|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Thermodynamic Applications, Optimizations and Simulations in High-Temperature Processes: An EPD Symposium in Honor of Christopher W. Bale's 70th Birthday
||NN-16: Thermodynamics and Kinetics of Salt Deposition for Burner Rig Hot Corrosion Studies
||Crescent Islam, Elizabeth Opila
|On-Site Speaker (Planned)
Alloy hot corrosion occurs in marine environments resulting from the deposition of low-melting temperature salts such as Na2SO4 and MgSO4 derived from sulfur impurities in the fuel and ingested sea salt. In combustion environments these sulfates react with and disrupt the protective oxide layer on the surface of superalloys and metallic coatings. A Low Velocity Burner Rig was utilized to generate a hot corrosion environment when 0.5 wt% sulfur-doped diesel fuel was combusted in air with injection of simulated seawater. Samples of 316 stainless steel, alumina, and a platinum standard were exposed to the combustion gas flow at 700°C and 1 atm pressure for times up to 2 weeks to characterize salt deposition on a variety of reacting and non-reacting substrates. Salt deposition was monitored by weight change and ICP-OES analysis of products in a post-test water rinse. Thermodynamic and kinetic models were utilized to explain these results.
||Planned: TMS Journal: Metallurgical and Materials Transactions