|
| Corrosion Behaviors of Ferrous Metals Exposed to Yellow River Sanmenxia Reservoir of China |
| Received:September 30, 2016 Revised:February 15, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2017.02.011 |
| KeyWord:ferrous metal fresh water corrosion |
| Author | Institution |
| LIU Kai-ji |
1.Qingdao NCS Testing & Protection Technology Co. Ltd, Qingdao , China;2.Qingdao Marine Corrosion Research Institute, Qingdao , China |
| HUANG Gui-qiao |
1.Qingdao NCS Testing & Protection Technology Co. Ltd, Qingdao , China;2.Qingdao Marine Corrosion Research Institute, Qingdao , China |
| DING Guo-qing |
1.Qingdao NCS Testing & Protection Technology Co. Ltd, Qingdao , China;2.Qingdao Marine Corrosion Research Institute, Qingdao , China |
| YANG Hai-yang |
1.Qingdao NCS Testing & Protection Technology Co. Ltd, Qingdao , China;2.Qingdao Marine Corrosion Research Institute, Qingdao , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To obtain the corrosion results and corrosion behaviors of typical ferrous materials which were exposed to the Yellow River Sanmenxia Reservoir for a long period. Methods Exposure corrosion test was used. One kind of carbon steel, 3 kinds of low-alloy steel, and 3 kinds of stainless steel were exposed in the Sanmenxia Reservoir of the Yellow River for1a, 2a, 5a, and 8a. A metalloscope was used to measure the pitting, observe the corrosion morphology and calculate the corrosion rate of different materials. Results The corrosion behaviors of the carbon steel and the low-alloy steel were almost the same after they were exposed in the Sanmenxia Reservoir. The average corrosion rate of four steels exposed for 1 a was similar, it was 0.047~0.050 mm/a. The average corrosion rate of Q235B exposed for 1-8 a was 0.040 mm/a. The average corrosion rate of steel X70, X80 and D36 had little difference with Q235B, were 0.039, 0.034 and 0.037 mm/a respectively. What’s more, after 1 a of exposure, corrosion spots could be seen in the surface of 0Cr13, the deepest corrosion was 0.010mm; and after 8a of exposure, corrosion and holes could be seen in the corners of 0Cr13, and the deepest corrosion of both 304 and 316L was below 0.1 mm. Conclusion Corrosion behaviors of Q235B, X70, X80 and D36 exposed in the Yellow River Sanmenxia Reservoir are similar. The corrosion rate of steels exposed for 1a is high, but decreases after the first year. 304 and 316L have good corrosion resistance in the Yellow River Sanmenxia Reservoir, but 0Cr13 is corroded seriously in the river and is perforated after eight years. |
| Close |
|
|
|