Thermodynamic analysis of corrosion phenomena in high salinity geothermal brines

Conference · Sat Dec 31 23:00:00 EST 1977

OSTI ID:7369283

Macdonald, D D; Syrett, B C

Recent studies are reviewed of the corrosion potential and cyclic voltammetric behavior of AISI 1010 carbon steel, E-Brite 26-1 stainless steel, AISI 316L stainless steel, Haynes Alloy 20 Mod, Carpenter 20 Cb-3, Inconel Alloy 625, Hastelloy Alloy G, Hastelloy Alloy C-276, Titanium 50A (ASTM B265 Gr. 2), and TiCode 21 in a sulfide-free high-salinity geothermal brine taken from a producing well located in the Imperial Valley in Southern California. Potential-pH diagrams for the component metal (Fe, Ni, Cr, Ti)-brine systems at temperatures of 25/sup 0/C and 250/sup 0/C are used to rationalize the corrosion potentials and the oxidation and reduction peak potentials for the alloys observed by cyclic voltammetry. Potential-pH diagrams for iron and nickel in high salinity brine at 25/sup 0/C and 250/sup 0/C containing 10 ppM of total dissolved sulfide are reported. These diagrams are used to analyze the general features of the thermodynamic behavior of iron and nickel in high temperature sulfide-containing geothermal systems. (MHR)

• Research Organization: SRI International, Menlo Park, CA
• OSTI ID: 7369283
• Report Number(s): COO-3904-1--10; CONF-7805211-
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150903* -- Geothermal Engineering-- Corrosion
Scaling & Materials Development
ALLOYS
BRINES
CARBON STEELS
CARPENTER
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
Geothermal Legacy
HASTELLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 625
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
SALINITY
STAINLESS STEELS
STEELS
TANTALUM ALLOYS
THERMODYNAMIC PROPERTIES
TITANIUM ALLOYS