| CHEN Liang,JIANG Ai-hua,DING Yi,MA Li-qun.Study on Environment-friendly Pickling and Passivation for Welded Pipes of 304 Stainless Steel[J],(6):85-87 |
| Study on Environment-friendly Pickling and Passivation for Welded Pipes of 304 Stainless Steel |
| Received:July 08, 2012 Revised:December 20, 2012 |
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| DOI： |
| KeyWord:stainless steel corrosion resistance passivation pitting corrosion |
| Author | Institution |
| CHEN Liang |
College of Materials Science and Engineering, Nanjing University of Technology, Nanjing , China |
| JIANG Ai-hua |
College of Materials Science and Engineering, Nanjing University of Technology, Nanjing , China |
| DING Yi |
College of Materials Science and Engineering, Nanjing University of Technology, Nanjing , China |
| MA Li-qun |
College of Materials Science and Engineering, Nanjing University of Technology, Nanjing , China |
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| Abstract: |
| Environment-friendly pickling and passivation process of welded pipes of 304 stainless steel was studied by means of orthogonal test, its passivation influence on welded pipes of 304 stainless steel was evaluated with electrochemical test.The best passivation formula selected from the orthogonal test is 3% citric acid, 5% hydrogen peroxide, 2. 5% absolute ethyl alcohol, 40 ℃, 30 min, and could obviously improve the pitting corrosion resistance of welded pipes of 304 stainless steel. |
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