Fracture-resistant self-lubricating wear surfaces
US10233934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2014 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Sep 6, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2223/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Fracture-resistant and self-lubricating wear surfaces are provided. In an implementation, a machine surface that is subject to wear is coated with or is constructed of a metallic nanostructure to resist the wear and to provide fracture-resistant hardness, built-in lubrication, and thermal conductivity for heat-sinking friction. The metallic nanostructured surface may be used, for example, on a face seal, bushing, bearing, thrust member, or hydraulic flow passage of an electric submersible pump. In an implementation, the metallic nanostructured surface is a nanocrystalline alloy including nanograin twins of a body-centered cubic (BCC), face-centered cubic (FCC), or hexagonal closest packed (HCP) metal. The nanostructured alloy may include atoms of copper, silver, gold, iron, nickel, palladium, platinum, rhodium, beryllium, magnesium, titanium, zirconium, or cobalt, and may provide more hardness and lubricity than diamond-like carbon coatings or carbides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.