Influence of organic additives on the corrosion of iron-based amorphous alloys in dilute sulfuric acid solution
Some N-containing or S-containing organic substances and some acetylenic alcohols were tested as inhibitors of the corrosive attack suffered by Fe-based metallic glasses in deaerated 0.1 N sulfuric acid (H{sub 2}SO{sub 4}) solution at 25 C. It was verified that the specific action these compounds exerted on the corrosion process of the amorphous alloys was similar to the one these compounds exerted on polycrystalline iron. The most efficient substances were those containing a sulfur atom with available lone pairs, which chiefly inhibited the anodic reaction of both metal specimens. Owing to the chemical and physical homogeneity of the amorphous alloy, the chemisorbed inhibitor film that formed on the glassy surface was more stable and protective than that formed on the polycrystalline iron.
- Research Organization:
- Univ. of Ferrara (IT)
- OSTI ID:
- 20013147
- Journal Information:
- Corrosion (Houston), Vol. 55, Issue 7; Other Information: PBD: Jul 1999; ISSN 0010-9312
- Country of Publication:
- United States
- Language:
- English
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