Method for plasma-assisted and multi-step continuous preparation of diffusion layer/amorphous carbon film composite coating and use thereof
US12340982B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2023 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Aug 25, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/332
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure relates to the technical field of composite coating preparation, in particular to a method for plasma-assisted and multi-step continuous preparation of a diffusion layer/amorphous carbon film composite coating and use thereof. In the present disclosure, a high-temperature plasma carburizing/nitriding technology and a low-temperature plasma carbon coating technology are combined by a plasma activation technology with argon ion under gradient cooling, and the surface of a material is activated by multiple bombardment on the surface of the material with high-energy argon ions. In this way, a cluster-like porous and loose structure on a surface of the diffusion layer is removed. In summary, the multi-step continuous preparation of the diffusion layer/amorphous carbon film composite coating is formed based on an integrated technology of the high-temperature plasma diffusion with nitrogen/carbon ion and plasma activation with argon ion under gradient cooling and plasma coating with low-temperature carbon ion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.