Electrochemical properties and chemical passivity of etch-resistant surface films on steel

I. V. Karpenko; E. M. Gutman; A. K. Mindyuk

doi:10.1007/BF00715898

Electrochemical properties and chemical passivity of etch-resistant surface films on steel

I. V. Karpenko, E. M. Gutman, A. K. Mindyuk

Research output: Contribution to journal › Article › peer-review

Abstract

1. All the types of etch-resistant surface films studied are electropositive with respect to the underlying metal. The most electropositive potential was recorded for films of maximum thickness. 2. Adjacent steel surfaces with and without etch-resistant films form galvanic macro- and microcells in which the etch-resistant films act as cathodes. 3. The etch-resistant films can, under specified conditions, considerably reduce the corrosion rate of steel in acid media. For example, a 20% reduction in the corrosion rate for 40Kh steel specimens with type II surface films was recorded in tests in a 53% H₂SO₄ solution. 4. A tentative explanation (based on the results of X-ray diffraction and metallographic analyses) of the electrochemical and corrosion properties of etch-resistant films is offered. 5. An analogy is suggested between the action of etch-resistant surface films and porous cathodic coatings.

Original language	English
Pages (from-to)	115-121
Number of pages	7
Journal	Soviet Materials Science
Volume	1
Issue number	2
DOIs	https://doi.org/10.1007/BF00715898
State	Published - 1 Jan 1966
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1007/BF00715898

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title = "Electrochemical properties and chemical passivity of etch-resistant surface films on steel",

abstract = "1. All the types of etch-resistant surface films studied are electropositive with respect to the underlying metal. The most electropositive potential was recorded for films of maximum thickness. 2. Adjacent steel surfaces with and without etch-resistant films form galvanic macro- and microcells in which the etch-resistant films act as cathodes. 3. The etch-resistant films can, under specified conditions, considerably reduce the corrosion rate of steel in acid media. For example, a 20% reduction in the corrosion rate for 40Kh steel specimens with type II surface films was recorded in tests in a 53% H2SO4 solution. 4. A tentative explanation (based on the results of X-ray diffraction and metallographic analyses) of the electrochemical and corrosion properties of etch-resistant films is offered. 5. An analogy is suggested between the action of etch-resistant surface films and porous cathodic coatings.",

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AU - Karpenko, I. V.

AU - Gutman, E. M.

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N2 - 1. All the types of etch-resistant surface films studied are electropositive with respect to the underlying metal. The most electropositive potential was recorded for films of maximum thickness. 2. Adjacent steel surfaces with and without etch-resistant films form galvanic macro- and microcells in which the etch-resistant films act as cathodes. 3. The etch-resistant films can, under specified conditions, considerably reduce the corrosion rate of steel in acid media. For example, a 20% reduction in the corrosion rate for 40Kh steel specimens with type II surface films was recorded in tests in a 53% H2SO4 solution. 4. A tentative explanation (based on the results of X-ray diffraction and metallographic analyses) of the electrochemical and corrosion properties of etch-resistant films is offered. 5. An analogy is suggested between the action of etch-resistant surface films and porous cathodic coatings.

AB - 1. All the types of etch-resistant surface films studied are electropositive with respect to the underlying metal. The most electropositive potential was recorded for films of maximum thickness. 2. Adjacent steel surfaces with and without etch-resistant films form galvanic macro- and microcells in which the etch-resistant films act as cathodes. 3. The etch-resistant films can, under specified conditions, considerably reduce the corrosion rate of steel in acid media. For example, a 20% reduction in the corrosion rate for 40Kh steel specimens with type II surface films was recorded in tests in a 53% H2SO4 solution. 4. A tentative explanation (based on the results of X-ray diffraction and metallographic analyses) of the electrochemical and corrosion properties of etch-resistant films is offered. 5. An analogy is suggested between the action of etch-resistant surface films and porous cathodic coatings.

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Electrochemical properties and chemical passivity of etch-resistant surface films on steel

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