High Temperature Corrosion on high temperature materials – Metallographic, scanning electron microscopic and microanalytical tests

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Abstract
High temperature corrosion – oxidative damage of metallic materials from hot gas and other fluid and solid components – shortens the life of gas turbines. By comparing the results of laboratory tests under constant conditions with the results of the operation of gas turbines the facts of failure should be clarified.Metallographie examinations, but especially SEM, Microprobe and AES help to clear the facts of failures in the microscopic zones. These tests will help when selecting materials and their protective coatings with the purpose of higher rentability of the plant.