Low friction wear resistant graphene films
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.
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.