About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
High Temperature Oxidation of Metals and Ceramics
|
Presentation Title |
Factors Affecting Deposit-Induced Corrosion of Aero-Turbine Components at Elevated Temperatures |
Author(s) |
Brian Gleeson |
On-Site Speaker (Planned) |
Brian Gleeson |
Abstract Scope |
Hot corrosion is an accelerated degradation process that is generally considered to involve deposition of corrosive species (e.g., sulfates) from the surrounding environment to the surface of hot components, followed by destruction of the protective oxide scale. Gas turbine engine components, particularly high-pressure turbine blades and rotors, exposed to harsh environments are apt to encounter two modes of hot corrosion: high temperature hot corrosion (Type I) in the temperature range 850-1000°C and low temperature hot corrosion (Type II) in the range 600-800°C. This presentation will overview research conducted at the University of Pittsburgh to advance understanding of sulfate-based deposit-induced corrosion. It will be shown that an effective laboratory-scale testing procedure has been developed that better simulates the form and extent of degradation found in service. |