Are NaCl and KCl equally corrosive on superheater materials of steam boilers?

S Enestam, Dorota Paulina Bankiewicz, J Tuiremo, K Makela, Mikko Hupa

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    100 Citeringar (Scopus)


    Alkali chlorides deposited on superheater tubes are known to cause corrosion in boilers burning biofuels and waste. The objective of this work was to compare the corrosivities of KCl and NaCl on commonly used superheater steels at typical superheater tube temperatures (400-650 degrees C). Two austenitic stainless steels and one low alloy steel were tested under laboratory conditions in air. The results show some differences between the two salts in terms of corrosion behaviour and internal degradation. However, for practical applications, the two chlorides are equally corrosive on the tested steels under the experimental conditions considered.
    Sidor (från-till)294–306
    Antal sidor13
    StatusPublicerad - 2013
    MoE-publikationstypA1 Tidskriftsartikel-refererad


    • Alkali chloride induced corrosion
    • High temperature corrosion
    • Low alloy steel
    • Stainless steel
    • Superheater corrosion

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