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.
- Research Organization:
- Bureau of Mines, College Park, MD (USA). Avondale Metallurgy Research Center
- OSTI ID:
- 6474235
- Report Number(s):
- BM-RI-8308
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALLOYS
ALUMINIUM ALLOYS
BRINES
CALIFORNIA
CARBON STEELS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
DEPOSITION
ELEMENTS
FLUIDS
GEOTHERMAL FLUIDS
Geothermal Legacy
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IMPERIAL VALLEY
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
METALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NORTH AMERICA
POLARIZATION
SCALING
STAINLESS STEEL-316
STAINLESS STEEL-430
STAINLESS STEELS
STEELS
TEST FACILITIES
TITANIUM
TRANSITION ELEMENTS
USA
WESTERN REGION