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>

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.

scholarly journals Evaluation of Inhibitive Performance of Acidic Extract of Eichornia Crassipeson Corrosion of Low Carbon Steel in 1M Sulphuric Acid Solution

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Sidikat I Kuye ◽  
Emmanuel Amaechi ◽  
Nurudeen O Adekunle ◽  
Olayide R Adetunji ◽  
Alex F Adisa ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Acid Solution ◽  
Sulphuric Acid ◽  
Eichhornia Crassipes ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Gravimetric Method ◽  
Sulphuric Acid Solution ◽  
Low Carbon

Corrosion inhibition potential of Eichhornia crassipes extract on low carbon steel in 1 M sulphuric acid solution was investigated using gravimetric method and corrosion rate. The experiment was carried out for 3 hours at different concentration of Eichhornia crassipes extract and temperatures of 26.6°C, 40°C and 60°C. Arrhenius and improved Arrhenius equations were used to determine the thermodynamics properties of the reaction while the nature of the reaction was proposed by adsorption isotherms. The results showed that corrosion rate decreased in the presence of the extract except in 60oC. Inhibition efficiency also increased with extract concentration with the highest (82%) occurring at room temperature and 5% concentration. Inhibition efficiency decreased with increase in temperature with almost no inhibition at 60oC, this is associated with physisorption. Activation energy () and activation enthalpy () both had positive values and they increased in the presence of Eichhornia crassipes extract, those for inhibited solution were higher than those for uninhibited solution, these can also be attributed to physisorption. Inhibition  reaction obeyed Langmuir adsorption isotherm. Gibbs free energy () calculated for the reaction is -8.509 to -11.767 kJ mol-1.

scholarly journals Application of Organic Inhibitors to the Corrosion of Materials AISI 1070 Steel

2021 ◽  
Vol 2 (1) ◽  
pp. 12-20
Author(s):  
Destri Muliastri ◽  
Devi Eka Septiyani ◽  
Naufal Afif ◽  
Vania Tingting Sirenden ◽  
Januar Nur Rohmah Suprihartini
Keyword(s):  
Weight Loss ◽  
Fourier Transform ◽  
Corrosion Rate ◽  
Leaf Extract ◽  
Inhibition Efficiency ◽  
H2so4 Solution ◽  
Weight Loss Method ◽  
Organic Inhibitors ◽  
Loss Method ◽  
Mango Leaves

AISI 1070 steel is a material that has corrosion when it reacts with the environment. One way to inhibit the corrosion rate is by using organic inhibitors. The organic inhibitors used mango leaves and mango rinds with variations in the concentration of organic inhibitors of 0%, 6%, and 8%, respectively. This study aimed to determine the effectiveness of mango leaf extract and mango rinds as an inhibitor against the corrosion rate of AISI 1070 Steel. The extraction was carried out using the Maceration Method. Fourier Transform Infrared (FTIR), Potenzyodinamic, and Weight Loss tests were carried out in this study.  FTIR results show that both mango rinds and mango leaf have ingredients that were able to inhibit the corrosion rate, such as flavonoid functional groups including C – H, C = O, and C – O. Using the weight-loss method, the best corrosion rate was found in the mango rinds extract with a concentration of 8 mL, which was 31.784 mm/year with an inhibition efficiency of 92%. The highest corrosion rate was in 2M H2SO4 solution using potentiodynamic, without a mixture of inhibitors, that is 0.15589478 mm/year.

scholarly journals PEMANFAATAN SAKARIN SEBAGAI ALTERNATIF PENGENDALI KOROSI BALING-BALING KAPAL

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Nani Mulyaningsih ◽  
Hadyan Hadyan
Keyword(s):  
Corrosion Rate ◽  
Sea Water ◽  
Low Carbon Steel ◽  
Raw Material ◽  
Metal Corrosion ◽  
Low Carbon ◽  
Fishing Vessels ◽  
Nickel Electroplating ◽  
Weight Loss Method ◽  
Electroplating Process

Corrosion is a metallic interaction with the environment that causes damage to the metal. Corrosion can also occur in fishing vessels, which are generally made of low carbon steel. This happens because the propeller works in a corrosive environment. Then the need for an alternative corrosion control so that the component is durable. The purpose of this study was to find out how much corrosion rate the ship propellers produced after the addition of saccharin on the nickel electroplating process. This study was conducted by specimen electroplating nickel with the addition of saccharin variation of (0.6 gram; 0.8 gram; and 1 gram). Then the results in corrosion test using sea water media. The corrosion rate is calculated using the weight loss method. After the calculated corrosion rate, then the effectiveness of saccharin is calculated. The results showed that nickel electroplating specimens with addition of 0.6 gram saccharin variation resulted in a corrosion rate of 75 mpy, 0.8 gram saccharin yielded a corrosion rate of 83.14 mpy, saccharin 1 gram of corrosion rate of 90.56 mpy, while raw material corrosion rate of 117.73 mpy.

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.

scholarly journals Protection of copper corrosion in acidic medium using pinostrobin

2018 ◽  
Vol 1 (2) ◽  
pp. 50
Author(s):  
Rosita Wati ◽  
Saprizal Hadisaputra ◽  
Dina Asnawati ◽  
Dhony Hermanto
Keyword(s):  
Weight Loss ◽  
Corrosion Rate ◽  
Acidic Medium ◽  
Inhibition Efficiency ◽  
Freundlich Isotherm ◽  
Copper Corrosion ◽  
Copper Surfaces ◽  
Weight Loss Method ◽  
Corrosion Inhibition Efficiency ◽  
Loss Method

The corrosion inhibition efficiency of copper was tested by the weight loss method in 1 M H2SO4 medium in the presence of pinostrobin as inhibitor. It shows that the addition of pinostrobin inhibitor reduce the corrosion rate. The nature of thermodynamic of pinostrobin adsorption on copper surfaces follows the Freundlich isotherm. The process of inhibition is endothermic, spontaneous and physisorption. It is proved by the Ea, ΔH and ΔS and ΔG values in which the thermodynamic studies show that the values of Ea < 80 kJ.mol-1, ∆H positive, ∆S positive, and ΔG < -20 kJ.mol-1.

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.

scholarly journals Synergistic and Antagonistic Effects of Sodium Molybdate-Zn2+System

2012 ◽  
Vol 9 (4) ◽  
pp. 1746-1752 ◽  
Author(s):  
J. Wilson Sahayaraj ◽  
A. John Amalraj ◽  
Susai Rajendran ◽  
N. Vijaya
Keyword(s):  
Aqueous Solution ◽  
Weight Loss ◽  
Inhibition Efficiency ◽  
Sodium Molybdate ◽  
Antagonistic Effect ◽  
Protective Film ◽  
Antagonistic Effects ◽  
Polarization Study ◽  
Weight Loss Method ◽  
Loss Method

The inhibition efficiency (IE) of sodium molybdate (SM) in controlling corrosion of carbon steel in an aqueous solution containing 120 ppm of Cl-, in the absence and presence of Zn2+has been evaluated by weight-loss method. A synergistic effect exists between SM and Zn2+when the concentration of Zn2+is 25 ppm and above. Inhibition efficiencies obtained are greater than 85%. Antagonistic effect exists between SM and Zn2+when the concentration of Zn2+is 10 ppm and below. The SM-Zn2+system shows excellent IE up to third day. Above third day IE decreases. Acceleration of corrosion takes place. Excellent IE is shown at pH 5,7 and 12. At pH 9, IE decreases since Zn2+is precipitated as Zn(OH)2in the bulk of the solution. Polarization study reveals that SM-Zn2+system functions as a mixed inhibitor. FTIR spectra reveal that the protective film consists of Fe2+-SM complex and Zn(OH)2.

Sulfurous Acid Corrosion of Low Carbon Steel at Ordinary Temperatures - I. Its Nature

CORROSION ◽  
1966 ◽  
Vol 22 (5) ◽  
pp. 143-146 ◽  
Author(s):  
W. McLEOD ◽  
R. R. ROGERS
Keyword(s):  
Water Vapor ◽  
Carbon Steel ◽  
Sulfur Dioxide ◽  
Corrosion Rate ◽  
Acid Corrosion ◽  
Low Carbon Steel ◽  
Rate Data ◽  
Low Carbon ◽  
Sulfurous Acid ◽  
Ordinary Temperature

Abstract Corrosion rate data are presented for low carbon steel in (1) a combination of sulfur dioxide, water vapor and air, and (2) aqueous solutions of sulfurous acid in the absence of air, at ordinary temperature. Information as to the nature of the corrosion products is presented and it is shown that this depends on the place in which the corrosion takes place to an important extent.

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 &lt; 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.

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