Metal surfaces coated with molecular sieve for corrosion resistance
US6521198B2 · kind B2 · utility
1Cited by
23References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2000 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Dec 20, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24421
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Metal surfaces are protected against corrosion by a coating of molecular sieve, notably a zeolite or a phosphate-containing molecular sieve, rendered substantially non-porous by the retention (or addition) of a pore-filling member inside the voids of the molecular sieve crystal structure. Pore-filling agents convenient for use include species typically used as structure-directing agents in the synthesis of zeolites and other molecular sieves. A further aspect of the invention is a method of protecting a metal surface from corrosion by crystallizing a molecular sieve in situ on the metal surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.