Linear Polarization Measurements at High Temperatures in Hypersaline Geothermal Brines

The Bureau of Mines conducted a series of in situ linear polarization measurements in high-temperature, high-pressure hypersaline geothermal brines at the Bureau of Mines Geothermal Test Facility in the Imperial Valley of California. The measurements represented an evaluation of the linear polarization technique for obtaining instantaneous corrosion rates of materials of construction in flowing hypersaline hydrothermal fluids that rapidly form scales on exposed surfaces. A special method was devised for use with the linear polarization technique that resulted in obtaining corrosion rates for 1020 carbon steel, 316 and 430 stainless steel, titanium, various nickel-based alloys, and aluminum 6061 under strong scale-forming conditions. The measurements also provided information on scale-deposition rates in various geothermal environments. Exploratory in situ potentiostatic polarization measurements were made in the flowing brines to qualitatively determine scale-deposition effects on the electrochemical measurements

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Citation Date 1978-01-01T00:00:00

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Original ID 132DE1F112A547738EE0AF25320C6094
Index Date 2016-03-17T21:32:25
Original Format ISO-USGIN
Original Version 1.2

Author

Name Cramer, S.D., Needham, P.B. Jr.
Organization United States Department of the Interior, Bureau of Mines, Washington DC (USA)
Email geoheat@oit.edu