Investigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings

Polymer coatings are one of the most common methods for protecting metal structures from corrosion damage. For example, in the oil and gas industry, polymer coatings are used to protect the inner surfaces of oilfield pipelines. Forecasting the service life of the coating is an unsolved problem. Exis...

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Autores principales:	Mark Kovalev, Ekaterina Alekseeva, Nikita Shaposhnikov, Daniil Lyashenko, Vasiliy Tokarev
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	polymer coatings autoclave tests oil and gas anti-corrosion coatings Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/3aae0be284f046c6bc6a7ceab84a1e71
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id	oai:doaj.org-article:3aae0be284f046c6bc6a7ceab84a1e71
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spelling	oai:doaj.org-article:3aae0be284f046c6bc6a7ceab84a1e712021-11-25T18:21:25ZInvestigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings10.3390/met111117132075-4701https://doaj.org/article/3aae0be284f046c6bc6a7ceab84a1e712021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1713https://doaj.org/toc/2075-4701Polymer coatings are one of the most common methods for protecting metal structures from corrosion damage. For example, in the oil and gas industry, polymer coatings are used to protect the inner surfaces of oilfield pipelines. Forecasting the service life of the coating is an unsolved problem. Existing test methods allow to assess the quality of coating application and compliance with the declared properties, for example, resistance at a certain temperature, but do not allow to understand the expected service life or degradation dynamics. One solution to this problem may be the development of existing methods of autoclave testing of coatings with the addition of more criteria for assessing degradation. This paper considers the methodological features of autoclave testing with rapid pressure relief. The decompression autoclave test was considered from the point of view of the principles of its conduct and evaluation of test results. The tests were carried out in environments containing hydrogen sulfide and carbon dioxide. The main object of the tests was anticorrosive polymer powder coatings applied in industrial conditions. The work assessed the influence of the following factors on the test result: pressure relief time, test cycle, and coating quality. Attention was also paid to the evaluation methods; aside from the adhesion assessment, optical microscopy and the evaluation of the microhardness of coatings were used. As a result of the work carried out, it was shown that the pressure relief rate within 5 s affects the test results. An increase in micropores and a drop in the microhardness of coatings after cyclic autoclave tests were also shown. The method of assessing the degradation of coatings using microhardness also showed the convergence of the results with the traditional method of assessing adhesion. The results of the work can be used to modify the autoclave testing method and transition to resource forecasting.Mark KovalevEkaterina AlekseevaNikita ShaposhnikovDaniil LyashenkoVasiliy TokarevMDPI AGarticlepolymer coatingsautoclave testsoil and gasanti-corrosion coatingsMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1713, p 1713 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	polymer coatings autoclave tests oil and gas anti-corrosion coatings Mining engineering. Metallurgy TN1-997
spellingShingle	polymer coatings autoclave tests oil and gas anti-corrosion coatings Mining engineering. Metallurgy TN1-997 Mark Kovalev Ekaterina Alekseeva Nikita Shaposhnikov Daniil Lyashenko Vasiliy Tokarev Investigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings
description	Polymer coatings are one of the most common methods for protecting metal structures from corrosion damage. For example, in the oil and gas industry, polymer coatings are used to protect the inner surfaces of oilfield pipelines. Forecasting the service life of the coating is an unsolved problem. Existing test methods allow to assess the quality of coating application and compliance with the declared properties, for example, resistance at a certain temperature, but do not allow to understand the expected service life or degradation dynamics. One solution to this problem may be the development of existing methods of autoclave testing of coatings with the addition of more criteria for assessing degradation. This paper considers the methodological features of autoclave testing with rapid pressure relief. The decompression autoclave test was considered from the point of view of the principles of its conduct and evaluation of test results. The tests were carried out in environments containing hydrogen sulfide and carbon dioxide. The main object of the tests was anticorrosive polymer powder coatings applied in industrial conditions. The work assessed the influence of the following factors on the test result: pressure relief time, test cycle, and coating quality. Attention was also paid to the evaluation methods; aside from the adhesion assessment, optical microscopy and the evaluation of the microhardness of coatings were used. As a result of the work carried out, it was shown that the pressure relief rate within 5 s affects the test results. An increase in micropores and a drop in the microhardness of coatings after cyclic autoclave tests were also shown. The method of assessing the degradation of coatings using microhardness also showed the convergence of the results with the traditional method of assessing adhesion. The results of the work can be used to modify the autoclave testing method and transition to resource forecasting.
format	article
author	Mark Kovalev Ekaterina Alekseeva Nikita Shaposhnikov Daniil Lyashenko Vasiliy Tokarev
author_facet	Mark Kovalev Ekaterina Alekseeva Nikita Shaposhnikov Daniil Lyashenko Vasiliy Tokarev
author_sort	Mark Kovalev
title	Investigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings
title_short	Investigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings
title_full	Investigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings
title_fullStr	Investigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings
title_full_unstemmed	Investigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings
title_sort	investigation of factors influencing the autoclave tests results of internal anticorrosive polymer coatings
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3aae0be284f046c6bc6a7ceab84a1e71
work_keys_str_mv	AT markkovalev investigationoffactorsinfluencingtheautoclavetestsresultsofinternalanticorrosivepolymercoatings AT ekaterinaalekseeva investigationoffactorsinfluencingtheautoclavetestsresultsofinternalanticorrosivepolymercoatings AT nikitashaposhnikov investigationoffactorsinfluencingtheautoclavetestsresultsofinternalanticorrosivepolymercoatings AT daniillyashenko investigationoffactorsinfluencingtheautoclavetestsresultsofinternalanticorrosivepolymercoatings AT vasiliytokarev investigationoffactorsinfluencingtheautoclavetestsresultsofinternalanticorrosivepolymercoatings
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Investigation of Factors Influencing the Autoclave Tests Results of Internal Anticorrosive Polymer Coatings

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