Damage analysis of 601 nickel superalloy in eutectic Na2CO3/NaCl molten salt under isothermal and thermal cycling conditions

Bell, Stuart; Lippiatt, Kaleb; Steinberg, Ted; Will, Geoffrey

doi:10.1016/j.solener.2019.09.030

Cited by 20 publications

(1 citation statement)

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“…The molten salt leads to an aggressive corrosion reaction on storage container materials [4]. It is important to identify the corrosion-resistant materials for the solar thermal energy application in the CSP plants [5]. Nickel-based superalloys provide a promising solution to high-temperature corrosion resistance [6].…”

Section: Introductionmentioning

confidence: 99%

Investigation of corrosion behaviour on Ni–Cr–Co and Ni–Cr–Mo alloys exposed to molten salt for thermal energy storage applications

Kumar

Manoharan

2022

Corrosion Engineering, Science and Technology

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This research mainly focuses on selecting phase change materials (PCM) and container materials for next-generation concentrated solar power plants (CSP). The present study investigates the hot corrosion behaviour of Inconel 617 and 625 in Na 2 SO 4 + 45 wt-% diatomite PCM environment at 800°C for 40, 80 and 120 h. Oxide scales developed on the alloy surfaces were examined by Scanning electron microscope (SEM) and X-ray diffraction (XRD) to study morphology and oxide phases. The result indicates that Inconel 617 and 625 weight changes were 1.239 and 0.925 mg cm −2 at 800°C for a maximum duration of 120 h. The dense oxide of Cr 2 O 3 is formed on alloys 617 and 625, which gives better oxidation resistance in a PCM environment. Moreover, the Inconel 625 shows lesser weight gain compared to Inconel 617 due to the presence of higher wt-% of Cr in the alloy and Nb formation oxides reducing corrosion species diffusion rate.

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Section: Introductionmentioning

confidence: 99%