CORROSION, vol.49, no.4, pp.290-293, 1993 (SCI-Expanded)
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Middle East Technical University Affiliated:
Sodium metaborate and metasilicate coatings protect pure iron in the temperature range 800 to 1,000-degrees-C. Metaborate and metasilicate inhibit oxidation. Protective vonsenite (4FeO x Fe2O3 x B2O3) forms with metaborate, and protective fayalite (2FeO x SiO2) forms with metasilicate. It is proposed that noncoherent blocking layers of these compounds effectively decrease the interface area for iron ion diffusion.