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Inhibition of carbon steel corrosion in phase-change-materials solution by methionine and proline
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik. Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China .
Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China .
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik.
Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China .
Vise andre og tillknytning
2016 (engelsk)Inngår i: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 111, s. 675-689Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Inhibition of the 1045 carbon steel corrosion by methionine and proline in PCMs solution have been investigated. Electrochemical measurements show that these inhibitors can protect steel against corrosion, with a maximal protection efficiency up to 95.0% by methionine/proline compound inhibitor at molar ratio equal to 5:3. All inhibitors act as anodic-type inhibitor. FESEM, EDS, XRD characterization indicates that the corrosion of steel starts from pitting corrosion of Cl− ion, and gradually evolves into a general corrosion. The NH4FePO4·nH2O, Fe2O3 are the main corrosion products. XPS study confirms that Met and Pro molecule can adsorb on steel surface and form inhibition films. The inhibition mechanism was further investigated through theoretical modeling studies.

sted, utgiver, år, opplag, sider
2016. Vol. 111, s. 675-689
Emneord [en]
Carbon steel, SEM, XRD, Modeling studies, Pitting corrosion
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Identifikatorer
URN: urn:nbn:se:miun:diva-28929DOI: 10.1016/j.corsci.2016.06.005ISI: 000382794000062Scopus ID: 2-s2.0-84983028375OAI: oai:DiVA.org:miun-28929DiVA, id: diva2:974821
Merknad

Funding Details: 2013GXNSFBA, Guangxi Natural Science Foundation

Tilgjengelig fra: 2016-09-27 Laget: 2016-09-27 Sist oppdatert: 2017-11-21bibliografisk kontrollert

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