| Autor: |
Jie Pan, Ya-jing Ding, Rui-cheng Zhao, Jian Zhang, Yan Li |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Corrosion Communications, Vol 12, Iss , Pp 1-10 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2667-2669 |
| DOI: |
10.1016/j.corcom.2023.01.004 |
| Popis: |
Chitosan (CTS) as an environment-friendly biological macromolecule was applied to investigate its effect in improving the property of zirconium-based Cr(III) conversion coating on Zn-55Al-1.6Si coated steel sheet (Zn55Al). High-resolution transmission electron microscope gave the key evidence that CTS can effectively wrap the main film-forming substances and participate in the construction of Zr@CTS-TCC. A comparative analysis of electrochemical measurements showed that the addition of 0.2 g·L–1 CTS can improve the corrosion resistance of Zr@CTS-TCC and decrease the surface density of micro defects. Surface spectroscopy characterization provided a theoretical explanation for the role of CTS as an electron supplier in reduction of Cr(VI). Results demonstrate the potential of CTS as an environmentally friendly and effective cross-linking additive, which provides an alternative approach in developing next generation of trivalent chromium or chromium-free passivator for nonferrous alloy and their coatings. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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