Development of corrosion flaws for the production of realistic test specimens
Autor: | J. Hodač, P. Mareš, Z. Fulín, J. Veselá, Ondřej Chocholatý |
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Jazyk: | čeština |
Rok vydání: | 2020 |
Předmět: |
010302 applied physics
Materials science Metallurgy Industrial chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Engineering (General). Civil engineering (General) 01 natural sciences Test (assessment) Corrosion 0103 physical sciences Production (economics) General Materials Science TA1-2040 0210 nano-technology |
Zdroj: | Koroze a Ochrana Materialu, Vol 64, Iss 1, Pp 23-28 (2020) |
ISSN: | 1804-1213 |
Popis: | To produce realistic test specimens with realistic flaws, it is necessary to develop appropriate procedure for corrosion flaw production. Tested specimens are made from steels commonly used in power plants, such as carbon steels, stainless steels and their dissimilar weldments. In this study, corrosion damage from NaCl water solution and NaCl water mist are compared. Specimens were tested with and without mechanical bending stress. The corrosion processes produced plane, pitting and galvanic corrosion. On dissimilar weldments galvanic corrosion was observed and resulted to the deepest corrosion damage. Deepest corrosion flaws were formed on welded samples. The corrosion rate was also affected by the solution flow in a contact with the specimens, which results in a corrosion-erosive wear. Produced flaws are suitable as natural crack initiators or as realistic corrosion flaws in test specimens. |
Databáze: | OpenAIRE |
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