TY - JOUR A1 - Stoljarova, A. A1 - Regenspurg, S. A1 - Bäßler, Ralph A1 - Mathiesen, T. A1 - Braüner Nielsen, J. T1 - Effect of lead and copper containing brine on steel materials for geothermal applications – A corrosion study T2 - Geothermics N2 - Geothermal brines often contain high amounts of lead and copper ions that can precipitate as native Cu and Pb as consequence of galvanic corrosion when brines react with carbon steel materials. This contribution evaluates which materials could overcome the problem of galvanic corrosion at geothermal environment. The behavior of these materials in water containing high chloride concentration (> 100 g/L NaCl) as well as various amounts of dissolved bCl2 and/or CuCl2 was characterized by electrochemical and exposure measurements. Both methods reveal carbon steel suffers corrosion susceptibility, accompanied by Cu◦ and/or Pb◦ precipitation on the surface. Electrochemical measurements on stainless steels result in significant difference in corrosion and repassivation potentials (Ecorr = -189 mV, Erep = 70 mV), indicating a good corrosion resistance. PB - Elsevier CY - Amsterdam KW - Copper KW - Lead KW - Corrosion KW - Steel KW - Geothermal energy PY - 2021 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/51976 AN - OPUS4-51976 SN - 0375-6505 VL - 91 SP - 102024 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany