Steel Corrosion Inhibition by Microbial Polysaccharide and Tartrate Mixture

Korniy, S. А.; Zin, І. М.; Tymus, М. B.; Khlopyk, О. P.; Holovchuk, М. Ya.

doi:10.1007/s40735-021-00605-5

Cited by 13 publications

(5 citation statements)

References 22 publications

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“…New LCL samples based on sunflower oil (LCLs) and petroleum oil (LCLo) were used for grinding [1,8,53,54]. The chips were examined using the developed program [112]. The program is written in the Object Pascal programming language in the Delphi visual programming environment.…”

Section: Formulation Of the Problem: Materials And Methodologymentioning

confidence: 99%

Hydrogen Cooling of Turbo Aggregates and the Problem of Rotor Shafts Materials Degradation Evaluation

Balitskii,

Syrotyuk,

Havrilyuk

et al. 2023

Energies

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Changes in the properties of 38KhN3MFA steel, from which the rotor shaft is made, were investigated by comparing the hardness of the shaft surface and hydrogen concentration in the chips and analyzing changes in the morphology of the chips under the influence of various factors. The microstructures obtained from the surface of the rotor shaft samples are presented, and histograms reflecting the parameters of the structural components are constructed. An abbreviated diagram of the “life cycle” of the turbine rotor shaft is given. It was found that, during long-term operation (up to 250 thousand hours), the hardness of the rotor shaft surface decreases from 290 HB to 250 HB. It was recorded that, in the microstructure of the shaft during 250 thousand hours of operation, the amount of cementite decreased from 87% to 62%, and the proportion of free ferrite increased from 5% to 20%. The average values of ferrite microhardness decreased from 1.9 GPa to 1.5 GPa. An increase in the content of alloying elements in carbides was recorded: Cr and V—by 1.15–1.6 times; and Mo—by 2.2–2.8 times. With the help of the developed program (using computer vision methods), changes in their microrelief were detected to study photos of chips.

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Section: Formulation Of the Problem: Materials And Methodologymentioning

confidence: 99%

Hydrogen Cooling of Turbo Aggregates and the Problem of Rotor Shafts Materials Degradation Evaluation

Balitskii,

Syrotyuk,

Havrilyuk

et al. 2023

Energies

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“…Polymers may be a preferable alternative since they have long chain molecules and demonstrate good inhibitory efficiency in most hostile media at very low concentrations. [182][183][184] Carbohydrate polymers have long been employed as corrosion inhibitors because they are chemically stable, biodegradable, and environmentally benign macromolecules. [185] They are regarded as low-cost, renewable, and widely available alternatives that contain necessary and active chemicals that limit corrosion.…”

Section: Polysaccharidesmentioning

confidence: 99%

Corrosion inhibitors for carbon steel: A review

Desai,

Pawar,

Avhad

et al. 2022

Vietnam Journal of Chemistry

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Corrosion inhibitors are one of the practical and cost‐effective way of preventing and inhibiting corrosion. An inhibitor's primary function includes creating a barrier by forming one or more molecular layers to protect against corrosive attacks. Organic molecules are one of the most popular, efficient, and practical corrosion inhibitors, and all studies demonstrate that organic compounds, preferentially those containing nitrogen (N), sulphur (S), and oxygen (O), have high inhibitory efficiency. Also, corrosion inhibitors include inorganic compounds. Since inorganic and organic inhibitors are both toxic and expensive; emphasis is being placed on developing green corrosion inhibitors as well as on modification of inhibitors. We are focusing on carbon steel (CS) substrate in this review as it is the first‐line material and is widely employed in various industrial applications. Whereas corrosion resistance of CSs in acidic environments is a constantly evolving topic, working on better performance of CSs as more cost‐effective alternatives to other alloys.

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“…One of the widely used approaches to solve the problem is using inhibitors that form an adsorption layer on the surface, thereby blocking the penetration of active substances and reducing the corrosion rate. To overcome these shortcomings, it is proposed to combine natural anti-corrosion substances with biopolymer films or coatings [ 64 , 65 ]. For studying the process of destruction and degradation of metallic materials and thin films of vegetable and mineral oils, research based on electrochemical phenomena is conducted [ 66 , 67 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Technological Parameters of the Process of Forming Therapeutic Biopolymer Nanofilled Films

et al. 2022

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The prospects of using biopolymer nano-containing films for wound healing were substantiated. The main components of biopolymer composites are gelatin, polyvinyl alcohol, glycerin, lactic acid, distilled water, and zinc oxide (ZnO) nanoparticles (NPs). Biopolymer composites were produced according to various technological parameters using a mould with a chrome coating. The therapeutic properties of biopolymer films were evaluated by measuring the diameter of the protective effect. Physico-mechanical properties were studied: elasticity, vapour permeability, degradation time, and swelling. To study the influence of technological parameters of the formation process of therapeutic biopolymer nanofilled films on their therapeutic and physico-mechanical properties, the planning of the experiment was used. According to the results of the experiments, mathematical models of the second-order were built. The optimal values of technological parameters of the process are determined, which provide biopolymer nanofilled films with maximum healing ability (diameter of protective action) and sufficiently high physical and mechanical properties: elasticity, vapour permeability, degradation time and swelling. The research results showed that the healing properties of biopolymer films mainly depend on the content of ZnO NPs. Degradation of these biopolymer films provides dosed drug delivery to the affected area. The products of destruction are carbon dioxide, water, and a small amount of ZnO in the bound state, which indicates the environmental safety of the developed biopolymer film.

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Steel Corrosion Inhibition by Microbial Polysaccharide and Tartrate Mixture

Cited by 13 publications

References 22 publications

Hydrogen Cooling of Turbo Aggregates and the Problem of Rotor Shafts Materials Degradation Evaluation

Hydrogen Cooling of Turbo Aggregates and the Problem of Rotor Shafts Materials Degradation Evaluation

Corrosion inhibitors for carbon steel: A review

Optimization of Technological Parameters of the Process of Forming Therapeutic Biopolymer Nanofilled Films

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