Abstract
THE principal solid corrosion products of iron in water are magnetite and hydrated forms of ferric oxide, depending on the degree of oxidation. The occurrence of intermediate products, termed green rusts, was reported by Keller1 in 1948, since when the formation and decomposition of these compounds, precipitated from aqueous solution by controlled oxidation of ferrous hydroxide, have been extensively studied2–5. It has been proposed2,3 that specific anions are incorporated in the crystal structure of some green rusts, although no substantial evidence has been found to confirm this. A number of green rusts have been classified crystallographically3 as follows: first, rhombohedral green rusts I (GRI) formed in Cl−, SO42− and Br− solutions and (second), hexagonal green rust II (GRII) formed only in SO42− solutions by decomposition of GRI. The interrelationships between the various products involved in the oxidation of ferrous hydroxide have been summarised by Misawa et al.5 In this paper a preliminary account is given of the crystal structure of a rhombohedral green rust formed by corrosion of iron which, although of similar unit cell dimensions to GRI, differs structurally from those previously reported.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Keller, G., thesis, Univ. Berne (1948).
Dasgupta, D. R., and Mackay, A. L., J. Phys. Soc. Japan, 14, 932–935 (1959).
Bernal, J. D., Dasgupta, D. R., and Mackay, A. L., Clay Miner. Bull., 4, 15–30 (1959).
Feitknecht, W., Z. Electrochem., 63, 34–43 (1959).
Misawa, T., Hashimoto, K., and Shimodaira, S., J. inorg. nucl. Chem., 35, 4167–4174 (1973).
Butler, G., and Beynon, J. G., Corros. Sci., 7, 385–404 (1967).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
McGILL, I., McENANEY, B. & SMITH, D. Crystal structure of green rust formed by corrosion of cast iron. Nature 259, 200–201 (1976). https://doi.org/10.1038/259200a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/259200a0
This article is cited by
-
Facile synthesis of ultrathin magnetic iron oxide nanoplates by Schikorr reaction
Nanoscale Research Letters (2013)
-
Poorly-crystalline minerals and complex mineral assemblages
Hyperfine Interactions (1989)
-
Green rust: a pyroaurite type structure
Nature (1976)
-
Green rust: a pyroaurite type structure
Nature (1976)
-
Green rust: a pyroaurite type structure (reply)
Nature (1976)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.