Oxidation (Gas Turbine)

The chemical reaction occurring at high temperatures between metallic components and the oxygen in its surrounding gaseous environment. Oxidation rates increase with temperature. The metal loss resulting from oxidation can be reduced by the formation of protective oxide scales. Chromium, aluminum, and silicon are the only chemical elements known to form protective oxide scales at gas turbine, hot section temperatures. The presence of these elements in turbine blading alloys and coatings results in improved hot section oxidation resistance.