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Material performance of alloys in NaNO3/KNO3 at 600°C « Energy Security « Downloads

Date postedNovember 12, 2012
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CategoriesEnergy Security, Posters, Renewable Energy, Solar Energy, Concentrating Solar Power


Descaled corrosion rates for nine alloys immersion tested in binary solar salt are reported. All rates were within 2.5-13.9 [mg/cm2-yr], with regression determining best fit behavior. HR-214 showed the least corrosion after 3000 hours. It should be noted that several alloys had incomplete oxide layers and that fitting and extrapolations are inconclusive. Energy Dispersive Spectroscopy (EDS) found formation found NiO as the primary outer oxide on most high nickel alloys, with the inner oxide layer varying based upon elemental alloying constituents.

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