scholarly journals Evaluation of Some Organic Compounds Containing O, N and S Atoms as Corrosion Inhibitors for Stainless Steel 304 in Acid Solutions

2017 ◽  
pp. 5072-5091 ◽  
Author(s):  
A S. Fouda ◽  
Keyword(s):  
Stainless Steel ◽  
Organic Compounds ◽  
Corrosion Inhibitors ◽  
Acid Solutions ◽  
Stainless Steel 304

Improvement of resistance to corrosion of stainless steel 304 in acid solutions by simultaneous deposition with doping of Si using KrF excimer laser

1990 ◽  
Vol 5 (12) ◽  
pp. 2835-2840 ◽  
Author(s):  
Koji Sugioka ◽  
Hideo Tashiro ◽  
Koichi Toyoda ◽  
Hideyuki Murakami ◽  
Hiroshi Takai
Keyword(s):  
Stainless Steel ◽  
Laser Irradiation ◽  
Excimer Laser ◽  
Polarization Resistance ◽  
Cathodic Polarization ◽  
Acid Solutions ◽  
Stainless Steel 304 ◽  
Quantitative Verification ◽  
Excimer Laser Irradiation ◽  
Krf Excimer Laser

The chemical stability of the surface of stainless steel (SUS) 304 in acid immersion tests is greatly improved by the laser implant-deposition (LID) process, i.e., the simultaneous deposition and incorporation of silicon by KrF excimer laser irradiation. The etching depths of the treated samples in 1.32 N HCl solution are substantially zero at the laser irradiation conditions of more than 40 pulses and of more than 400 mJ/cm2 at the surface. By the quantitative verification of cathodic polarization in 1 N H2SO4, the highest polarization resistance is estimated to be 26.7 times that of the nontreated sample.

High-temperature corrosion of steels in acid solutions. Part 2. Inhibitor protection of steels by unsaturated organic compounds. Review

2020 ◽  
pp. 1-19
Author(s):  
Ya.G. Avdeev ◽  
◽  
Yu.I. Kuznetsov ◽  
Keyword(s):  
High Temperature ◽  
Organic Compounds ◽  
Corrosion Inhibitors ◽  
High Temperature Corrosion ◽  
Chemical Transformations ◽  
Acid Solutions ◽  
Slowing Down ◽  
Mineral Acids ◽  
Protective Polymer ◽  
Unique Mechanism

The general regularities of the influence of temperature (t) of acid solutions on the protection effectiveness of steel in them by organic compounds have been considered. The effectiveness of organic compounds in slowing down the corrosion of steels, as a rule, either decreases with increasing t or passes through a maximum at 60 °C. It was noted that there is a group of high-temperature corrosion inhibitors, the temperature maximum of which lies above 60 °C, that allows them to be used in the protection of steels even in environments with t > 100 °C. The general approaches to the protection of steels in solutions of mineral acids under conditions of high-temperature corrosion (t > 80 °C) with unsaturated organic compounds (UC) and mixtures based on them were analyzed. The use of multicomponent compound containing UC is appropriate for the protection of steels in high-temperature solutions of acids, in some cases at t up to 250 °C. The ability to protect steels at such high t is due to the unique mechanism of the UC inhibitory action, which is the result of their ability to chemisorption on the metal surface and undergo deep chemical transformations leading to the formation of a protective polymer film. Limitations on the use of UC as corrosion inhibitors are associated with their chemical instability in volume of acid, as well as toxicity of UC itself and composite additives used with them.

Organic corrosion inhibitors for aluminium and its alloys in acid solutions: a review

RSC Advances ◽  
2016 ◽  
Vol 6 (67) ◽  
pp. 62833-62857 ◽  
Author(s):  
Klodian Xhanari ◽  
Matjaž Finšgar
Keyword(s):  
Organic Compounds ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Acid Solutions ◽  
Acidic Solutions ◽  
Organic Corrosion Inhibitors

Corrosion inhibition of aluminium in acidic solutions using different organic compounds.

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