| Autor: |
Al'khimenko, A. A., Davydov, A. D., Khar'kov, A. A., Mushnikova, S. Yu., Khar'kov, O. A., Parmenova, O. N., Yakovitskii, A. A. |
| Zdroj: |
Steel in Translation; Jan2022, Vol. 52 Issue 1, p27-32, 6p |
| Abstrakt: |
Shipbuilding steels and alloys can be subjected to various types of corrosion damage when exposed to sea water. For reliable long–term operation of ships and marine structures, despite the use of corrosion protection, materials are chosen that, alongside with the required mechanical properties, exhibit sufficient corrosion resistance to provide a preset service life. The evaluation of corrosion resistance for novel shipbuilding materials is performed using mandatory delivery trials based on methods repeatedly tested experimentally whose results are confirmed in practice. The set of studies on the corrosion resistance of steels and alloys is based on a step–by–step laboratory, bench, and field testing procedures. This review presents a brief description of laboratory corrosion testing methods being a part of mandatory delivery trials. Parameters determining the aggressive character of seawater as a corrosive medium, including salinity and oxygen content are considered. Laboratory testing methods including electrochemical studies with the determination of corrosion potential and rate, pitting potential from polarization curves, and the use of generally accepted gravimetric method for determining corrosion rate are presented. Units used for corrosion testing in moving seawater (with varying flow rate) are described. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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