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Electrochemical studies on corrosion resistance of phosphate chemicalconversion coatings on low carbon steel API 5L grade B |
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| รหัสดีโอไอ | |
| Creator | 1. Vahid Asadi 2. Iman Danaee 3. Hadi Eskandari 4. Soudabeh Nikmanesh |
| Title | Electrochemical studies on corrosion resistance of phosphate chemicalconversion coatings on low carbon steel API 5L grade B |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2018 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 40 |
| Journal No. | 1 |
| Page no. | 147 |
| Keyword | annual-ring, leaf phenology, monthly wood increment, Melia azedarach, path analysis (PA) |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | Zinc phosphate chemical conversion coatings was formed on low carbon steel (API 5L grade B) from nitrate bathandthe corrosion performance of coatings was investigated using potentiodynamic polarization and electrochemical impedancespectroscopy studies. The characterization and composition of coatings were studied by SEM and EDSanalysis in differentimmersion times. The corrosion resistance in 3.5 %wt. NaCl solution increased in the presence of zinc phosphate conversioncoatings. The effect of immersion time and coating temperature were investigated on anti-corrosion behavior of coatings. Coatingtemperature indicated a significant effect in phosphate conversion coating and higher corrosion resistance was obtained with 70?C operating temperature. Also the experimental results showed the increase in corrosion resistance with increasing theimmersion time. This behavior can be due to the increase of the phosphate coating continuity and which formed on the surface.Surface analysis results indicated that uniform and continuous coating was obtained in agreement with electrochemicaltechniques. |
