Electrochemical corrosion mechanisms of nickel-aluminium bronze with different nickel contents using the rotating disc electrode
| Autor: | Fenfen Yang, Enyu Guo, Wei Wang, Tongmin Wang, Yanhua Zeng, Zongning Chen, Huijun Kang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
020209 energy General Chemical Engineering Inorganic chemistry chemistry.chemical_element 02 engineering and technology General Chemistry engineering.material 021001 nanoscience & nanotechnology Copper Cathodic protection Corrosion Anode Nickel chemistry Electrode 0202 electrical engineering electronic engineering information engineering engineering Aluminium bronze General Materials Science Bronze 0210 nano-technology |
| Zdroj: | Corrosion Science. 157:438-449 |
| ISSN: | 0010-938X |
| Popis: | The open circuit potential, cathodic and anodic polarisation characteristics of nickel-aluminium bronze (NAB) with different nickel contents in 3.5 wt.% NaCl solution were investigated under well-defined hydrodynamic conditions. The results showed that irreversible cathodic oxygen reduction reaction was under kinetic control, whereas the reversible anodic copper dissolution reaction was under mixed transport-kinetic control. The increase in Ni content decreased the total amounts of α phase and β' phase in the microstructures of NAB alloys, resulting in the decrease in both cathodic kinetic current and anodic current, and thus improved the corrosion resistance of NAB alloys under flowing conditions. |
| Databáze: | OpenAIRE |
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