Research Article
Pitting Corrosion of the Resistance Welding Joints of Stainless Steel Ventilation Grille Operated in Swimming Pool Environment
Table 2
The results of chemical composition analysis at spot 1 (sediment) and spot 2 (metal surface) in Figure
5.
| | Element | Spot 1: sediment | Spot 2: base metal | | Concentration wt.% | Error % | Concentration wt.% | Error % |
| | Aluminium | 1.3 | 7.8 | - | - | | Calcium | 0.8 | 10.5 | - | - | | Carbon | 8.3 | 2.0 | 1.0 | 6.9 | | Chlorine | 5.3 | 3.0 | - | - | | Chromium | 2.1 | 7.4 | 16.8 | 2.3 | | Iron | 8.0 | 4.2 | 67.0 | 1.5 | | Magnesium | 0.9 | 13.5 | - | - | | Manganese | - | - | 1.9 | 10.5 | | Molybdenum | - | - | 1.8 | 13.1 | | Nickel | 2.0 | 12.6 | 10.3 | 5.2 | | Nitrogen | 11.0 | 3.6 | - | - | | Oxygen | 44.4 | 2.2 | - | - | | Phosphorus | 0.3 | 18.0 | 0.2 | 51.6 | | Potassium | 2.6 | 4.8 | - | - | | Silicon | 1.0 | 7.4 | 0.8 | 14.2 | | Sodium | 11.6 | 3.4 | - | - | | Sulfur | 0.5 | 12.9 | 0.2 | 16.4 |
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