A scanning electrochemical technique is used to show the influence of differential aeration on the kinetics and mechanism of corrosion reactions occurring at the exposed edge of galvanised sheet steels overcoated with organic layers of dissimilar thickness.

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in Wiley InterScience (www.interscience.wiley.com). The phase separation of liquid-liquid two-phase flow at a T-junction has been studied using kerosene and deionized water as working fluids and a T-junction with a horizontal main pipe and a vertically upward side arm. Separation data are evaluated by a new criterion: separation efficiency. The results show that the T-junction is highly efficient at separating two immiscible liquids when the flows approaching the T-junction are stratified and when the fractional mass take offs close to the inlet kerosene mass fraction. A new model has been proposed for the phase separation. Comparison between the model and the experimental data shows that the data is well represented by the model.