scholarly journals Characterization of Polyorganosilazane-Derived Hybrid Coatings for the Corrosion Protection of Mild Steel in Chloride Solution

Coatings ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 680 ◽  
Author(s):  
Michele Fedel ◽  
Francisco Javier Rodríguez Gómez ◽  
Stefano Rossi ◽  
Flavio Deflorian
Keyword(s):  
Mild Steel ◽  
Corrosion Protection ◽  
Steel Substrate ◽  
Sol Gel ◽  
Low Carbon Steel ◽  
Hybrid Coatings ◽  
Low Carbon ◽  
Hybrid Layer ◽  
Minimum Thickness ◽  
Dry Film Thickness

Polysilazane (PSZ) have been used for many years as precursors for the development of ceramic materials. Recently, hydrocarbon-substituted polysilazane, which is called organopolysilazane (OPSZ), has been proposed as possible alternative to silanes for the corrosion protection of metals by the sol gel route. In this work, polymethyl(hydro)/polydimethylsilazane-derived coatings were deposited on low-carbon steel for corrosion protection purposes. The effect of the OPSZ precursor concentration (10–40 v/v %) in butyl-acetate on the final properties of the coatings was investigated. Coatings in the thickness range of 1 to 3.5 µm were obtained. The experimental results showed that the concentration of OPSZ in the solvent affects the structural properties as well as the dry film thickness of the hybrid layer. In particular, the network arrangement seems to be influenced by the dilution of the OPSZ precursors solution. The electrochemical characterization revealed that a minimum thickness of about 2 to 3 µm is needed to provide the mild steel substrate with enhanced corrosion protection properties compared to the bare substrate. Comparing the obtained results with literature data, it seems that OPSZs are a potential alternative to coatings derived from organisilicon precursors.

scholarly journals New architectured hybrid sol-gel coatings for wear and corrosion protection of low-carbon steel

2016 ◽  
Vol 99 ◽  
pp. 337-345 ◽  
Author(s):  
Lavollée Claire ◽  
Gressier Marie ◽  
Garcia Julien ◽  
Sobrino Jean-Michel ◽  
Reby Jean ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Wear And Corrosion

Anti-corrosion performance of aniline trimer-containing sol–gel hybrid coatings for mild steel substrate

2018 ◽  
Vol 87 (2) ◽  
pp. 464-477 ◽  
Author(s):  
Yuwei Ye ◽  
Wei Liu ◽  
Zhiyong Liu ◽  
Dawei Zhang ◽  
Haichao Zhao ◽  
...  
Keyword(s):  
Mild Steel ◽  
Steel Substrate ◽  
Sol Gel ◽  
Hybrid Coatings ◽  
Corrosion Performance ◽  
Mild Steel Substrate

Anti-corrosion properties of oligoaniline modified silica hybrid coatings for low-carbon steel

2018 ◽  
Vol 235 ◽  
pp. 61-70 ◽  
Author(s):  
Yuwei Ye ◽  
Dawei Zhang ◽  
Zhiyong Liu ◽  
Wei Liu ◽  
Haichao Zhao ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Hybrid Coatings ◽  
Low Carbon ◽  
Modified Silica ◽  
Corrosion Properties ◽  
Silica Hybrid

Synthesis of TiAlN based coating on mild steel substrate using combined laser/sol-gel technique

2010 ◽  
Vol 204 (16-17) ◽  
pp. 2539-2545 ◽  
Author(s):  
M. Sundar ◽  
A.M. Kamara ◽  
P.T. Mativenga ◽  
L. Li
Keyword(s):  
Mild Steel ◽  
Steel Substrate ◽  
Sol Gel ◽  
Gel Technique ◽  
Mild Steel Substrate

Effects of Dipping Pretreatment on the Flame Deposition of Carbon Nanostructure on the Low Carbon Steel Substrate

2013 ◽  
Vol 734-737 ◽  
pp. 2269-2272
Author(s):  
Hong Mei Zhu ◽  
Shu Mei Lei ◽  
Tong Chun Kuang
Keyword(s):  
Nitric Acid ◽  
Carbon Steel ◽  
Acid Solution ◽  
Carbon Nanofibers ◽  
Carbon Nanoparticles ◽  
Steel Substrate ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Carbon Nanostructure ◽  
Flame Method

In this paper, a low carbon steel was used as the substrate to prepare the carbon nanostructural materials by the oxygen-acetylene flame method. The experimental results show that the composite products including nodular carbon nanoparticles and amorphous carbon were obtained on the substrate after a mechanical polishing pretreatment. Comparatively, the short tubular carbon nanofibers with the diameter of around 100 nm were deposited on the substrate pretreated by dipping in the concentrated nitric acid solution. The possible mechanism for the growth of such carbon nanofibers was discussed.

Effect of coating composition on the anticorrosion performance of a silane sol–gel layer on mild steel

RSC Advances ◽  
2015 ◽  
Vol 5 (129) ◽  
pp. 106485-106491 ◽  
Author(s):  
A. Foroozan E. ◽  
R. Naderi
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Steel Substrate ◽  
Sol Gel ◽  
Gel Layer ◽  
Gel Film ◽  
Coating Composition ◽  
Anticorrosion Performance ◽  
Protective Performance ◽  
Mild Steel Substrate

In this study, the effect of coating composition on the protective performance of an eco-friendly silane sol–gel film applied on a mild steel substrate was investigated using electrochemical impedance spectroscopy and surface analysis methods.

Morphology and Mechanical Properties of a Composite Coating by Electrostatic Dry Spray Method

2021 ◽  
Vol 886 ◽  
pp. 168-174
Author(s):  
Mohanad N. Al-Shroofy ◽  
Hanna A. Al-Kaisy ◽  
Rabab Chalaby
Keyword(s):  
Composite Coating ◽  
Steel Substrate ◽  
Low Carbon Steel ◽  
Spray Coating ◽  
Manufacturing Cost ◽  
Low Carbon ◽  
Spray Method ◽  
Coating Layers ◽  
Al Powder ◽  
Electrostatic Spray

Powder spray coating was used for many applications such as paint decoration and protection against corrosive environments. The electrostatic spray method is used to lower the manufacturing cost and the environmental effect during the production process. It is done by electrostatic device and spray gun to create a layer on the substrate to play a protective role. Different dry powders were mixed to form a composite mixture consisted of Al2O3 and SiC or ZrSiO4 with Al powder as a binder. The powders mixture was deposited by electrostatic spray technique with a high voltage of 15 kV on a low carbon steel substrate of (40 x 10 x 4) mm in dimensions. Two groups of mixtures were used to form the coating layers. Powders of Al2O3 with (20 and 40) weight percent (wt%) of SiC as the first group and (20 and 40) wt% of ZrSiO4 as the second group were used. 5 wt% of Al powder was added as a binder, and the samples were heat treated at 900 C° for 2 hours. A detailed characterization of the composite coating layers was performed using XRD, SEM, and EDX, as well as, micro-hardness measurements. The obtained surface composite layers were smooth and having good particle distribution which leads to enhance roughness values (Ra). Furthermore, the hardness increased with increasing the amount of carbide and zirconia, and the obtained layers show no presence of defects or cracks.

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