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| MIGRATION OF VARIOUS ORGANIC ANIONS ANDTHEIR EFFECTS ON OCCLUDED CORROSION CELL |
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| 北京化工大学材料科学与工程学院 |
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Abstract Simulated occluded cells were used to study organic anions such as C12H25SO-4、C12H25C6H4SO-3 、 C12H23OO- migration and their effects on occluded corrosion of mil d steel (A3) in 001mol·L-1NaCl solution at 50℃It was found that they migrated into the occluded cell as anodic current passing the cell, the quanti ty of migration increased with the time and the concentration, the order of migr ation quantity was：C12H23OO- ＞C12H25C6H4SO-3 ＞C12H25SO-4 at a concentration of 001mol·L-1,whi le the migration quantity of them were same when the concentration were 0002 a nd 0005 mol·L-1They all can retard the migration of Cl-,and had the same effects on the migration of Cl- at the concentration of 0002 and 000 5mol·L-1,but it was the best when the concentration was 001mol·L-1 ,C12H23OO-,and C12H25C6H4SO-3 was the better They had no effect on the pH fall of the OCC solution.
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Received: 26 November 1999
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