|
| Corrosion Behaviors of Stainless Steels in Simulated Poly Formaldehyde Unit Solution |
| Received:May 04, 2014 Revised:May 26, 2014 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2014.04.019 |
| KeyWord:poly formaldehyde unit stainless steel corrosion |
| Author | Institution |
| GUO Qiang |
China University of Petroleum, Beijing , China |
| YANG Yan-qin |
The 8607st Factory of the Fourth Academy of CASC, Xiaogan , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective Corrosion behaviors of 316L, 904L and 2507 stainless steels were studied in the simulated poly formaldehyde unit solution, in order to select a more advanced steel for the upgrade of poly formaldehyde unit. Methods Immersion tests were performed for the three types of steel in the simulated solution, pitting potential was measured using the potentiodynamic polarization technique, and the morphology and the phase of the corrosion layer were observed and analyzed. Results Pitting corrosion and selective phase corrosion of 316L stainless steel occurred in the simulated solution, and the corrosion products were mainly Fe-Cr ferritic phase and Fe2O3 hematite phase. Conclusion The results showed that owing to the lower corrosion rate and sensitization on pitting corrosion than 316L stainless steel, 904L stainless steel is expected to improve the corrosion resistance of the poly formaldehyde unit. |
| Close |
|
|
|