scholarly journals NEW CORROSION INHIBITORS BASED ON AMINES AND AMIDES

Globus ◽  
2021 ◽  
Vol 7 (7(64)) ◽  
pp. 41-44
Author(s):  
Alfiya Kurbanbaevna Oserbaeva ◽  
Shavkat Payzievich Nurullaev ◽  
Davron Mavlon o’gl Rashidov ◽  
Ranoxon Islomidin kizi Kurbanova
Keyword(s):  
Sulfuric Acid ◽  
Physicochemical Properties ◽  
Corrosion Inhibitors ◽  
Metal Corrosion ◽  
Organic Substances ◽  
Inhibitor Concentration ◽  
Acid Media ◽  
Salt Deposition ◽  
Organic Inhibitors

In this work, new inhibitors of metal corrosion in sulfuric acid media are investigated depending on the duration of the process, inhibitor concentration and temperature. The main parameters of the synthesis of new corrosion inhibitors for metals of grade St.3 and St.12 with the use of amine and amide-containing organic substances have been determined, and methods for preparing these inhibitors have been described. The physicochemical properties of amine and amide containing organic inhibitors of corrosion and salt deposition in acidic process media have been studied.

Effect of Organic Corrosion Inhibitors on Corrosion Fatigue

CORROSION ◽  
1967 ◽  
Vol 23 (3) ◽  
pp. 65-71 ◽  
Author(s):  
PARVIZ MEHDIZADEH ◽  
R. L. McGLASSON ◽  
J. E. LANDERS
Keyword(s):  
Corrosion Fatigue ◽  
Diesel Fuel ◽  
Corrosion Inhibitors ◽  
Fatigue Cracks ◽  
Material Surface ◽  
Significant Protection ◽  
Inhibitor Concentration ◽  
Degree Of Protection ◽  
Organic Inhibitors ◽  
Organic Corrosion Inhibitors

Abstract The effect of organic inhibitors on corrosion fatigue performance of steel in a mixture of brine containing H2S-CO2 and diesel fuel is reported. The inhibitor concentration required to give significant protection to steel under corrosion fatigue conditions is much higher than that for corrosion control. This is due to the fact that corrosion fatigue cracks initiated at incompletely protected spots on the material surface influence fatigue failure regardless of the degree of protection achieved on neighboring areas. Effects of fatigue stress and concentration of corrosion inhibitors were investigated. Results were analyzed in terms of the proposed mechanism for corrosion inhibition in these environments.

Organic inhibitors of steel corrosion (analytical review of publications)

2020 ◽  
Vol 25 (2) ◽  
pp. 60-65
Author(s):  
S.A. Teryusheva
Keyword(s):  
Organic Compounds ◽  
Metal Surface ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Metal Corrosion ◽  
Structure Of Molecules ◽  
Other Substances ◽  
Analytical Review ◽  
Organic Inhibitors ◽  
General Stage

Analysis of publications is presented on studies of organic steel corrosion inhibitors in environments with hydrogen sulfide with the participation of microorganisms. A relationship is identified between the structure of organic compounds and the composition of their molecules and their efficiency in inhibition of steel corrosion. The effect of organic compounds (phenols, ketones, and quinones) on the metal corrosion process is discussed. A decrease in the rate of cathodic or anodic processes is studied, as dependent on the structure of molecules of organic compounds and pH of the medium. The choice of inhibitors for suppression of corrosion with participation of microorganisms is considered with account for the specificity of their action on a given microorganism and duration of their inhibiting properties: they must not be activated by other substances in the medium, the microorganism must not develop resistance. The mechanism of action of the inhibitor depends on the composition of its molecules, the nature of the corrosive medium and metal. The general stage is the adsorption of its molecules on the metal, depending, in the first instance, on its electronic structure that determines the possibility of chemisorption on the metal surface, as well as on the charge of the metal surface and particles of organic compounds acting as corrosion inhibitors.

Properties of CMV cation exchange membranes in sulfuric acid media

2006 ◽  
Vol 284 (1-2) ◽  
pp. 67-78 ◽  
Author(s):  
Le Xuan Tuan ◽  
M. Verbanck ◽  
C. Buess-Herman ◽  
H.D. Hurwitz
Keyword(s):  
Sulfuric Acid ◽  
Cation Exchange ◽  
Acid Media

Performance of Corrosion Inhibitors at High CO2 Pressures

2008 ◽  
Author(s):  
Patchareeporn Sintoorahat ◽  
Aree Wairatpanich ◽  
Suchada Chimam ◽  
Dayin Mongkholkhajornsilp ◽  
Cheolho Kang
Keyword(s):  
Corrosion Inhibitors ◽  
Liquid Velocity ◽  
Flow Characteristics ◽  
Stratified Flow ◽  
Inhibitor Concentration ◽  
Flow Loop ◽  
Corrosion Rates ◽  
Offshore Pipeline ◽  
Carbon Dioxide Pressure ◽  
Corrosion Rate Measurement

The objective of this study was to evaluate the performance of two corrosion inhibitors (CI-A and CI-B) under conditions similar to the second PTT’s offshore pipeline. The experiments were carried out in flow-loop system, 36 m long, 10.16 cm diameter at 10.5 and 14 bar of carbon dioxide pressure, a temperature at 50°C. The performances of corrosion inhibitors were examined under conditions of superficial liquid velocity of 0.03 m/s and gas velocities of 6, 8 and 10 m/s in 0 and 3 degree inclinations using the ER probe and X65 weight-loss coupons for corrosion rate measurement at the top and bottom of pipe. According to flow characteristics, it was found that the smooth and wavy stratified flow occurred in 0 degree. For 3 degree inclination, wavy stratified flow with big waves was dominantly presented for all conditions. Corrosion inhibitor B showed a better performance than inhibitor A in all cases. For inhibitor B, the target corrosion rates of less than 0.1 mm/yr were achieved in all conditions with 50 ppm of inhibitor concentration whereas the amount of 75 ppm inhibitor concentration was required for CI-A. The color, turbidity, and emulsion tendency with corrosion inhibitors will be also discussed in this paper.

Novel Chromium-Free Technologies for the Prevention of Wet Stack Corrosion on Hot Dipped Metallic Coatings: A Review

CORROSION ◽  
10.5006/2772 ◽  
2018 ◽  
Vol 74 (8) ◽  
pp. 918-935
Author(s):  
Thomas Jurak ◽  
Sina Jamali ◽  
Yue Zhao ◽  
Joe Williams ◽  
Abhishek Saxena ◽  
...  
Keyword(s):  
Atmospheric Corrosion ◽  
Corrosion Inhibitors ◽  
Steel Strip ◽  
Sol Gel ◽  
Earth Metal ◽  
Ultra Violet ◽  
Metal Corrosion ◽  
Metallic Coatings ◽  
Ultra Violet Radiation ◽  
Smart Coatings

Advances in novel corrosion prevention technologies, including organic-inorganic hybrid sol-gel coatings, ultra violet radiation curable coatings, rare earth metal corrosion inhibitors, and other additions for the fabrication of smart coatings, and their potential application to hot dipped metallic coated steel strip products have been reviewed. Rather than exploring the prevention of atmospheric corrosion as in similar publications in the field, the authors have instead placed emphasis on the feasibility of the technologies for protection against “wet stack corrosion,” also known as wet storage staining. Such corrosion of hot dipped metallic coatings is a common problem in industry, but one rarely explored in academia.

scholarly journals Ethanolamines as Corrosion Inhibitors for Zinc in (HNO3+H2SO4) Binary Acid Mixture

2010 ◽  
Vol 7 (2) ◽  
pp. 665-668 ◽  
Author(s):  
R. T. Vashi ◽  
H. M. Bhajiwala ◽  
S. A. Desai
Keyword(s):  
Corrosion Rate ◽  
Acid Concentration ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Corrosion Behaviour ◽  
Acid Mixture ◽  
Inhibitor Concentration

This work deals with the study of corrosion behaviour for zinc in (HNO3+ H2SO4) binary acid mixture containing ethanolamines. Corrosion rate increases with concentration of acid and temperature. At constant acid concentration, the inhibition efficiency of ethanolamines increases with the inhibitor concentration. Value of ΔGa increases and inhibition decreases with temperature. The mode of inhibition action appears to be chemisorption.

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