Influence of cathode polarization on protective properties of thermoreactive coatings for main pipelines
Keywords:
cathodic disbondment, cathodic polarization, hybrid-epoxide coating, polyurethane coating, protective potential.Abstract
The effect of cathodic polarization under cyclical temperature changing (from room temperature to 70 oC) on the protective
properties of new and artificially aged heat-curing coatings for main pipelines has been investigated. It is shown that cathodic
disbondment of coatings depends on their properties, temperature, applied potential. It has been established that the reducing (by
absolute value) of the protective potential (with the IR component) from -1.45 to -0.75 V facilitate to retaining of the protective
properties of coatings: the disbondment radius of a new hybrid-epoxide coating decreases in 3.3 times, aged coating – in 1.7
times, new and aged polyurethane coating – more than 20 times.
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References
[1] Ovchinnikov, II 2012, ‘Investigation of the behavior
of shell structures used in environments causing corrosive
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[2] Spiridovich, EA 2014, The increase of reliability of
gas main pipelines under conditions of stress-corrosion
cracking: Thesis for the degree of the Doctor of Technical
Sciences: 25.00.19, Nizhniy Novgorod, 422 p. [in Russian]
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corrosion’, Potential, no. 3–4. – Access mode:
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[4] Yushmanov, VN 2012, Perfection of methods for
prevention of stress-corrosion of main gas pipelines metal:
Abstract of the thesis for the degree of the Candidate of
Technical Sciences, Uhta, 178 p. [in Russian]
[5] ‘Sankara Papavinasam and Alex Doiron. Relevance
of Cathodic Disbondment Test for Evaluating External
Pipeline Coatings at Higher Temperatures’ in materials of
Confernce & EXPO “NASE. CORRSION CONTROL 2009”,
PAPER 09050, pp. 1–15.
[6] Higgins, GL & Cable, JP 1987, ‘Aspects of cathodic
disbondment testing at evaluated temperature’, Industrial
corrosion, pp. 12–16.
[7] Frantsevich, IN, Lyashenko, ME & Grimaylovskiy,
VA 1968, ‘Experience in protecting the Dashava-Kiev gas
pipeline from soil corrosion and wandering currents’,
Protection of metals, no. 5, pp. 597–603. [in Russian]
[8] Frantsevich, IN, Pilipenko, NA & Lyashenko, ME
1956, ‘The influence of cathode polarization of steel gas
pipelines under electric protection conditions on the condition
of insulating bituminous coa’, Problems of powder metallurgy
and strength of materials, Iss. 3, pp. 3–13. [in Russian]
[9] Osadchuk, SO, Nirkova, LI, Ribakov, AO &
Melnichuk, SL 2017, ‘Influence of cathodic polarization level
on protective properties of new and aged tape coatings of main
pipelines’, Scientific Bulletin of IFNTUNG, no. 1(42), pp. 61–
66. [in Ukrainian]
[10] DSTU 4219–2003, Steel main pipelines. General
requirements for corrosion protection, Kyiv,
Derzhspozhivstandart Ukrainy (National standard of Ukraine),
p. 68. [in Ukrainian]
[11] Cherry, BW & Gould, AN 1989, ‘Cathodic
disbondment mechanisms for a pipeline coating’, Corros.
Australas, 14, no. 2, pp. 8–12.
of shell structures used in environments causing corrosive
cracking’, Internet journal "RESEARCH", no. 4, pp. 1–30. [in
Russian]
[2] Spiridovich, EA 2014, The increase of reliability of
gas main pipelines under conditions of stress-corrosion
cracking: Thesis for the degree of the Doctor of Technical
Sciences: 25.00.19, Nizhniy Novgorod, 422 p. [in Russian]
[3] Tout, AI 1998, ‘Protection of pipelines from stress
corrosion’, Potential, no. 3–4. – Access mode:
http://vniist.ru/vniist/history/press/54.htm, application date
29.01.2019. [in Russian]
[4] Yushmanov, VN 2012, Perfection of methods for
prevention of stress-corrosion of main gas pipelines metal:
Abstract of the thesis for the degree of the Candidate of
Technical Sciences, Uhta, 178 p. [in Russian]
[5] ‘Sankara Papavinasam and Alex Doiron. Relevance
of Cathodic Disbondment Test for Evaluating External
Pipeline Coatings at Higher Temperatures’ in materials of
Confernce & EXPO “NASE. CORRSION CONTROL 2009”,
PAPER 09050, pp. 1–15.
[6] Higgins, GL & Cable, JP 1987, ‘Aspects of cathodic
disbondment testing at evaluated temperature’, Industrial
corrosion, pp. 12–16.
[7] Frantsevich, IN, Lyashenko, ME & Grimaylovskiy,
VA 1968, ‘Experience in protecting the Dashava-Kiev gas
pipeline from soil corrosion and wandering currents’,
Protection of metals, no. 5, pp. 597–603. [in Russian]
[8] Frantsevich, IN, Pilipenko, NA & Lyashenko, ME
1956, ‘The influence of cathode polarization of steel gas
pipelines under electric protection conditions on the condition
of insulating bituminous coa’, Problems of powder metallurgy
and strength of materials, Iss. 3, pp. 3–13. [in Russian]
[9] Osadchuk, SO, Nirkova, LI, Ribakov, AO &
Melnichuk, SL 2017, ‘Influence of cathodic polarization level
on protective properties of new and aged tape coatings of main
pipelines’, Scientific Bulletin of IFNTUNG, no. 1(42), pp. 61–
66. [in Ukrainian]
[10] DSTU 4219–2003, Steel main pipelines. General
requirements for corrosion protection, Kyiv,
Derzhspozhivstandart Ukrainy (National standard of Ukraine),
p. 68. [in Ukrainian]
[11] Cherry, BW & Gould, AN 1989, ‘Cathodic
disbondment mechanisms for a pipeline coating’, Corros.
Australas, 14, no. 2, pp. 8–12.
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Published
2019-05-30
How to Cite
A. O. Rybakov, S. L. Melnychuk, S. O. O. L. I. N. (2019). Influence of cathode polarization on protective properties of thermoreactive coatings for main pipelines. JOURNAL OF HYDROCARBON POWER ENGINEERING, 5(2), 52–58. Retrieved from https://ogpe.nung.edu.ua/index.php/jhpe/article/view/83
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OIL AND GAS TRANSPORTATION
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