Anodic Polarization Behavior of Fe-Si Alloys in Sulfuric Acid Solutions

Crow, W. B.; Myers, James R.; Jeffreys, J. V.

doi:10.5006/0010-9312-28.3.77

Cited by 11 publications

(1 citation statement)

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“…Nevertheless high silicon cast alloy has the best behavior with a reduced active peak and a much more active passivation potential. Silicon superficial enrichment up to 6 to 7 wt, % has a deleterious effect on the anodic dissolution rate of iron, as already reported by others (2,13,14). A minimum of 10 to 12 wt.% of silicon is required to considerably improve the corrosion behavior of iron-silicon alloys.…”

Section: Electrochemical Testsmentioning

confidence: 49%

Chemical Vapor Deposition of Silicon Onto Iron and Steel Substrates: Oxidation and Corrosion Properties of Coated Materials

Klam¹,

Millet²,

Mazille³

et al. 1991

Materials and Manufacturing Processes

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The influence of the gaseous phase composition (SiH 4 or SiCI 4 diluted wnh argon or hydrogen), used for chemical vapor depesmon of silicon onto two c1ifferent substrates (pure iron or low chromium mild steal) is investigated. Depending on tie chosen process, two types of coatings are developed: either a very adherent, non-porous solid solution containing up to 6 to 7 wt. % SI, or a FesSi iron silicide (14.35 wt. %). The solid solution coating considerably improves the oxidation resistance properties of steels at temperatures up to 8OO'C. This beneficlal effect was not observed on the corrosion behavior of treated samples in suHuric acid solutions. In contrast, the FesSi iron silicide hall the same outstanding corrosion resistance that the silicon-rich cast alloys have in very severe environments such as boiling concentrated sulfuric acid. But this remarkable behavior ls certainly limned in other mediums by the open porosity of the coating, inherent to the chemical vapor process.

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Section: Electrochemical Testsmentioning

confidence: 49%

Chemical Vapor Deposition of Silicon Onto Iron and Steel Substrates: Oxidation and Corrosion Properties of Coated Materials

Klam¹,

Millet²,

Mazille³

et al. 1991

Materials and Manufacturing Processes

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Aqueous solution corrosion behaviour of “poor man” high manganese‐aluminum steels

Cavallini

Felli

Fratesi

et al. 1982

Materials & Corrosion

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The corrosion behaviour of high manganese (19.8 -32.5%)aluminum (7.1 -10.2%) austenitic steels in different aqueous solutions has been examined. Potentiodynamic tests in 1 N sulphuric acid solution show high current densities either in the active or in the passive region and the formation of a thick film which separates in activelpassive transition zone. Potentiodynamic tests in neutral buffer solution show a behaviour similar to that of the other ferrous alloys. Potentiodynamic tests in 1 N sodium hydroxide basic solution show a corrosion current density in the passive region related to the different manganese oxides higher than that of pure iron. The corrosion resistance of these steels is always worse than that of conventional grades austenitic stainless steels.

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The influence of copper, molybdenum and silicon on the corrosion electrochemical behavior of austenite chromium-nickel steel

Plaskeev

Fel'dgandler

2000

Prot Met

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Anodic Polarization Behavior of Fe-Si Alloys in Sulfuric Acid Solutions

Cited by 11 publications

References 0 publications

Chemical Vapor Deposition of Silicon Onto Iron and Steel Substrates: Oxidation and Corrosion Properties of Coated Materials

Chemical Vapor Deposition of Silicon Onto Iron and Steel Substrates: Oxidation and Corrosion Properties of Coated Materials

Aqueous solution corrosion behaviour of “poor man” high manganese‐aluminum steels

The influence of copper, molybdenum and silicon on the corrosion electrochemical behavior of austenite chromium-nickel steel

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