Effects of blending on surface characteristics of copper corrosion products in drinking water distribution systems

    Authors

    W. Z. Xiao; S. K. Hong; Z. J. Tang; S. Seal;J. S. Taylor

    Comments

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    Abbreviated Journal Title

    Corrosion Sci.

    Keywords

    copper; modelling studies; XPS; XRD; corrosion potential; ALKALINE PRECIPITATION; RELEASE; PH; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

    Abstract

    Copper scales formed over 6-months during exposure to ground, surface and saline waters were characterized by EDS, XRD and XPS. Scale color and hardness were light red-brown-black/hard for high alkalinity and blue-green/soft for high SO4 or Cl waters. Cl was present in surface or saline copper scales. The Cu/Cu2O ratio decreased with time indicating an e transfer copper corrosion mechanism. Cu2O, CuO, and Cu(OH)(2) dominated the top 0.5-1 A degrees scale indicating continuous corrosion. Cu2O oxidation to CuO increased with alkalinity, and depended on time and pH. Total copper release was predicted using a Cu(OH)(2) model. (c) 2006 Elsevier Ltd. All rights reserved.

    Journal Title

    Corrosion Science

    Volume

    49

    Issue/Number

    2

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    449

    Last Page

    468

    WOS Identifier

    WOS:000244470600012

    ISSN

    0010-938X

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