TY - CONF A1 - Bäßler, Ralph A1 - Yevtushenko, Oleksandra A1 - Hattendorf, H. T1 - Suitability of high alloyed materials in molten salts at 600 °C N2 - Within the last years the use of feasible alternative energy sources has risen and is going to replace fossil resources more and more. Nevertheless, service conditions in solar facilities are due to the chemical composition of heat transmission media and temperatures, in many cases, extreme in terms of corrosion. Since the construction of power plants shall be economical with maximum life service, materials selection based on preliminary material qualification is essential to guarantee a secure and reliable operation of those facilities. The materials selection depends on the operation temperature of a power plant on the chemical composition of the transmission fluid used. In high corrosive environments Ni-based alloys are often used as an all-round solution for the construction of corrosion resistant parts, because of their good corrosion properties. However, there might be limits for their use regarding their corrosion behavior, with which this contribution deals. By means of electrochemical measurements and exposure tests the suitability of two high alloyed materials X8NiCrSi38 18 and NiCr25FeAlYB in molten nitrate salt (60 % NaNO3/40 % KNO3) was characterized at 600 °C. T2 - NACE International Corrosion Conference CY - Vancouver, BC, Canada DA - 06.03.2016 KW - Localized corrosion KW - Nickel based alloys KW - Solar energy KW - Renewables KW - Electrochemical characterization KW - X8NiCrSi38-18 KW - NiCr25FeAlYB PY - 2016 SP - 7363-1 EP - 7363-9 CY - Houston, USA AN - OPUS4-36988 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bäßler, Ralph A1 - Yevtushenko, Oleksandra A1 - Hattendorf, H. T1 - Electrochemical characterization of high alloyed materials in molten salts for solar energy applications N2 - Within the last years the use of feasible alternative energy sources has risen and is going to replace fossil resources more and more. Nevertheless, service conditions in solar facilities are due to the chemical composition of heat transmission media and temperatures, in many cases, extreme in terms of corrosion. Since the construction of power plants shall be economical with maximum life service, materials selection based on preliminary material qualification is essential to guarantee a secure and reliable operation of those facilities. The materials selection depends on the operation temperature of a power plant on the chemical composition of the transmission fluid used. In high corrosive environments Ni-based alloys are often used as an all-round solution for the construction of corrosion resistant parts, because of their good corrosion properties. However, there might be limits for their use regarding their corrosion behavior, with which this contribution deals. Experiences from the electrochemical characterization of materials in aqueous solutions are transferred to molten salts, providing a good addition to common exposure tests at temperatures from 450 0C to 600 0C. By means of electrochemical measurements and exposure tests the suitability of high alloyed materials in molten nitrate salt (60 % NaNO3/40 % KNO3) can be characterized. The method was verified on different Ni-based alloys (UNS N08810, UNS N06600) and Titanium (UNS R50250). T2 - NACE International Corrosion Conference 2015 CY - Dallas, TX, USA DA - 15.03.2015 KW - Localized corrosion KW - Nickel based alloys KW - Solar energy KW - Renewables KW - Electrochemical characterization KW - UNS N08810 KW - UNS N06600 KW - UNS R50250 PY - 2015 SP - paper 5659, S. 1 EP - 9 AN - OPUS4-34748 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -