Pulse-managed plasma method for coating on internal surfaces of workpieces
US12037923B2 · kind B2 · utility
0Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2020 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Jun 8, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/611
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An article has a cavity defined by an inner surface, the cavity having a size such that a largest sphere placeable in the cavity has a diameter of less than 7 cm and a smallest sphere placeable in the cavity has a diameter of 0.5 mm; and a hard coating on the inner surface, the hard coating having a hardness between 18 to 100 GPa, the hard coating distributed on the inner surface such that a ratio of a coating thickness at a first region of the hard coating to that at a second region of the hard coating ranges from 0.75 to 1.33.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.