steel in nitric acid medium

2010 ◽  
Vol 204 (16-17) ◽  
pp. 2782-2788 ◽  
Author(s):  
N. Padhy ◽  
Subhash Kamal ◽  
Ramesh Chandra ◽  
U. Kamachi Mudali ◽  
Baldev Raj
Keyword(s):  
Stainless Steel ◽  
Nitric Acid ◽  
Acid Medium ◽  
304L Stainless Steel ◽  
Nitric Acid Medium ◽  
Corrosion Performance

Electrochemical noise assessment of effect of sol parameters on the performance of an eco-friendly silane sol-gel coating on 304L stainless steel

2018 ◽  
Vol 47 (5) ◽  
pp. 444-452
Author(s):  
Fahimeh Ansari ◽  
Reza Naderi ◽  
Fahimeh Rafiaei
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Electrochemical Noise ◽  
Sol Gel ◽  
304L Stainless Steel ◽  
Nacl Solution ◽  
Noise Resistance ◽  
Content Type ◽  
Ph Values ◽  
Silane Solution

Propose This paper aims to access the protective function of hybrid sol-gel coatings deposited on 304L stainless steel substrate in silane solutions containing a mixture of tetraethoxysilane, methyltriethoxysilane and glycidyloxypropyltrimethoxysilane with different pH values during various immersion periods. Design/methodology/approach The 304L stainless steels coated through 10 and 30 s of immersion in the silane solutions with pH values of 2.1 and 2.8 were exposed to NaCl solution. The corrosion resistance of the coated substrates was studied through taking advantage of electrochemical noise method as well as atomic force microscopy (AFM), water contact angle and field emission-type scanning electron microscopy (FESEM) surface analysis. Findings The electrochemical current noise, PSD (I) plot, noise resistance and characteristic charge as parameters extracted from electrochemical noise method indicated the superiority of eco-friendly silane coating deposited on the substrate surface during 10 s exposure to the solution, due to the film uniformity and homogeneity as confirmed by FESEM and AFM. Moreover, immersion of the stainless steel in the silane solution with pH 2.1, characterized by higher hydrolysis ratio, led to more effective corrosion control in the NaCl electrolyte according to the results of electrochemical noise and FTIR measurements. Research limitations/implications The noise resistance and characteristic charge as electrochemical noise parameters were only used in this research to evaluate the protective behavior of the water-based silane sol-gel coatings. Future studies should examine the correlation between electrochemical noise data and the parameters extracted from other electrochemical methods, e.g. electrochemical impedance spectroscopy. Practical implications The data obtained in this research may provide an effective approach based on electrochemical noise method to screen the silane sol-gel coatings for protection of metallic substrates against corrosion. Originality/value According to the literature, no report can be found studying the effect of immersion time on a silane solution, including glycidyloxypropyltrimethoxysilane, tetraethoxysilane and methyltriethoxysilane, as well as the silane solution pH on the corrosion resistance of 304L stainless steel in NaCl solution through electrochemical noise method.

Improvement of the corrosion performance of 304L stainless steel by a nanostructure hybrid coating/henna extract

2013 ◽  
Vol 61 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Mojtaba Nasr-Esfahani ◽  
Mehdi Pourriahi ◽  
Abolfazl Motalebi ◽  
Mahmoud Zendehdel
Keyword(s):  
Thin Film ◽  
Stainless Steel ◽  
Saline Solution ◽  
Sol Gel ◽  
Physiological Saline ◽  
Hybrid Coating ◽  
Content Type ◽  
Stainless Steel 304L ◽  
Physiological Saline Solution ◽  
Henna Extract

Purpose – The purpose of this investigation was to study the corrosion protection and structural characteristics of a hybrid organic-inorganic thin film preloaded with green corrosion inhibitor for anticorrosive protection of stainless steel 304L. Design/methodology/approach – An ethanol solution of the polymerized 3-methacryloxypropyltrimethoxysilan and tetraethylorthosilicate was mixed with henna extract to give homogeneous sols. The morphology, composition and adhesion of hybrid sol-gel coatings were examined by SEM, EDX and pull-off tests, respectively. The surface chemistry of the hybrid sol-gel coatings was investigated with polarization scans and electrochemical impedance spectroscopy (EIS) in the physiological saline solution. Findings – The polarization curves and EIS data were in agreement. Henna extract additions significantly increased the corrosion protection capability of the sol-gel thin film to greater than 85 percent in the physiological saline solution. In addition, the doped hybrid coating on stainless steel 304L was useful in 3.5 percent NaCl solution. Originality/value – There have been few reports on the hybrid organic-inorganic thin films preloaded with corrosion inhibitor, as described in the paper, and this environmentally friendly coating on stainless steel 304L was found to be highly effective for industrial applications.

RELAXATION PEAKS OF COLD WORKED 304L STAINLESS STEEL

1981 ◽  
Vol 42 (C5) ◽  
pp. C5-193-C5-198 ◽  
Author(s):  
N. Igata ◽  
H. B. Chen ◽  
K. Miyahara ◽  
T. Uba
Keyword(s):  
Stainless Steel ◽  
304L Stainless Steel ◽  
Cold Worked
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