Corrosion protection of AISI 1018 steel using Co-doped TiO 2 /polypyrrole nanocomposites in 3.5% NaCl solution

Ladan, Magaji; Basirun, Wan Jeffrey; Kazi, S.N.; Rahman, Fariza Abdul

doi:10.1016/j.matchemphys.2017.01.085

Cited by 44 publications

(15 citation statements)

References 45 publications

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“…Corrosion processes are able to extract metal atoms from the metal lattice, which atoms during the process pass to corrosion products. Corrosion causing local diffusion of metal atoms is particularly dangerous [17][18][19][20][21][22][23][24][25]. The problem is huge because low-carbon structural steel is sensitive to corrosion.…”

Section: Introductionmentioning

confidence: 99%

Corrosion effect of 20 % NaCl solution on basic carbon structural S235JR steel

Lipiński

2017

Engineering for Rural Development

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Abstract. All structural steels offer economical properties of mean strength and low corrosion resistance. There are ferritic-perlitic steels and very often used as construction materials in industrial applications. The purpose of this article is to investigate corrosion resistance using weight loss and profile roughness parameters of typical structural steel in grade S235JR in 20 % NaCl solution in distilled water. Corrosion tests show that the tested steel in both corrosive environments is characterized through continuous corrosion. Roughness parameters for every of the research times determine the size of steel corrosion.Keywords: steel, structural steel, carbon steel, corrosion, corrosion rate, profile roughness. IntroductionSteel is the most popular constructional material. The mechanical, physical and chemical properties of low carbon steel are under the influence of different factors, including the chemical composition and manufacturing technology.The properties and practical applications of all constructional materials, including steel, are determined mostly by their microstructure. The structural low carbon steels have a ferritic-perlitic microstructure. The percentage of each microstructure phase shapes the properties of the steel. The microstructure depends on the manufacturing technology and heat treatments of steel. Corrosion resistance is an important factor of the quality and application of structural steels [1][2][3][4][5][6][7][8][9][10][11][12].Low-carbon steel as a construction material is also very popular. Steels from this group have wide range of industrial applications, mainly as a welded material. The microstructure and properties of these steels are still tested to improve the quality. These steels are willingly used because they are cheap and well welded. Steel structures with low-carbon structural steel can be built by welding quickly at a low price, but still the main problem is their corrosion protection [13][14][15][16].The influence of inner structural stresses caused by the corrosion notches as well as stresses resulting from production with stresses resulting from external load plays an important role in premature destruction of the construction by formation and development of initiation cracks and cracks. Structural stresses also depend on the percentage of each phase in the microstructure and their shape. Microstructure morphology is shaped in the process of manufacturing, heat treatment and welding processes. Corrosion processes are able to extract metal atoms from the metal lattice, which atoms during the process pass to corrosion products. Corrosion causing local diffusion of metal atoms is particularly dangerous [17][18][19][20][21][22][23][24][25]. The problem is huge because low-carbon structural steel is sensitive to corrosion. The corrosion rate first of all depends on different environment [2; 5; 13; 20].One of the corrosive environmental factors are chlorides. They are mainly found on the coast as an aerosol of sea water, and in large quantities in large industrial ar...

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Section: Introductionmentioning

confidence: 99%

Corrosion effect of 20 % NaCl solution on basic carbon structural S235JR steel

Lipiński

2017

Engineering for Rural Development

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“…Polypyrrole/TiO 2 nanocomposite and PPy/co-doped TiO 2 nanocomposite exhibited improved corrosion protection on AISI steel as observed in EIS, OCP, and Potentiodynamic polarization measurements. An insignificant decrease in the impedance was observed for 3.5 wt% NaCl immersion of the coatings (Ladan et al, 2017). The increased surface area of PPy on TiO2 particles was attributed to high chances on the surface of PPy for oxygen reduction (Mahmoudian et al, 2013).…”

Section: Resultsmentioning

confidence: 91%

Polypyrrole/Metal Oxides-Based Composites/Nanocomposites for Corrosion Protection

2020

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Corrosion is of paramount interest to researchers all around the world owing to its disastrous impact on both the economy and people's safety. New strategies based on novel materials have been employed to mitigate corrosion. Conducting polymerbased nanocomposites are a class of materials which have shown promise for corrosion protection. This paper will focus on the specific case of the Conducting polymer-based nanocomposites for corrosion protection, and one important case will be discussed in detail. Corrosion protection offered by Polypyrrole (PPy)/Fe 2 O 3 based composite coating for cold rolled substrate is characterized in this paper by electrochemical impedance spectroscopy and open circuit potential measurements. It was found that PPy/Fe 2 O 3 based composite coating provides better corrosion performance after 40 days exposure to ASTM B117 salt fog test conditions. This improved performance was attributed to the increased surface area of PPy and passivating nature of the composite resulting from the redox activity provided by PPy.

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“…Table 3 provides results of the polarization measurement showing the values of the electrochemical parameters. Generally, a greater E corr and lesser I corr and CR refer to better corrosion resistance [29]. Similarly, the polarization curves of the PU coatings are presented in figure 5.…”

Section: Potentiodynamic Polarizationmentioning

confidence: 91%

“…After 30 days of immersion (c), similar orders of magnitude in impedance as in after 15 days were observed, with most of the coated panels showing two times constant. This result revealed that the increase of the percentage of PET in the PU influences the increase in the real impedance (Zre), with PU7 having higher impedance which is attributed to greater corrosion resistance [29]. The presence of PET in the PU coatings could enhance the properties of the coatings for surface corrosion protection and control.…”

Section: Thermal Properties Of the Pu Coatingsmentioning

confidence: 93%

Thermal and anticorrosion properties of polyurethane coatings derived from recycled polyethylene terephthalate and palm olein-based polyols

2021

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Polyols of palm olein/polyethylene terephthalate (PET) were synthesized by means of incorporating recycled PET from waste drinking bottles in different proportions into palm olein alkyd in the presence of ethylene glycol. The polyols were characterized by FTIR, and theirs hydroxyl value (OHV), acid value (AV) and viscosity were determined. The formulation of the polyurethane coating was carried out by dissolving the polyol in mixed solvent of cyclohexanone/tetrahydrofuran (THF) (4 : 1) followed by reacting 1 hydroxyl equivalent of the polyol with 1.2 equivalents of methylene diphenyldiisocyanate and 0.05% dibutyltin dilaurate (DBTDL) catalyst. The coating cured through the cross-linking reactions between hydroxyl and isocyanate groups. The formation of urethane linkages was established by FTIR spectroscopy. The set films were characterized by thermal analysis. To study their anticorrosion properties, polarization measurements and EIS in 3.5% NaCl solution were determined. The coatings displayed good thermal stability and anticorrosion properties which were supported by XRD analysis. The PU7 coating, with the highest proportion of PET (up to 15% w/w), displayed significantly improved thermal stability and anticorrosion properties. It is evident that the performance of the polyurethane (PU) coatings could be enhanced by the incorporation of PET.

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Corrosion protection of AISI 1018 steel using Co-doped TiO 2 /polypyrrole nanocomposites in 3.5% NaCl solution

Cited by 44 publications

References 45 publications

Corrosion effect of 20 % NaCl solution on basic carbon structural S235JR steel

Corrosion effect of 20 % NaCl solution on basic carbon structural S235JR steel

Polypyrrole/Metal Oxides-Based Composites/Nanocomposites for Corrosion Protection

Thermal and anticorrosion properties of polyurethane coatings derived from recycled polyethylene terephthalate and palm olein-based polyols

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