Zinc Phosphate Coatings on Non-Ferrous Substrates
The second series of coatings evaluated were applied with immersion or spray manganese-modified zinc phosphate solutions. Crystal size, with and without grain refinement, was consistent for both the spray and immersion processes along with complete coverage of the substrate. The grain refinement dip consistently provided finer crystalline structures and lower coating weights.
 5. IMMERSION COATING on zinc plating. Coating weight equals 541 mg/sq ft. |
 6. IMMERSION COATING with a titanium grain-refinement dip prior to phosphating. Coating weight equals 274 mg/sq ft. |
 7. SPRAYED COATING on zinc plating. Coating weight equals 633 mg/sq ft. |
 8. SPRAYED COATING with a grain-refinement treatment prior to phosphating. Coating weight equals 236 mg/sq ft. |
 9. IMMERSION C0ATING on G60 galvanize. Coating weight equals 537 mg/sq ft. |
 10. IMMERSION COATING with grain-refinement dip prior to phosphating. Coating weight equals 212 mg/ft. |
 11. SPRAYED COATING on galvanize. Coating weight equals 714 mg/ft. |
 12. SPRAYED COATING with grain refinement treatment prior to phosphating. Coating weight equals 243 mg/ft. |