A novel observation of the interaction between the macroelastic stress and electrochemical corrosion of low carbon steel in 3.5wt% NaCl solution

2012 ◽  
Vol 85 ◽  
pp. 283-294 ◽  
Author(s):  
R.K. Ren ◽  
S. Zhang ◽  
X.L. Pang ◽  
K.W. Gao
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Electrochemical Corrosion ◽  
Low Carbon ◽  
Nacl Solution

Effect of Nanoparticle Addition in Hybrid Sol-Gel Silane Coating on Corrosion Resistance of Low Carbon Steel

2013 ◽  
Vol 686 ◽  
pp. 244-249 ◽  
Author(s):  
Poovarasi Balan ◽  
Aaron Ng ◽  
Chee Beng Siang ◽  
R.K. Singh Raman ◽  
Eng Seng Chan
Keyword(s):  
Corrosion Resistance ◽  
Carbon Steel ◽  
Electrochemical Impedance ◽  
Sol Gel ◽  
Low Carbon Steel ◽  
Electrochemical Corrosion ◽  
Alumina Nanoparticles ◽  
Low Carbon ◽  
Silane Coating ◽  
Sol Gel Films

Chromium pre-treatments of metal have been replaced by silane pre-treatments as more environmental friendly option. Nanoparticles can be added in the silane sol-gel network have been reported to improve corrosion resistance. In this work, the electrochemical corrosion resistance of low carbon steel coated with hybrid organic-inorganic sol-gel film filled with nanoparticles was evaluated. The sol-gel films have been synthesized from 3-glycidoxy-propyl-trimethoxy-silane (3-GPTMS) and tetra-ethyl-ortho-silicate (TEOS) precursors. These films have been impregnated with 300 ppm of silica or alumina nanoparticles. The electrochemical behavior of the coated steel was evaluated by means of electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Equivalent circuit modeling, used for quantifying the EIS measurements showed that sol-gel films containing silica nanoparticles improved the barrier properties of the silane coating. The silica nanoparticle-containing films showed highest initial pore resistance over the five days of immersion in 0.05M NaCl.

scholarly journals Research of the influence of boron microallegation on the corrosion behavior of a low-carbon structural steel in various structural condition

2019 ◽  
pp. 143-155
Author(s):  
V.G. Razdobreev
Keyword(s):  
Corrosion Resistance ◽  
Carbon Steel ◽  
Atmospheric Corrosion ◽  
Low Carbon Steel ◽  
Structural Condition ◽  
Structural Features ◽  
Low Carbon ◽  
Nacl Solution ◽  
Hot Rolled ◽  
Quenching And Tempering

The aim of the work is to study the effect of boron, structural features of the rolled steel of low-carbon steel in hot rolled and thermally hardened states on its corrosion resistance. Investigation of the corrosion resistance of hot-rolled and thermally hardened (quenching and tempering at temperatures of 200-600 jC) low-carbon steel St3sp containing 0.007% B and having no boron additives was carried out on polished samples with constant immersion in room temperature acidic medium, causing corrosion with hydrogen depolarization (1 N solution of H2SO4), and with variable immersion in aggressive media, causing corrosion with oxygen depolarization (in a 3 % NaCl solution). It was found that the atmospheric corrosion rate of hot-rolled low-carbon steel with and without boron is almost the same. It was experimentally established that samples of boron-containing steel (0.007 % B), when tested in a 1 N solution of H2SO4 and when immersed in a 3 % NaCl solution in a thermally hardened state, have a lower corrosion resistance than steel without boron: the maximum corrosion losses were samples hardened and tempered at a temperature of 300 оC. As shown by studies of microstructures using an electron microscope, when tempering 300 оC, hardened boron-containing steel is released, many relatively small inclusions of boron are released that contribute to the so-called structural corrosion. These finely divided inclusions, most of which are identified as Fe2B, are released from the supersaturated solid solution upon cooling and sharply reduce the resistance of steel to atmospheric corrosion. Thus, improving the hardenability of low-carbon steel, boron significantly reduces its corrosion resistance in aggressive environments after quenching and tempering.

Effect of a New Organic Inhibitor for Carbon Steel in Salt Solution

2013 ◽  
Vol 420 ◽  
pp. 215-221
Author(s):  
Khadim Finteel Al-Sultani ◽  
F.A. Al-Seroury ◽  
Abbas Abdulsada Shaymaa
Keyword(s):  
Carbon Steel ◽  
Nuclear Power ◽  
Low Carbon Steel ◽  
Protective Layer ◽  
Low Carbon ◽  
Nacl Solution ◽  
Processing Petroleum ◽  
Marine Applications ◽  
Weight Decrease ◽  
Organic Inhibitor

Carbon steel, the most widely used engineering material, despite its relatively limited corrosion resistance used in large tonnages in marine applications, nuclear power transportation, chemical processing , petroleum production and refining, pipelines, mining, construction and metal-processing equipment. The main objective of the present work involved the study of the inhibitive properties of natural product as spearmint plant extract as a safety and an environmentally friendly corrosion inhibitor for low carbon steel in (3.5% NaCl) solution. Results showed when the immersion model in (3.5% NaCl) solution that contains the inhibitor with concentration of (15% in volume), it's getting decrease in lost weight , indicating a layer of adequate oxide on the surface of steel, indicating that the amount of loss weight decrease with increasing concentration of inhibitor and this shows the damper on his ability to form a protective layer .

Development of Poly(aniline-co-o-toluidine)/TiO2 nanocomposite coatings for low carbon steel corrosion in 3.5% NaCl solution

2018 ◽  
Vol 32 (23) ◽  
pp. 2552-2568 ◽  
Author(s):  
Jeenat Aslam ◽  
Irfan Hussain Lone ◽  
Nagi Radwan ◽  
Mohammad Mobin ◽  
Saman Zehra ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Steel Corrosion ◽  
Nanocomposite Coatings ◽  
Low Carbon ◽  
Nacl Solution ◽  
Poly Aniline
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