▎ 摘　　要

NOVELTY - Forming a low friction, wear-resistant seal assembly comprises: providing seal assembly components comprising a seal face substrate; suspending molybdenum disulfide in a carrier liquid to form a mixture; adding graphene oxide to the mixture, where the weight ratio of graphene oxide to molybdenum disulfide is 8:10-10:8; forming a homogenous mixture of molybdenum disulfide and graphene oxide, and optionally poly dopamine; and depositing the homogeneous mixture on a portion or all of the seal face substrate, forming a wet film on the seal face substrate, and evaporating the carrier liquid to form a dry coating layer. USE - The method is useful for forming a low friction, wear-resistant seal assembly which is useful: at an operating condition including an operating temperature of -50 to 200° C, and dry nitrogen having a dew point of ≯ -40° C; forming a low friction wear surface comprising disposing over a substrate a solution (all claimed); and as non-contacting seal or a dry gas seal. ADVANTAGE - The method produces seal assembly which can be readily applied, provides excellent lubricity and long lasting lubricity. DETAILED DESCRIPTION - INDEPENDENT CLAIMs are also included for: dry gas seal assembly (600) for use with a rotating machine includes a rotating shaft (604), comprising a mating ring having a mating ring seal face, a primary ring having a primary ring seal face, where the mating ring and primary ring are positioned so that the mating ring seal face and the primary ring seal face are adjacent and facing each other, and a first biasing member that urges the primary ring seal face toward the mating ring seal face, where at least one of the mating ring seal face and the primary ring seal faces includes recesses formed thereon that cause a gas to be drawn between the mating ring and the primary ring due to relative rotation between the primary ring and the mating ring and form a gas layer between the mating ring and the primary ring that urges the primary ring away from the mating ring where the at least one of the mating ring seal face and the primary ring seal face bears a solid coating comprising molybdenum disulfide, graphene oxide, and optionally poly dopamine, preferably where the graphene oxide to molybdenum disulfide ratio is 8:10-10:8; use of the seal assembly at an operating condition including an operating temperature of -50 to 200° C, and dry nitrogen having a dew point of ≯ -40° C; and forming a low friction wear surface comprising disposing over a substrate a solution comprising nanodiamonds and a two dimensional material comprising molybdenum disulfide and hexagonal boron nitride (h-BN) to form a first sliding component, sliding the first sliding component against a second sliding component having a diamond-type carbon on a sliding surface, forming scrolls of the material around the nanodiamonds, and converting the scrolled nanodiamonds into nano-onions. DESCRIPTION OF DRAWING(S) - The drawing shows a cross section view of a portion of the seal assembly of a dry gas seal. 600Seal assembly 602Optional retainer 604Rotating shaft 606Housing 610Outer wall