Influence of Chloride Content in Tap Water on the Corrosion of Unalloyed Steel

Regarding the effect of neutral salts in tap water on the corrosion of unalloyed steel, little data is available, some of it being contradictory. This applies in particular to chlorides. In the present paper, disks rotating at velocities of from 0-2000 min exp --1 and pipes through which tap water f...

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Bibliographic Details
Published in:Materials and corrosion 1985-02, Vol.36 (2), p.68-79
Main Authors: Kuron, D, Grafen, H, Batroff, H-P, Fassler, K, Munster, R
Format: Article
Language:ger
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Summary:Regarding the effect of neutral salts in tap water on the corrosion of unalloyed steel, little data is available, some of it being contradictory. This applies in particular to chlorides. In the present paper, disks rotating at velocities of from 0-2000 min exp --1 and pipes through which tap water flows have been used to investigate, for various water supplies (Ludwigshafen, Leverkusen and Berlin tapwater) and as a function of the chloride concentration (0.28-15.5 mol/m exp 3 ) and of the test period (up to 10 000 hours), the area-related linear rates of loss in weight, the fractional corroded surface areas, the through depths and pit depths, and the distribution of elements in the surface layers. Long-term tests showed that, even for different tap waters, the chloride content has no effect on the linear corrosion rate, this being from 0.03-0.06 mm/a. This was the most important result obtainted. 16 ref.--AA
ISSN:0043-2822