scholarly journals Coconut Water as Organic Inhibitor on Corrosion of Low Carbon Steel in 3.5% NaCl Solution

2021 ◽  
Vol 7 (2) ◽  
pp. 145
Author(s):  
Ramang Magga ◽  
Muhammad Zuchry ◽  
Yusnaini Arifin
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Water Concentration ◽  
Immersion Test ◽  
Coconut Water ◽  
Low Carbon ◽  
Weight Loss Method ◽  
Loss Method ◽  
Organic Inhibitor

Investigating coconut water as inhibitors to protect low-carbon steel from corrosion in 3.5% NaCl has been studied by weight loss method. The weight loss of steel was identified by immersion test. The coconut water used was young and old coconut water. The concentration of coconut water, whether young and old, in 3.5% NaCl was varied. The results showed that the corrosion rate of steel decreased with increasing coconut water concentration. Furthermore, old coconut water can further reduce the rate of corrosion in mild steel comparing young coconut water.

PENGARUH BASIC SEDIMENT AND WATER TERHADAP LAJU KOROSI PIPA X52 DAN A53 PADA MEDIA OIL SLUDGE.

ROTOR ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 13
Author(s):  
Naufan Arviansyah ◽  
Sumarji Sumarji ◽  
Digdo Listyadi Setyawan
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Low Carbon Steel ◽  
Measuring Method ◽  
Oil Sludge ◽  
Uniform Corrosion ◽  
Low Carbon ◽  
Weight Loss Method ◽  
Loss Method

This research have a purpuse to know corrosion rate in pipe X52 and A53 at oil sludge media caused BS and W. Corrosion is a damage of metal that occurs because reaction between metal with environtment and produce unwanted of corrosion product. Pipe X52 and A53 is a type of low carbon steel that use for fluid transportation system in industry. Oil sludge is a sediment of crude oil from main gathering storage and containing variouses elements. Oil sludge have a one of element is Basic Sediment and Water that is can make corrosion happen to distribution pipes. Measuring Method used in this research is weight loss method. The result of corrosion rate in Oil Sludge media containing 30,17% BS and W for pipe A53 is 1,64 x 10-2 mmpy and the result for pipa X52 is 2,47 x 10-2 mmpy. The result of corrosion rate in Oil Sludge media containing 60,67% BS and W for pipe A53 is 2,12 x 10-2 mmpy and for pipe X52 the result is 3,13 x 10-2 mmpy. The result of this research showed pipe A53 have more resistance than pipe X52. The corrosion is classified as uniform corrosion. Keywords : A53, Weight Loss, Oil Sludge, X52.

Studies on Cationic Property of Quaternary Polyethyleneimine

2011 ◽  
Vol 689 ◽  
pp. 432-439 ◽  
Author(s):  
Xin Zhang ◽  
Xue Dong Wu ◽  
Bao Jiao Gao
Keyword(s):  
Carbon Steel ◽  
Ph Value ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Zeta Potentials ◽  
Adsorbed Films ◽  
Weight Loss Method ◽  
Loss Method ◽  
Ph Range ◽  
Surface Modified

In this paper, the inhibition efficiency of Quaternary Polyethyleneimine (QPEI) self-adsorbed films was studied by polarization curve and weight loss method. We made an intensive study of its anticorrosion mechanism for low carbon steel in different acid baths using Polyethyleneimine(PEI) and QPEI as inhibitor, respectively. Diatomite particles were surface-modified with PEI and QPEI, respectively, and their zeta potentials were measured. The morphologies and compositions of the polymer film on the steel surface were examined with the aids of SEM and XPS, respectively. Compared with PEI, the cationic property is stronger, and it is not influenced by the PH value of mediums. The zeta potential of diatomite particles surface-modified with QPEI remains higher positive in whole PH range. The above facts enough confirm that anticorrosion mechanism of QPEI for low carbon steel attributes to its possessing outstanding cationic property.

Determining the Corrosivity of Atmospheres, through the Weight Loss Method, According to ISO 9223

2012 ◽  
Vol 433-440 ◽  
pp. 975-982 ◽  
Author(s):  
B.Y.R. Surnam ◽  
C.V. Oleti
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Medium Carbon Steel ◽  
Environmental Data ◽  
Low Carbon ◽  
Reliable Determination ◽  
Medium Carbon ◽  
Corrosion Loss ◽  
Weight Loss Method ◽  
Loss Method

ISO 9223 can be used to categorize the corrosivity of atmospheres through either corrosion loss measurements or the use of environmental data. Although both methods are expected to give the same result, discrepancies have been found to occur. The present paper analyses this aspect of ISO 9223, focusing on the effects of metal composition, when using carbon steel, in corrosivity categorisation. Low and medium carbon steel were, therefore, exposed outdoors at one site in Mauritius to determine its atmospheric corrosivity. It was found that for medium carbon steel, the corrosivity obtained from corrosion loss results, through the weight loss method, was not in conformance with that obtained through the environmental data. This was not the case with low carbon steel. Taking into consideration the various factors affecting atmospheric corrosion, it was concluded that the carbon content of carbon steel is an important parameter that should be considered in ISO 9223 for more reliable determination of the corrosivity of atmospheres.

scholarly journals Microbial Corrosion of API 5L X-70 Carbon Steel by ATCC 7757 and Consortium of Sulfate-Reducing Bacteria

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Arman Abdullah ◽  
Nordin Yahaya ◽  
Norhazilan Md Noor ◽  
Rosilawati Mohd Rasol
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Sulfate Reducing Bacteria ◽  
Desulfovibrio Vulgaris ◽  
Corrosion Morphology ◽  
Sulfate Reducing ◽  
Weight Loss Method ◽  
Loss Method ◽  
Reducing Bacteria

Various cases of accidents involving microbiology influenced corrosion (MIC) were reported by the oil and gas industry. Sulfate reducing bacteria (SRB) have always been linked to MIC mechanisms as one of the major causes of localized corrosion problems. In this study, SRB colonies were isolated from the soil in suspected areas near the natural gas transmission pipeline in Malaysia. The effects of ATCC 7757 and consortium of isolated SRB upon corrosion on API 5L X-70 carbon steel coupon were investigated using a weight loss method, an open circuit potential method (OCP), and a potentiodynamic polarization curves method in anaerobic conditions. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were then used to determine the corrosion morphology in verifying the SRB activity and corrosion products formation. Results from the study show that the corrosion rate (CR) of weight loss method for the isolated SRB is recorded as 0.2017 mm/yr compared to 0.2530 mm/yr for ATCC 7757. The Tafel plot recorded the corrosion rate of 0.3290 mm/yr for Sg. Ular SRB and 0.2500 mm/yr forDesulfovibrio vulgaris. The results showed that the consortia of isolated SRB were of comparable effects and features with the single ATCC 7757 strain.

scholarly journals Synthesis of Water Soluble Chitosan Inhibitor from Shrimp Shells and its Corrosion Rate on Mild Steel in Acidic Solution

2021 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Nur Layli Amanah ◽  
Ika Dyah Widharyanti ◽  
Agung Nugroho
Keyword(s):  
Corrosion Rate ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Water Soluble ◽  
Low Carbon ◽  
Shrimp Shell ◽  
Weight Loss Method ◽  
Shrimp Shell Waste ◽  
Loss Method ◽  
Increasing Temperature

<span>Synthesis of WSCI (Water Soluble Chitosan Inhibitor) </span><span>from shrimp shell waste is carried out through demineralization, deproteination, and deacetylation processes. WSCI is obtained from monomer termination and H<sub>2</sub>O<sub>2</sub> assistance. WSCI was characterized using Fourier Transform Infrared Spectroscopy (FTIR) and the degree of deacetylation was determined using the baseline method. The effect of adding WSCI to low carbon steel SS400 with a 1 M HCl corrosive environment was studied using the weight loss method at various concentrations and temperatures. The overall results of the research show that WSCI synthesis used in the prevention of corrosion have an inhibition efficiency of up to 74.6% at a concentration of 200 ppm at a temperature of 28<sup>o</sup>C. Inhibition efficiency and corrosion rate are known to increase with increasing WSCI concentration and corrosion rate decreasing with increasing temperature.</span>

scholarly journals Study on Deterioration Characteristics of Low-Carbon Steel’s Mechanical Properties and Fracture Mechanism under Marine Engineering Environment

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Lili Cao ◽  
Ming Li ◽  
Jiazhi Zhang ◽  
Gang Lin ◽  
Baichuan Gong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Carbon Steel ◽  
Sea Water ◽  
Mechanical Test ◽  
Low Carbon Steel ◽  
Water Concentration ◽  
Low Carbon ◽  
Engineering Environment ◽  
Marine Engineering

In order to study the mechanical properties of low-carbon steel under the coupling effect of the overall environment and the loads, the tensile mechanical test was carried out. The results indicated that, as the sea water concentration and tensile deterioration increased, both the mass-loss rate and surface roughness of the low-carbon steel gradually increased, and the yield strength, tensile strength, elongation, and section shrinkage decreased gradually. The mechanical parameters of the low-carbon steel were affected by the joint actions of the sea water concentration and tensile deterioration. The established mechanical model of low-carbon steel under the marine engineering environment shows that tensile deterioration had no effects on the fracture toughness, while the increase of sea water concentration could reduce the fracture toughness remarkably.

The Effect of Flue Gas Environment on the Corrosion Behavior of the Sulfuric Acid Dew-Point Corrosion Resistant Steel

2018 ◽  
Vol 941 ◽  
pp. 1705-1709
Author(s):  
Byoung Ho Lee ◽  
Min Ho Jo ◽  
Yun Ha Yoo
Keyword(s):  
Corrosion Resistance ◽  
Sulfuric Acid ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Immersion Test ◽  
Dew Point ◽  
Corrosion Resistant Steel ◽  
Resistant Steel ◽  
Low Carbon ◽  
Corrosion Resistant

In order to compare the corrosion resistance of conventional low carbon steel, Cu containing low carbon steel for sulfuric acid dew-point corrosion inhibition, and stainless 409L, immersion tests were carried out in 50 wt.% sulfuric acid. The effects of HCl concentraion on the corrosion behavior in a fixed sulfuric acid concentration (16.9 vol.%) was also investigated by immersion test. In addition to immersion test, field test in a thermal plant was carried out for 10 months. As a result, it was confirmed that Cu-containing dew-point corrosion resistent steel has the highest corrosion resistance compared with other materials. To verify superior corrosion resistence of dew-point corrosion resistant steel, surface morpology after various test was observed by SEM. It was found that surface corroded product of the dew-point corrosion resistant steel was much denser and thicker compared with the other steel.

Inhibition of Corrosion of Carbon Steel by Resorcinol-Zn2+ System in Well Water

2015 ◽  
Vol 1 (2) ◽  
Author(s):  
Benita Sherine ◽  
A. Jamal Abdul Nasser ◽  
S. Rajendran
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Inhibition Efficiency ◽  
Well Water ◽  
Protective Film ◽  
Zinc Ions ◽  
Immersion Period ◽  
Afm Analysis ◽  
Weight Loss Method ◽  
Loss Method

The inhibition efficiencies of inhibitor systems constituting various combinations of resorcinol and zinc ions in controlling corrosion of carbon steel immersed in well water have been evaluated by weight loss method. 75 ppm of zinc has 36% inhibition efficiency (Immersion period =7 days). When 100 ppm of resorcinol is added, the IE increases to 96%. The nature of the protective film formed on the metal surface has been analyzed by FTIR spectra, SEM and AFM analysis. The protective film is found to consist of Fe2+ - resorcinol complex and Zn(OH)2.

scholarly journals Green approach towards corrosion inhibition of carbon steel in produced oilfield water using lemongrass extract

RSC Advances ◽  
2017 ◽  
Vol 7 (72) ◽  
pp. 45241-45251 ◽  
Author(s):  
M. A. Deyab ◽  
M. M. Osman ◽  
A. E. Elkholy ◽  
F. El-Taib Heakal
Keyword(s):  
Weight Loss ◽  
Electrochemical Impedance Spectroscopy ◽  
Carbon Steel ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Cymbopogon Citratus ◽  
Green Approach ◽  
Weight Loss Method ◽  
Loss Method ◽  
Oilfield Water

The anti-corrosion action of lemongrass (cymbopogon citratus) extract (LGE) was evaluated for carbon steel in produced oilfield water using weight loss method and electrochemical impedance spectroscopy (EIS).

scholarly journals Surface Protection of Carbon Steel by Hexanesulphonic Acid-Zinc Ion System

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
C. Mary Anbarasi ◽  
Susai Rajendran
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Metal Surface ◽  
Zinc Ion ◽  
Protective Film ◽  
Bivalent Cation ◽  
Surface Protection ◽  
Weight Loss Method ◽  
Loss Method ◽  
Ac Impedance Spectra

Inhibition of corrosion of carbon steel in dam water by hexanesulphonic acid as its sodium salt C6H13SO3Na (SHXS) in the absence and presence of a bivalent cation zinc ion (Zn2þ) has been investigated using weight loss method. Results of weight loss method indicate that inhibition efficiency (IE) increased with increase of inhibitor concentration. Polarization study reveals that SHXS-Zn2+ system controls the cathodic reaction predominantly. AC impedance spectra reveal that a protective film is formed on the metal surface. The nature of the metal surface has been analysed by Fourier Transform Infrared Spectroscopy (FTIR) and Atomic Force Microscopy (AFM).

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