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April 10, 2026Journal of Materials Research and TechnologyOpen Access

Protective Laser Cladding Coatings for Thermal Energy Storage Tanks in contact with Molten Salt-Based Nanofluids

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Authors

LBLorena Betancor-CazorlaASAdela Svobodova-SedlackovaGCGenís Clavé

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Overview

Investigation reveals protective efficacy of Inconel-625 and Stellite-6 coatings in CSP thermal storage units, suggesting enhanced durability.

Key Points

  • The research aims to investigate the effectiveness of Inconel-625 and Stellite-6 coatings in preventing corrosion caused by molten salt-based nanofluids in thermal energy storage systems.
  • Coatings of Inconel-625 and Stellite-6 were applied to AISI 316L stainless steel samples using laser cladding.
  • Corrosion tests were conducted in a NaNO3 solution containing SiO2 nanoparticles at 450 °C for varying durations (30, 60, 90 days).
  • Thickness loss was assessed through cross-section analysis, and microstructural evaluations were performed using EDS and XRD analysis.
  • Coatings showed almost no thickness loss after 90 days of exposure to the corrosive environment.
  • Microstructural analysis revealed enhanced material contrast indicating effective application of coatings.
  • Chemical compositions of oxides formed during corrosion were identified, affirming the coatings' protective properties.

Cite This Study

Betancor-Cazorla et al. (2026) studied this question.

synapsesocial.com/papers/69d892d16c1944d70ce04155https://doi.org/10.1016/j.jmrt.2026.04.038
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