The influence of dissolved ozone in a phosphate bath on phosphate coatings on carbon steel
The influence of dissolved ozone (O 3 ) and its concentrations on the formation of phosphate coatings on carbon steel in phosphate bath, as well as the protective properties of phosphate coatings in a 5 wt% NaCl solution have been studied. The structure, surface morphologies, and phase compositions...
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| Published in: | JCT research Vol. 6; no. 4; pp. 543 - 547 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Boston
Springer US
01-12-2009
Springer |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The influence of dissolved ozone (O
3
) and its concentrations on the formation of phosphate coatings on carbon steel in phosphate bath, as well as the protective properties of phosphate coatings in a 5 wt% NaCl solution have been studied. The structure, surface morphologies, and phase compositions of the phosphate coating on the carbon steel substrate was investigated by SEM, XRD. It is shown that the phosphate coating became more dense with fewer microholes and an increasing concentration of ozone in phosphate bath in the range of 0.0 to 1.62 mg/L. The coating compositions were Zn
3
(PO
4
)
2
· 4H
2
O (hopeite) and Zn
2
Fe(PO
4
)
2
· 4H
2
O. Potentiodynamic polarization and immersion tests were used to evaluate the corrosion properties of the treated samples. The coating showed good corrosion resistance properties. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 1547-0091 1935-3804 2168-8028 |
| DOI: | 10.1007/s11998-008-9159-8 |