Steel protection with chamber inhibitor IFKhAN-131

Goncharova, O. A.; Luchkin, A. Yu.; Andreeva, N. P.; Kasatkin, V. E.; Andreev, N. N.; Kuznetsov, Yuri A.

doi:10.31044/1813-7016-2021-0-9-18-31

Cited by 2 publications

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“…In accordance with [ 49 ], the R sl value in the equivalent circuit can serve as a criterion for estimating the blocking effect of the inhibitor. The coefficient of corrosion inhibition due to surface blocking ( γ sl ) is the ratio of resistance R sl of the sample after CT and after TT without a CIN.…”

Section: Resultsmentioning

confidence: 99%

Structuring of Surface Films Formed on Magnesium in Hot Chlorobenzotriazole Vapors

Goncharova

Luchkin²,

Senchikhin³

et al. 2022

Materials

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Chamberprotection of metals from atmospheric corrosion is a variety of vapor-phase inhibition. It is based on the effect of adsorption films formed in the vapors of low-volatile corrosion inhibitors at elevated temperatures. The paper analyzes the specific features of the chamber protection of a magnesium alloy with chlorobenzotriazole. It has been found that the protective properties of surface films formed in hot vapors of this compound increase upon exposure of the metal to air. The processes of structuring of protective films that occur in this case have been studied by a set of corrosion, electrochemical and physical methods. It has been shown that chamber treatment of the alloy is accompanied by chlorobenzotriazole adsorption and uniform thickening of the surface oxide-hydroxide layer. In this case, the corrosion processes slow down by a factor of up to 10. Prolonged exposure of the samples in air after the chamber treatment results in additional oxidation of magnesium and hydroxylation of the oxide. However, the oxide-hydroxide layer does not grow on the entire surface, but as separate islets. Such a change in the structure of the surface films results in an additional 10-fold increase in the corrosion resistance of the magnesium alloy.

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Section: Resultsmentioning

confidence: 99%

Structuring of Surface Films Formed on Magnesium in Hot Chlorobenzotriazole Vapors

Goncharova

Luchkin²,

Senchikhin³

et al. 2022

Materials

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“…Результаты спектроскопии электрохимического импеданса позволяют сделать некоторые первичные выводы и о механизме действия изученных КИН. В [3,7,12] показана возможность оценки вклада блокировочного и активационного механизмов ингибирования коррозии в защитное действие препаратов, спектры электрохимического импеданса которых описываются использованной эквивалентной схемой.…”

Section: Rsunclassified

“…Однако, об их синергетическом взаимодействии речь, по-видимому, не идет. Такое явление наблюдалось нами ранее в [3,7] Согласно [7] при оценке защитных свойств ингибиторов по τ, критерием синергетического взаимодействия компонентов смеси является неравенство: τ Σ ,изм. >τ Σ, расч.…”

Section: Rsunclassified

“…Тем не менее, защитное последействие смесевых КИН значительно превосходит последействие составляющих их компонентов. Это еще раз подтверждает вывод [3,7] о том, что при создании эффективных смесевых ингибиторов синергетическое взаимодействие компонентов является желательным, однако не обязательным условием.…”

Section: Rsunclassified

“…Целью данной работы была оценка защитных свойств аналогичных смесей при замене УР на октадециламин (ОДА). Отметим, что ОДА в соответствии с [2,3,7,9] является перспективным КИН.…”

Section: Introductionunclassified

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Lauric acid, octadecylamine, benzotriazole and its derivatives, as well as mixtures of these compounds as chamber corrosion inhibitors of steel

Luchkin,

Goncharova,

Tsvetkova

et al. 2023

cpmrm

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The protective effect of chamber steel corrosion inhibitors based on lauric acid has been studied by electrochemical and corrosion methods. It has been established that its protective effect can be enhanced by additives of octadecylamine, as well as octadecylamine and benzotriazole or its derivatives-tolyltriazole and chlorobenzotriazole. The mechanism of action of all studied compositions and their components is blocking-activating, with a predominance of activation. The protective effect of the studied mixture inhibitors considerably exceeds the protective effect of the components. Nevertheless, an analysis of the mutual influence of the components indicates the absence of their synergistic interactions. It was shown by ellipsometric methods that adsorption of the studied inhibitors inhibits or prevents oxide growth on steel during chamber treatment. During chamber treatment of steel with the studied inhibitors nanosized adsorption films are formed on its surface. There is no unambiguous correlation between their thickness and the protective effect of chamber inhibitors, but the most effective compositions are characterized by the thickness of the adsorption layers of 10 nanometers or more.

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Steel protection with chamber inhibitor IFKhAN-131

Cited by 2 publications

References 0 publications

Structuring of Surface Films Formed on Magnesium in Hot Chlorobenzotriazole Vapors

Structuring of Surface Films Formed on Magnesium in Hot Chlorobenzotriazole Vapors

Lauric acid, octadecylamine, benzotriazole and its derivatives, as well as mixtures of these compounds as chamber corrosion inhibitors of steel

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