PROTECTION OF PURE IRON AGAINST HIGH-TEMPERATURE OXIDATION USING METABORATE AND METASILICATE COATINGS

HUSAIN Z.

CORROSION, vol.49, no.4, pp.290-293, 1993 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 4
  • Publication Date: 1993
  • Doi Number: 10.5006/1.3316051
  • Journal Name: CORROSION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Agricultural & Environmental Science Database, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, Environment Index, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.290-293
  • Middle East Technical University Affiliated: No

Abstract

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.