Abstract

OSORIO, JULIAN D.; TORO, ALEJANDRO  and  HERNANDEZ-ORTIZ, JUAN P.. THERMAL BARRIER COATINGS FOR GAS TURBINE APPLICATIONS: FAILURE MECHANISMS AND KEY MICROSTRUCTURAL FEATURES. Dyna rev.fac.nac.minas [online]. 2012, vol.79, n.176, pp.149-158. ISSN 0012-7353.

Advances in new materials for current power generation devices, such as gas turbines, have led to more efficient and durable engines that supply rising energy demands. High efficiencies in gas turbines, due to higher operating temperatures, have been accomplished through the development of thermal barrier coatings. These are multilayered systems that provide thermal isolation and protection against corrosion and high temperature erosion. In this work, we describe barrier application processes, their microstructural characteristics and their main failure mechanisms. Two different thermal barrier coatings are characterized and the latest trends of these systems are summarized.

Keywords : Thermal Barrier Coating (TBC); Gas Turbine; Failure mechanisms.

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