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Catalytically Active Nanocomposite Coatings

A self-renewing, exceptionally hard and slick metal coating with excellent wear protection for use in multiple industries

Argonne National Laboratory

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Technology Marketing Summary

Automotive engines, gear boxes, and wind turbines already operate under harsh conditions. As future equipment designs evolve toward more compact, lighter-weight, and high-power-density analogs, lubricants are expected to provide better friction, wear, and scuffing performance; and longer intervals between oil changes. Although current lubricants include zinc dialkyldithiophosphate (ZDDP) and molybdenum dithiocarbamate (MoDTC) to enhance lubrication and wear properties, these additives interfere with the operation of catalytic converters and other aftertreatment devices, leading to pollution.

Description

Researchers at Argonne National Laboratory (Argonne) have developed a new breed of catalytically active, hard, and highly slick nanocomposite coatings consisting of metal alloys, including copper, nickel, palladium, and platinum. These metals are catalytically active at the temperatures at which such coatings are used in automotive and wind turbine and other applications, in breaking carbon-carbon bonds in oils and greases, and in depositing a hard carbon layer on top of the nanocomposite layer. The nanocomposite coating also incorporates an exceptionally hard grain structure made of metal borides, carbides, or nitrides. Structurally, the tribofilm formed during the use of the coatings is similar to diamond-like carbon, which nearly eliminates wear, and provides lower friction than the tribofilms resulting from formulated lubricants containing ZDDP. During use, Argonne’s nanocomposite coatings cause catalytic activity, which cracks long-chain hydrocarbon molecules in the lubricant to form a slick and highly protective (i.e., tolerates high wear and is scuff-resistant), ultra-low-friction carbon film on the coated surface. The nanocomposite coatings are fully developed as a concept and require minimal application-oriented evaluation to apply to a potential product. The technology is patented by Argonne. Argonne would like to partner with companies for completing the development and application of the technology.

Benefits

Catalytically active nanocomposite coatings are especially suitable for automotive and wind turbine applications and:

  • May be used in combination with oils without ZDDP and MoDTC and other SAPS
  • Improve the coefficient of friction between sliding surfaces
  • Improve scuffing performance simply with the base oil; may also be used in wind turbine gear boxes
Applications and Industries
  • Automotive
  • Heavy industry
  • Wind energy generation
  • Other industries

 

Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 9,255,238
Patent
9,255,238
Method to produce catalytically active nanocomposite coatings
A nanocomposite coating and method of making and using the coating. The nanocomposite coating is disposed on a base material, such as a metal or ceramic; and the nanocomposite consists essentially of a matrix of an alloy selected from the group of Cu, Ni, Pd, Pt and Re which are catalytically active for cracking of carbon bonds in oils and greases and a grain structure selected from the group of borides, carbides and nitrides.
02/09/2016
Issued
Technology Status
Development StageAvailabilityPublishedLast Updated
DevelopmentAvailable10/25/201610/25/2016

Contact ANL About This Technology

To: CJ Guron<partners@anl.gov>