Method for realizing macroscopic super-lubrication by a matching pair of nano metal-coated steel balls and hydrogen-containing carbon films
US11927217B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jun 24, 2021 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Aug 10, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2223/70
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure discloses a method for realizing macroscopic super-lubrication by a matching pair of nano metal-coated steel balls and hydrogen-containing carbon films, which is based on the use of nano metal-coated steel balls and diamond-like films with a hydrogen content of 25-30% as the matching pair. Further, a tribochemical reaction occurs through the catalytic action of nano metal during the friction process to form a nano graphene transfer film with incommensurate contact at the contact interface to achieve macroscopic super-lubrication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.