IRON CORROSION IN DRINKING-WATER DISTRIBUTION-SYSTEMS - THE EFFECT OFPH, CALCIUM AND HYDROGEN CARBONATE

Authors
SANDER A BERGHULT B BROO AE JOHANSSON EL HEDBERG T
Citation
A. Sander et al., IRON CORROSION IN DRINKING-WATER DISTRIBUTION-SYSTEMS - THE EFFECT OFPH, CALCIUM AND HYDROGEN CARBONATE, Corrosion science, 38(3), 1996, pp. 443-455
Citations number
26
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Corrosion science → ACNP
ISSN journal
0010938X
Volume
38
Issue
3
Year of publication
1996
Pages
443 - 455
Database
ISI
SICI code
0010-938X(1996)38:3<443:ICIDD->2.0.ZU;2-L
Abstract
The corrosion of iron in synthetic drinking water has been studied thr ough potentiodynamic sweeps and coupon tests. Corrosion rate follows a reversed proportional dependence on the logarithm of the free carbon dioxide content (the sum of protonated carbonic acid and dissolved car bon dioxide). In water with low total carbonate concentrations the add ition of calcium ions decreases the corrosion rate. In waters with mod erate and high total carbonate content no dependence on the calcium co ncentration is observed.