Influence of Liquid Sodium on Mechanical Properties of Steels, Refractory Alloys and Ceramics

Impact of liquid sodium corrosion on microstructure and electrical properties of yttrium-doped thoria prepared by co-precipitation

“…Indeed, different potential failures were evidenced, but appear to be mainly linked with mechanical effects [16,[18][19][20][21]. Fractures often occurred very rapidly after contact with liquid sodium between 360 and 400°C, but more likely due to thermal shock rather than to sodium corrosion [16,22]. Several authors also reported on the embrittlement of the electrolyte ceramic through the formation of cracks during Na-testing at 400°C.…”

CSP Gen3: Liquid-Phase Pathway to SunShot

“…One path to take advantage of this attribute is to apply molybdenum-based coatings such as Tribaloy 700 to nickel-alloys. Image from [57] In summary, current knowledge of the thermo-chemical compatibility of liquid sodium with metal alloys (mostly steel alloys) up to temperatures around 650°C is sufficient, concluding that creep and fatigue life was not adversely affected, and even slightly increased in sodium compared to air [59]. However, there is a gap in the literature for higher temperatures (up to 800°C), which is of keen interest for the development of solar receivers and advanced thermal energy storage technologies.…”

HfO2-based electrolyte potentiometric oxygen sensors for liquid sodium

“…-The low resistance of ceramics to thermal and mechanical shocks; -The effects of radiation; -The corrosion of metals and alloys [6];…”

“…To our knowledge, the characterization of HfO2-based materials at temperatures lower than 500°C has not yet been conducted. 6 The aims of this paper are to provide the new experimental results of oxygen probing in molten sodium using yttria-doped hafnia, to compare the performance of this probe with thoria and zirconia probes and to analyze the sources of discrepancies between the experimental results and the expected values.…”