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
ALUMINIUM ALLOYS
CORROSION
BRINES
CHEMICAL COMPOSITION
CORROSIVE EFFECTS
CARBON STEELS
GEOTHERMAL FLUIDS
NICKEL BASE ALLOYS
STAINLESS STEEL-316
STAINLESS STEEL-430
TITANIUM
CALIFORNIA
DEPOSITION
IMPERIAL VALLEY
POLARIZATION
SCALING
TEST FACILITIES
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELEMENTS
FLUIDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
METALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NORTH AMERICA
STAINLESS STEELS
STEELS
TRANSITION ELEMENTS
USA
WESTERN REGION
Geothermal Legacy