Refurbishing superalloy components for gas turbines

Abstract

Since 1968, FVV have developed specific maintenance techniques to ensure the safe operation of turbine blades. Among the new methods employed or shortly to be used is the non–destructive testing of blades by optical and scanning electron microscopy, and this is described in the paper. New possibilities for predicting remaining blade life under various conditions of stress and temperature are considered, and new types of coating obtained using plasma spraying and hot isostatic pressing are discussed.

MST/97