Low-friction long-life ultra-lattice composite coating as well as preparation method and use thereof
US12291772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2023 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Dec 11, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C14/352
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A low-friction long-life ultra-lattice composite coating as well as a preparation method and use thereof are provided. The ultra-lattice composite coating includes a titanium transition layer, a TiNx bearing layer, a TiNx/MoS2 gradient transition layer, a MoS2/Me gradient transition layer and a MoS2/Me ultra-lattice layer which are successively formed on the surface of a matrix; wherein, in a direction gradually far away from the matrix, the content of MoS2 in the TiNx/MoS2 gradient transition layer is increasing, and the content of MoS2 in the MoS2/Me gradient transition layer is decreasing. The ultra-lattice composite coating has excellent mechanical property and tribological performance, with a vacuum friction coefficient being below 0.02 and a friction life exceeding 4×106 revolutions, which can meet the requirements on ultra-low friction and ultra-long service life for aerospace vehicles. Meanwhile, the preparation method is simple, stable and effective, and has prominent practical values and economic benefits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.