|About this Abstract
||Materials Science & Technology 2012
||Surface Protection for Enhanced Materials Performance: Science, Technology and Applications
||Transient and Steady State Oxidation of MCrAlY Bond Coats in Simulated High Hydrogen Content Fuel Combustion Environments
||Matthew Hunt Sullivan, Daniel R. Mumm
|On-Site Speaker (Planned)
||Matthew Hunt Sullivan
The emergence of high hydrogen content fuels as replacements for existing stationary and propulsion turbine engine fuels necessitates a more complete understanding of the associated combustion effects on thermal barrier coating materials systems. In particular, differences in the partial pressures of water vapor and oxygen are expected to alter the oxidation behavior of the MCrAlY bond coat layer. The roles of these species are discussed in relation to both steady state and transient oxidation. The desirable alumina and undesirable spinel phases are characterized and quantified in variable environments in order to provide mechanistic insight into their development. As a competing effect against growth, the role of material volatilization is also considered from an experimental and applications point of view.