Abstract
Combined erosion-corrosion conditions can cause especially severe degradation of materials because the erosive component often adversely affects the protective properties of the corrosion product. This paper describes the various ways that erosive and corrosive processes may in teract with one another. Depending upon the magnitudes of these components a number of regimes are described for metals and alloys. The pure erosion and pure corrosion regimes prevail when the corrosion component or the erosive component respectively is negligible. In the erosion-enhanced corrosion regime the erosion component causes the corrosion product to be less protective because of spalling, by decreasing its thickness, or by causing the transport processes through this product to be changed. The oxidation-affected erosion regime involves processes whereby oxidation products affect the erosion properties of the metals.
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