Sodium sulphate and V2O5-induced hot corrosion kinetics and oxides characteristics of the weldments in SA213 T11 steels

Kumar, Ravindra

doi:10.1016/j.matlet.2021.130359

Cited by 5 publications

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These materials are widely used in the superheater, reheater tubes and various components in the gas turbine and power plants [9,10]. Hot corrosion is the most common problem in power generation components, notably in energy conversion and gas turbines [2,11]. Several researchers studied the hot corrosion behaviour of Inconel 617 and 625 in different molten salt environments such as NaCl–KCl–MgCl 2 [12], NaCl–CaCl 2 –MgCl 2 [13], PbSO 4 –ZnO–Pb 3 O 4 –Fe 2 O 3 –7PbCl 2 [14], FLiNaK [15], LiF–Na 2 CO 3 –K 2 CO 3, NaCl–KCl–ZnCl 2 , and Li 2 CO 3 –Na 2 CO 3 –K 2 CO 3 [16], KNO 3 –NaNO 3 [17].…”

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

View full text Add to dashboard Cite

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.

show abstract