LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

High temperature corrosion of Hastelloy C22 in molten alkali salts: The effect of pre-oxidation treatment

Photo from wikipedia

Abstract The optimum protective oxide layer was expected to provide protection and reduce the corrosion damage of superheater material. The corrosion behaviour of raw and pre-oxidised Hastelloy C22 was investigated… Click to show full abstract

Abstract The optimum protective oxide layer was expected to provide protection and reduce the corrosion damage of superheater material. The corrosion behaviour of raw and pre-oxidised Hastelloy C22 was investigated by exposing the selected samples to molten alkali salts (95.5 wt% KCl +4.5 wt% NaCl) at 700 °C for 100 h. The pre-oxidised Hastelloy C22 exhibited better corrosion resistance than raw Hastelloy C22 during exposure to molten alkali salt. The pre-oxidation treatment delayed the penetration of the corrosive reagent into the superalloy substrate. Schematic models of oxidation behaviour and corrosion mechanism in molten salts were presented in this work.

Keywords: alkali salts; corrosion; hastelloy c22; molten alkali

Journal Title: Corrosion Science
Year Published: 2020

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.