Thermal spray method for adhering a catalytic material to a metallic substrate
US5721188A · kind A · utility
59Cited by
19References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1995 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Jan 17, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C4/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for applying a coating of catalytic material onto a metallic substrate involves thermal spray deposition of refractory oxide particles directly onto the substrate, preferably to attain an undercoat having a surface roughness of Ra 3 or greater. The catalytic material may then be applied to the undercoated substrate in any convenient manner. In a particular embodiment, the metallic substrate is treated by grit blasting prior to the application of an undercoat principally containing alumina. The coated substrate can be used in the assembly of a catalyst member for the treatment of exhaust gases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.