About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Advanced Materials for Harsh Environments
|
Presentation Title |
An Investigation of High Temperature Corrosion Sensing for Coal-based Power Plant Operations |
Author(s) |
Brian Robert Jordan, Edward M. Sabolsky, Daryl Reynolds, Kavin Sivaneri, Kevin Tennant, Derek Hockenberry |
On-Site Speaker (Planned) |
Brian Robert Jordan |
Abstract Scope |
The work focussed upon the development of wireless high temperature sensors for
monitoring the temperature and corrosion of metal components commonly used in coal-fired
boilers. The sensor architecture was based on capacitance change of the material with a
dielectric barrier layer between the metal and ceramic. The sensors design included thick film
refractory metal and/or electrically conductive components pattered over a base ceramic/glass
dielectric layer. These sensors are either directly deposited onto, or transferred over, common
boiler metals, such as stainless steel 304H. Various wireless sensor interrogation methods
and signal processing methods were investigated. The high-temperature corrosion behaviour
of the stainless steel was characterized up to 800ºC in high steam conditions, and the
corrosion kinetics were correlated to the wireless sensor response over this time. Post-
mortem microstructural analysis after corrosion testing was completed on the coupons to
investigate sensor stability and failure mechanisms. |