Theorie und Praxis des elektrochemischen Schutzes von Industrieanlagen

Gräfen, Hubert; Herbsleb, G.; Paulekat, F.; Schwenk, W.

doi:10.1002/maco.19710220104

Cited by 22 publications

(1 citation statement)

References 19 publications

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“…In contrast to the nitrate solutions, the intergranular stress corrosion cracking of unalloyed steels in sodium hydroxide solutions is limited to a relatively narrow range of critical potentials in the ac- tive/passive transition (3) and a strong potential dependency of the SCC susceptibility is observed in this potential range. The anodic limit of SCC in this medium enables anodic protection methods t o be used (8).…”

Section: Introductionmentioning

confidence: 99%

The effects of film formation and mechanical factors on the initiation of stress corrosion cracking of unalloyed steels in carbonate solutions

Wendler-Kalsch

1980

Materials & Corrosion

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Investigations into the intergranular stress corrosion cracking (SCC) of unalloyed steelSt36 in carbonate-bicarbonate solutions have shown that SCC susceptibility is limited to the potential range of magnetite formation for both constant load and constant strain rate tests. Experiments to determine the creep behaviour of the steel in the corrosive solution show that creep rates corresponding to the critical strain rates in the constant strain rate test occur during the crack initiation state after loading of the tensile specimen with a constant crack initiating load. These experimental findings establish, therefore, that critical crack initiating strain rates of the unalloyed steel are always present during the initial stage for SCC regardless of the test method used.The cause of crack initiation at grain boundaries can be attributed to the fact that the magnetite layers feature faults and grooves in the oxide along the grain boundaries in the entire critical potential range. These oxide grooves, which are also observed on unstressed steel, cause a notch-like localized corrosion attack. The depth and crack t i p radius of the resultant grain boundary notches appear to be sufficient to initiate propagating cracks under the single action o f predominately pure stresses without macroscopic deformation o f the steel. This does not necessarily mean, however, that a purely stress induced corrosion process is involved, for it is not out of question that the concentration of stress in the base o f grain boundary notches is sufficient to cause localized deformation processes required for crack initiation.

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Section: Introductionmentioning

confidence: 99%

The effects of film formation and mechanical factors on the initiation of stress corrosion cracking of unalloyed steels in carbonate solutions

Wendler-Kalsch

1980

Materials & Corrosion

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Corrosion

Gräfen

Horn

Schlecker

et al. 2000

Ullmann's Encyclopedia of Industrial Chemistry

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Corrosion, 3. Corrosion Protection and Testing

Gräfen

Horn

Schlecker

et al. 2011

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Corrosion Protection by Coating 1.1. Metal Coatings 1.2. Inorganic Nonmetallic Protective Coatings 1.2.1. Enamel 1.2.2. Brick Lining 1.2.3. Thermally Sprayed Coatings 1.3. Organic Lining and Coating Materials 1.3.1. Rubber Linings 1.3.2. Rubber ‐ Plastic Composite Linings 1.3.3. Linings Consisting of Thermally Crosslinkable Thermosetting Plastics 1.3.4. Reinforced Reaction Resin Coatings, Crosslinkable with Catalysts 1.3.5. Thermoplastic Linings 1.3.6. Paints and Powder Coatings 2. Inhibitors 3. Electrochemical Corrosion Protection 4. Corrosion Testing 4.1. Introduction 4.2. Test Methods

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Theorie und Praxis des elektrochemischen Schutzes von Industrieanlagen

Cited by 22 publications

References 19 publications

The effects of film formation and mechanical factors on the initiation of stress corrosion cracking of unalloyed steels in carbonate solutions

The effects of film formation and mechanical factors on the initiation of stress corrosion cracking of unalloyed steels in carbonate solutions

Corrosion

Corrosion, 3. Corrosion Protection and Testing

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