scholarly journals Effect of Cu2+ on Corrosion Behavior of A106B Carbon Steel and 304L Stainless Steels in Seawater

Scanning ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Kewei Fang ◽  
Chengtao Li ◽  
Shuai Dong ◽  
Dubao Zhang ◽  
Xiangfeng Wu ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Stainless Steels ◽  
Potentiodynamic Polarization ◽  
Corrosion Potential ◽  
Immersion Test ◽  
304L Stainless Steel ◽  
Passive Region ◽  
Potentiodynamic Polarization Test ◽  
Polarization Test ◽  
Corrosion Behaviors

The corrosion behaviors of A106B carbon steel and 304L stainless steel (SS) in seawater with different Cu2+ concentrations were studied by the immersion test and the potentiodynamic polarization test. The results showed that with the increasing Cu2+ concentration, the mass lot rates of A106B and 304L SS all increased in the immersion test, and compared with A106B, the mass lot rates of 304L SS were all smaller. In the potentiodynamic polarization test, following the concentration of Cu2+ increased, the corrosion potential of A106B firstly shifted negatively; then, when Cu2+ increased to 100 ppm, the polarization curve moved to the upper right direction; namely, both the corrosion potential and corrosion electrical density increased. The corrosion potential of 304L SS increased with the increasing Cu2+, and the passive region was reduced; the pitting sensitivity improved.

Influence of Organic Sealed on the Corrosion Behaviors of Micro Arc Oxidation Coated ZM5 Magnesium Alloy

2011 ◽  
Vol 418-420 ◽  
pp. 844-847 ◽  
Author(s):  
Jian Jun Xi ◽  
Jun Zhao
Keyword(s):  
Magnesium Alloy ◽  
Potentiodynamic Polarization ◽  
Corrosion Performance ◽  
Organic Solution ◽  
Potentiodynamic Polarization Test ◽  
Polarization Test ◽  
Micro Arc Oxidation ◽  
Corrosion Behaviors

An attempt was made to produce organic sealed micro arc oxidation coatings on ZM5 magnesium alloy using two different kinds of organic solution which are acrylics and PTFE. The thickness, potentiodynamic polarization test, corrosion weight lost and morphologies of the coatings were investigated. The results indicate that PTFE sealed micro arc oxidation coatings has relatively dense and uniform surface to show the best anti-corrosion performance.

Corrosion behaviors of iron, chromium, nickel, low-carbon steel and four types of stainless steels in liquid antimony-tin alloy

CORROSION ◽  
10.5006/3820 ◽  
2021 ◽  
Author(s):  
Wei Liu ◽  
Huayi Yin ◽  
Kaifa Du ◽  
Bing Yang ◽  
Dihua Wang
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Stainless Steels ◽  
Liquid Metals ◽  
Low Carbon Steel ◽  
Solid Substrate ◽  
Low Carbon ◽  
Corrosion Resistant ◽  
Corrosion Behaviors ◽  
Iron Chromium

Corrosion-resistant metals and alloys towards liquid metals determine the service performances and lifetime of the devices employing liquid metals. This paper studies the static corrosion behaviors of iron, chromium, nickel, low carbon steel, and four types of stainless steels (SS410, SS430, SS304, SS316L) in liquid Sb-Sn at 500 oC, aiming to screen corrosion-resistant SS for Li||Sb-Sn liquid metal batteries (LMBs). The corrosion rates of Fe and Ni are 0.94 μm h-1 and 6.03 μm h-1 after 160 h’s measurement, respectively. Cr shows a low corrosion rate of < 0.05μm h-1, which is due to the formation of a relatively stable Cr-Sb layer that may be able to prevent the interdiffusion between the solid substrate and liquid Sb-Sn. Ni has a high corrosion rate because the formed Ni-Sb and Ni-Sn compounds are soluble in the liquid Sb-Sn. The corrosion products of both pure metals and SS can be predicted by thermodynamic and phase diagram analysis. Among the four types of SS, SS430 shows the best corrosion resistance towards liquid Sb-Sb with a corrosion rate of 0.19 μm h-1. Therefore, a liquid Sb-Sn resistant material should have a high Cr content and a low Ni content, and this principle is applicable to design metallic materials not only for LMBs but also for other devices employing liquid Sb- and Sn-containing liquid metals.

scholarly journals Effects Of Anodic Protection On SCC Behavior Of X80 Pipeline Steel In High-pH Carbonate-Bicarbonate Solution

2015 ◽  
Vol 60 (2) ◽  
pp. 1009-1013 ◽  
Author(s):  
W. Zhao ◽  
Y. Zou ◽  
D.X. Xia ◽  
Z.D. Zou
Keyword(s):  
Tensile Strength ◽  
Potentiodynamic Polarization ◽  
Pipeline Steel ◽  
Tensile Tests ◽  
Passive Region ◽  
X80 Pipeline Steel ◽  
Anodic Protection ◽  
Polarization Test ◽  
Protection Potential ◽  
Stable Passive

AbstractThe potentiodynamic polarization test and slow strain rate tensile tests of X80 pipeline steel were performed in 0.5M Na2CO3-1M NaHCO3solution to study the electrochemical and stress corrosion cracking properties. The results of potentiodynamic polarization test show that there is an obvious stable passive region, about from 0v to 0.8V (SCE), indicating that anodic protection is feasible. The results of slow strain rate tensile tests show that the stress corrosion cracking sensibility is high and cathodic protection effect is restricted due to the hydrogen permeation. However, the elongation, yielding strength and tensile strength all increase with anodic protection. The higher anodic protection potential in the stable passive region is benefit to improve tensile strength and yielding strength. However, the higher elongation is obtained at 0.5V (SCE) anodic protection potential.

Electrochemical Properties of UFG CP-Ti in Ringer’s Solution

2010 ◽  
Vol 667-669 ◽  
pp. 1083-1088
Author(s):  
Hong Jiang ◽  
Chao Ying Xie
Keyword(s):  
Electrochemical Properties ◽  
Potentiodynamic Polarization ◽  
Electrochemical Techniques ◽  
Coarse Grain ◽  
Corrosion Properties ◽  
Ringer’S Solution ◽  
Potentiodynamic Polarization Test ◽  
Polarization Test ◽  
Cp Ti ◽  
Scanning Electron

The effect of ECAE pass number on the electrochemical properties of CP-Ti was investigated by electrochemical techniques (potentiodynamic polarization test, potentiodynamic polarization test and surface analyses (OM, scanning electron microscopy (SEM) in Ringer’s solution at 37°C. The results show that the corrosion resistance of muli-pass ECAE CP-Ti samples is superior to the coarse grain CP-Ti. The effect of texture of ECAEed samples parallel to the surface on the corrosion properties has been discussed.

Corrosion behaviors of steels under supercritical CO2 conditions

2015 ◽  
Vol 33 (3-4) ◽  
pp. 151-174 ◽  
Author(s):  
Liang Wei ◽  
Yucheng Zhang ◽  
Xiaolu Pang ◽  
Kewei Gao
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Stainless Steels ◽  
Steel Corrosion ◽  
Carbon Steels ◽  
Corrosion Mechanism ◽  
Electrochemical Behaviors ◽  
Structure Morphology ◽  
Corrosion Behaviors ◽  
Corrosion Scales

AbstractCarbon dioxide (CO2) corrosion at low partial pressure has been widely recognized, but research on supercritical CO2 (SC CO2) corrosion is very limited. By far, investigations on steel corrosion under SC CO2 conditions have mainly focused on the corrosion rate, structure, morphology, and composition of the corrosion scales as well as the electrochemical behaviors. It was found in aqueous SC CO2 environment, that the corrosion rate of carbon steel was very high, and even stainless steels (13Cr and high-alloy CrNi steels) were subjected to some corrosion. Inhibitor could reduce the corrosion rate of carbon steels and stainless steels, but none of the tested inhibitors could reduce the corrosion rate of carbon steel to an acceptable value. Impurities such as O2, SO2, and NO2 and their mixtures in SC CO2 increased the corrosion rate of carbon steel. However, the existing studies so far were very limited on the corrosion mechanism of steels in SC CO2 conditions. Thus, this paper first reviews the finding on the corrosion behaviors of steels under SC CO2 conditions, points out the shortcomings in the present investigations and finally looks forward to the research prospects on SC CO2 corrosion.

scholarly journals Corrosion Resistance of Some Stainless Steels in Chloride Solutions

2017 ◽  
Vol 62 (2) ◽  
pp. 711-714
Author(s):  
D. Kasprzyk ◽  
B. Stypuła
Keyword(s):  
Corrosion Resistance ◽  
Pitting Corrosion ◽  
Stainless Steels ◽  
Potentiodynamic Polarization ◽  
Biomedical Application ◽  
Corrosion Behaviour ◽  
Immersion Test ◽  
Ringer Solution ◽  
Ferritic Stainless Steels ◽  
Chloride Solutions

AbstractThe present work compares corrosion behaviour of four types of S30403, S31603, S32615 austenitic and S32404 austenitic-ferritic stainless steels in chloride solutions (1%, 3% NaCl) and in Ringer solution, at 37°C temperature. Corrosion resistance was determined by potentiodynamic polarization measurements and a thirty day immersion test conducted in Ringer solution. The immersion test was performed in term of biomedical application. These alloy were spontaneously passivated in all electrolytes, wherein S30403, S31603 and S32404 undergo pitting corrosion. Only S32615 containing 5.5% Si shows resistance to pitting corrosion.

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