Effects of chitosan inhibitor on the electrochemical corrosion behavior of 2205 duplex stainless steel
| Autor: | Sefei Yang, Chaofang Dong, Pan Yi, Ying Wen, Kui Xiao |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
macromolecular substances 02 engineering and technology 010402 general chemistry Electrochemistry 01 natural sciences Corrosion Chitosan chemistry.chemical_compound Adsorption Geochemistry and Petrology Materials Chemistry Corrosion behavior Polarization (electrochemistry) Mechanical Engineering fungi technology industry and agriculture Metals and Alloys equipment and supplies 021001 nanoscience & nanotechnology Electrochemical corrosion 0104 chemical sciences carbohydrates (lipids) chemistry Mechanics of Materials Duplex (building) 0210 nano-technology Nuclear chemistry |
| Zdroj: | International Journal of Minerals, Metallurgy, and Materials. 24:1260-1266 |
| ISSN: | 1869-103X 1674-4799 |
| DOI: | 10.1007/s12613-017-1518-y |
| Popis: | The effects of chitosan inhibitor on the corrosion behavior of 2205 duplex stainless steel were studied by electrochemical measurements, immersion tests, and stereology microscopy. The influences of immersion time, temperature, and chitosan concentration on the corrosion inhibition performance of chitosan were investigated. The optimum parameters of water-soluble chitosan on the corrosion inhibition performance of 2205 duplex stainless steel were also determined. The water-soluble chitosan showed excellent corrosion inhibition performance on the 2205 duplex stainless steel. Polarization curves demonstrated that chitosan acted as a mixed-type inhibitor. When the stainless steel specimen was immersed in the 0.2 g/L chitosan solution for 4 h, a dense and uniform adsorption film covered the sample surface and the inhibition efficiency (IE) reached its maximum value. Moreover, temperature was found to strongly influence the corrosion inhibition of chitosan; the inhibition efficiency gradually decreased with increasing temperature. The 2205 duplex stainless steel specimen immersed in 0.4 g/L water-soluble chitosan at 30°C displayed the best corrosion inhibition among the investigated specimens. Moreover, chitosan decreased the corrosion rate of the 2205 duplex stainless steel in an FeCl3 solution. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink