Method for aluminizing a ferritic workpiece by coating it with an aqueous alumina slurry, adding a halide activator, and heating
US5208071A · kind A · utility
7Cited by
8References
3Claims
0Family size
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Key dates
| Filing date | Apr 24, 1992 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Apr 24, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C10/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved method for aluminizing a ferritic material by forming an aqueous aluminum slurry composition, applying the aqueous aluminum slurry composition to the ferritic material to form a coating, adding a halide activator to the coated ferritic material and heating the coated ferritic material to a temperature of about 1275.degree. F. to about 1300.degree. F. for approximately 24 hours. The use of the lower temperature thermal cycle minimizes the change in the mechanical properties of a steel substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.