Abstract
Molten salt containing systems gain in importance for sustainable energy use and production. For research and development, interactions of molten salts with potential container materials are of major interest. This article introduces preparation procedures to display an intact metal and salt microstructure and their interface using light optical microscopy and scanning electron microscopy. The exemplary material combination is the ternary salt mixture NaCl-KCl-MgCl2 and the low alloyed steel 1.4901 (T92) with a maximum service temperature of 550 °C. These are potential elements/materials for use in latent heat thermal energy storages.
Kurzfassung
Systeme, die Salzschmelzen enthalten, gewinnen im Rahmen einer nachhaltigen Energienutzung und Produktion an Bedeutung. Im Forschungs- und Entwicklungsbereich besteht besonderes Interesse an den Wechselwirkungen von Salzschmelzen mit potenziellen Behältermaterialien. Dieser Artikel stellt Präparationsverfahren für die Darstellung eines intakten Metall- und Salzgefüges und ihrer Grenzflächen unter Verwendung von Lichtmikroskopie und Rasterelektronenmikroskopie vor. Die Beispiel-Werkstoffkombination setzt sich aus dem ternären Salzgemisch NaCl-KCl-MgCl2 und dem niedriglegierten Stahl 1.4901 (T92) mit einer maximalen Gebrauchstemperatur von 550 °C zusammen, Elemente, die für einen Einsatz in Latentwärmespeichern in Frage kommen.
About the author
is Head of molten salt research laboratory at BAM since 2020. He was born in 1991 in Berlin. Following his apprenticeship in Metallography in 2010 he studied Material Engineering in Jena. After his Master degree 2015 he joined Siemens R&D and made his PhD in 2019 for the development of brazing processes for gas turbine parts.
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