Corrosion Study of Stainless Steels for Geothermal Sensor Application

Bryant D. Hernandez , California State Polytechnic University, Pomona, Pomona, CA
Raymond Higuera , California State Polytechnic University, Pomona, Pomona, CA
Jocasta Do , California State Polytechnic University, Pomona, Pomona, CA
Dr. Deepti Ballal , OLI Systems, Inc., New York, NY
Dr. Gaurav Das , OLI Systems, Inc., New York, NY
Dr. Andre Anderko , OLI Systems, Inc., Randolph, NJ
Mr. Paul von Hirtz , Thermochem, Inc., Santa Rosa, CA
Dr. Darrell Gallup , Thermochem, Inc., Santa Rosa, CA
Dr. Lietai Yang , Corrinstruments, Inc, Carson City, NV
Dr. Ayello Francois , DNV Energy, Orinda, CA
Dr. Narasi Sridhar , MC Consult, LLC., Temecula, CA
Prof. Vilupanur A. Ravi , California State Polytechnic University, Pomona, Pomona, CA
The purpose of this project is to perform electrochemical corrosion tests in simulated geothermal plant brine. These tests are being conducted at atmospheric pressure at different temperatures, with the upper bound of the test temperature being 95 °C. The tests are expected to provide insights into the effects of temperature and chloride ion activity on open circuit and repassivation potentials that can be incorporated into a computer model to predict the effect of higher temperatures. The primary alloys being tested are duplex stainless steel (2507) and Alloy 625. SS 304 was used as a benchmark alloy. Current results will be presented and discussed.
See more of: Corrosion and Environmental Degradation (AMPP)
See more of: Surface Engineering & Protective Coatings