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Scientific paper - Original scientific paper
The Effect of Bicarbonate/Carbonate Ions on the Formation of Iron Rust
Croatica Chemica Acta, 77 (2004), 1-2; 141-151. urn:nbn:hr:217:184583
Musić, Svetozar; Nowik, Israel; Ristić, Mira; Orehovec, Zvonko; Popović, Stanko

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Musić, S., Nowik, I., Ristić, M., Orehovec, Z. & Popović, S. (2004). The Effect of Bicarbonate/Carbonate Ions on the Formation of Iron Rust. Croatica Chemica Acta, 77. (1-2), 141-151. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:184583

Musić, Svetozar, et al. "The Effect of Bicarbonate/Carbonate Ions on the Formation of Iron Rust." Croatica Chemica Acta, vol. 77, no. 1-2, 2004, pp. 141-151. https://urn.nsk.hr/urn:nbn:hr:217:184583

Musić, Svetozar, Israel Nowik, Mira Ristić, Zvonko Orehovec and Stanko Popović. "The Effect of Bicarbonate/Carbonate Ions on the Formation of Iron Rust." Croatica Chemica Acta 77, no. 1-2 (2004): 141-151. https://urn.nsk.hr/urn:nbn:hr:217:184583

Musić, S., et al. (2004) 'The Effect of Bicarbonate/Carbonate Ions on the Formation of Iron Rust', Croatica Chemica Acta, 77(1-2), pp. 141-151. Available at: https://urn.nsk.hr/urn:nbn:hr:217:184583 (Accessed 23 April 2024)

Musić S, Nowik I, Ristić M, Orehovec Z, Popović S. The Effect of Bicarbonate/Carbonate Ions on the Formation of Iron Rust. Croatica Chemica Acta [Internet]. 2004 [cited 2024 April 23];77(1-2):141-151. Available at: https://urn.nsk.hr/urn:nbn:hr:217:184583

S. Musić, I. Nowik, M. Ristić, Z. Orehovec and S. Popović, "The Effect of Bicarbonate/Carbonate Ions on the Formation of Iron Rust", Croatica Chemica Acta, vol. 77, no. 1-2, pp. 141-151, 2004. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:184583. [Accessed: 23 April 2024]

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Metadata
Title (english)The Effect of Bicarbonate/Carbonate Ions on the Formation of Iron Rust
AuthorSvetozar Musić
AuthorIsrael Nowik
AuthorMira Ristić
AuthorZvonko Orehovec
MBZ: 279471
AuthorStanko Popović
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The effect of bicarbonate/carbonate ions on the formation of iron rust in an aqueous medium has been investigated using XRD, Mössbauer and FT-IR spectroscopies. Corrosion of carbon steel in doubly distilled water was monitored as reference process. Lepidocrocite as the dominant phase and magnetite were detected in rust generated in doubly distilled water in a period from three weeks to one year at room temperature. At 90 oC, magnetite and small amounts of hematite/goethite were formed in a period from one day to three weeks. In these rust samples FT-IR spectroscopy detected a very small amount of lepidocrocite, which dissolves and thus occurs in overall phase transformations in rust. On the other hand, goethite was found as a dominant phase in rust formed in natural water containing a significant amount of bicarbonate ions, whereas magnetite and lepidocrocite were minor phases. In 0.005 M Na2CO3, goethite and magnetite were generated at room temperature, and after one month of corrosion, magnetite was present only in traces. Corrosion in 0.005 M Na2CO3 at 90 oC generated Fe2(OH)2CO3 and magnetite. A certain analogy between the precipitation of Fe(III)-oxyhydroxides from iron-salt solutions containing carbonates and the formation of goethite and lepidocrocite in rust was shown. Mössbauer spectroscopy showed that microstructural properties of the oxide phases also varied. Magnetite showed substoichiometry (Fe3-xO4) and in some cases it was difficult to distinguish between Fe3-xO4 and maghemite (γ -Fe2O3). Mössbauer spectra, recorded as a function of temperature, showed poor crystallinity and/or superparamagnetic behavior of goethite particles. Also, the Mössbauer spectra of the rust formed in carbonate solutions provided evidence of amorphous fraction, which is in agreement with XRD. A difference between the results of present investigation and those obtained by other researchers can be attributed to the electrochemical stimulation of steel (iron) surfaces in bicarbonate/carbonate aqueous media and the shorter corrosion times used in their experiments.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleCroatica Chemica Acta
Numberingvol. 77, no. 1-2, pp. 141-151
p-ISSN0011-1643
e-ISSN1334-417X
URN:NBNurn:nbn:hr:217:184583
Publication2004
Document URLhttps://hrcak.srce.hr/102658
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 3.0 Unported (CC BY 3.0) icon
Created on2019-10-13 18:36:17