Browsing by Author "Cotterrell, M H"

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    The influence of water composition on the pitting behaviour of newly developed corrosion resistant steels
    (1988) Cotterrell, M H; Allen, Colin; Noel, Robert E J
    The mechanisation of the working stapes in South African gold mines has required the introduction of a fundamentally new technology, hydro-power, in which machines are powered hydraulically using mine water fed from above ground. Mine water is aggressive and has a variable acidity and pH, and contains high concentrations of sulphate, chloride and nitrate ions. In order to minimise the pitting corrosion of piping and stoping machinery a compromise between selecting a suitable corrosion resistant material and treating the mine water to an acceptable level of corrosiveness is being sought.