Superlubricity coating containing carbon nanotubes
US11970764B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2020 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Oct 15, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for producing a structure containing an array of MWCNTs on a metal substrate, comprising: (i) subjecting a metal substrate to a surface oxidation process at a first elevated temperature in an oxygen-containing atmosphere and under a first reduced pressure; (ii) subjecting the metal substrate to a surface reduction process at a second elevated temperature in a reducing atmosphere and under a second reduced pressure of at least 0.01 atm and less than 1 atm to result in reduction of the surface of said metal substrate, wherein the reducing atmosphere contains hydrogen gas; (iii) subjecting the metal substrate to a third reduced pressure of no more than 0.1 atm; and (iv) contacting the metal substrate, while at the third reduced pressure and under an inert or reducing atmosphere, with an organic substance at a third elevated temperature for suitable time to produce the MWCNTs on the metal substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.