Research Article
Anticorrosive Performance of Zinc Phosphate Coatings on Mild Steel Developed Using Galvanic Coupling
Table 3
Loss in weight due to corrosion obtained for panels phosphated under galvanically coupled and uncoupled conditions evaluated by ARE salt droplet test.
| | System studied | Loss in weight* (g/m2) |
| | Uncoupled mild steel | 29.10 | | Mild steel coupled with stainless steel (area ratio of MS to SS—1 : 1) | 27.24 | | Mild steel coupled with stainless steel (area ratio of MS to SS—1 : 2) | 26.71 | | Mild steel coupled with stainless steel (area ratio of MS to SS—1 : 3) | 16.18 | | Mild steel coupled with nickel (area ratio of MS to Ni—1 : 1) | 25.55 | | Mild steel coupled with nickel (area ratio of MS to Ni—1 : 2) | 24.00 | | Mild steel coupled with nickel (area ratio of MS to Ni—1 : 3) | 23.25 | | Mild steel coupled with brass (area ratio of MS to brass—1 : 1) | 29.25 | | Mild steel coupled with brass (area ratio of MS to brass—1 : 2) | 18.00 | | Mild steel coupled with brass (area ratio of MS to brass—1 : 3) | 17.65 | | Mild steel coupled with copper (area ratio of MS to Cu—1 : 1) | 18.13 | | Mild steel coupled with copper (area ratio of MS to Cu—1 : 2) | 17.50 | | Mild steel coupled with copper (area ratio of MS to Cu—1 : 3) | 16.00 | | Mild steel coupled with titanium (area ratio of MS to Ti—1 : 1) | 13.00 | | Mild steel coupled with titanium (area ratio of MS to Ti—1 : 2) | 12.00 | | Mild steel coupled with titanium (area ratio of MS to Ti—1 : 3) | 10.05 |
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*Average of five determinations.
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