Low friction wear resistant graphene films

Patent metadata

Field	Value
Publication number	US-10745641-B2
Application number	US-201715428387-A
Country	US
Kind code	B2
Filing date	Feb 9, 2017
Priority date	Feb 9, 2017
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A low friction wear surface with a coefficient of friction in the superlubric regime including graphene and nanoparticles on the wear surface is provided, and methods of producing the low friction wear surface are also provided. A long lifetime wear-resistant surface including graphene exposed to hydrogen is provided, including methods of increasing the lifetime of graphene containing wear surfaces by providing hydrogen to the wear surface.

First claim

What is claimed:

1. A method of forming a low friction wear surface comprising:
disposing over a substrate a solution comprising nanodiamonds and a MoS 2 2D material to form a first sliding component;
sliding the first sliding component against a second sliding component having a diamond-like carbon on a sliding surface;
forming scrolls of the MoS 2 2D material around the nanodiamonds;
breaking down a portion of the MoS 2 2D material into molybdenum and sulfur; and
reacting the sulfur with the nanodiamonds converting the scrolled nanodiamonds into nano-onions, wherein the low friction wear surface exhibits a coefficient of friction of less than 0.01.

2. The method of claim 1 , further comprising establishing a dry environment over the substrate.

3. The method of claim 1 , wherein disposing the solution over the substrate comprises forming patches of the material on the substrate.

4. The method of claim 1 , wherein forming patches of the material on the substrate comprises spraying a liquid containing the material onto the substrate.

5. The method of claim 1 , wherein disposing the nanoparticles over the substrate comprises spraying a liquid containing the nanoparticles onto the substrate.

Assignees

• Uchicago Argonne Llc

Inventors

• Sumant Anirudha V
• Erdemir Ali
• Berman Diana

Classifications

• C10N2040/02

  Bearings · CPC title

• C10N2030/06

  Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title

• C09D1/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances · CPC title

• C10N2040/18

  in connection with recordings on magnetic tape or disc · CPC title

• C10N2040/17

  for electric contacts · CPC title