Material selection for a gas turbine liner using MC 350-8 coating

Abstract

Most of the components of the gas turbine used in aeronautics and industrial applications are heated at high temperature to achieve maximum efficiency. The life of the materials used for the fabrication of these components depends on the optimized temperature. High heat load and high thermal stress are induced on the component due to continuous exposure of the component to heat. This stress may create a decline in the material life. Profiling of temperature on the component surface becomes mandatory. The present work concentrates on the prediction of thermal stress based on the distribution of temperature predicted on a hot surface by using a novel coating. Two liners made up of Stainless-Steel Alloy 304 and Stainless-Steel Alloy 316 has been coated with MC 350-8 for the surface temperature detection. The study presented focuses on the determination of surface temperature, thermal stress and linear strain at different sections of a gas turbine liner made up of two alloys. The better material has been selected based on the observed results of thermal stress and linear strain.