Corrosion resistant coating system
Abstract
Abstract FERROUS METAL ARTICLES ARE PROVIDED HAVING IMPROVED RESISTANCE TO CORROSION IN HIGHLY SALINE AND/OR MARINE ATMOSPHERES, THE ARTICLES BEING CHARACTERIZED BY A PROTECTIVE DEPLEX COATING COMPRISED OF A SACRIFICIAL THERMALLY ALUMINIZED FERROUS METAL SURFACE IN A COMBINATION WITH A SPECIAL BARRIER TYPE NON-METALLIC OVERCOAT. ONE METHOD OF PROVIDING THE FOREGOING SYSTEM IS TO APPLY AN ADHERENT LAYER FROM A LIQUID OF A SOLUBLE SLICATE SALT OR COMPOUND ONTO A THERMALLY ALUMINIZED LAYER, THE SILICATE LAYER BEING PREFERABLY THEREAFTER CURED. IN A PEFERRED EMBODIMENT. A CONVERSION COATING IS APPLIED TO THE SILICATE LAYER AND CURED IN SITU TO FURTHER ENHANCE THE RESISTANCE TO CORROSION.
Inventors
- 👤 M Weinstein
- 👤 K Speirs
- 👤 R Baer
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |