Method of chromizing a workpiece by applying a coating containing chromium particles onto a ceramic carrier, positioning the carrier proximate the workpiece, and heating both carrier and workpiece to diffuse chromium particles into the workpiece
US5041309A · kind A · utility
16Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1990 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Feb 28, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C10/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved method of diffusion coating a workpiece, such as ferritic tubing employing a ceramic carrier provided with a diffusion composition. The diffusion composition includes a diffusion element such as chromium, silicon, aluminum, and boron. The carrier is subjected to an elevated diffusion temperature in a controlled environment to diffusion coat either the external or internal surface of the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.