Physical vapor deposition (PVD), Coatings, Niobium Carbide, Niobium Carbonitrides, Nanocomposites, Nickel, Grain Refining
Industrial cutting or forming tools, as well as other wear-resistant mechanical components.
Need for harder, tougher, and coatings with properties that can be tailored according a given application, considering the wear mechanism, aiming at a better performance in tool applications.
This invention uses the traditional Physical Vapor Deposition method to create coatings with pure niobium carbide (NbC), niobium carbonitride (NbCN) and NbC particles distributed in a ductile nickel matrix. Hard coatings were produced by optimizing the PVD variables on sputtering NbC, as well as by creating a nanocomposite with grains of a few nanometer size when NbC and Ni were co-sputtered. Additions of N were used to control the hardness and the physical properties of NbC coatings.
US Patent Application 61/581438 filed on 12/29/2011
Rafael A Mesquita and Christopher A. Schuh, Niobium Carbide and Carbonitride Coatings Produced by Physical Vapor Deposition. To be submitted.
Rafael A Mesquita and Christopher A. Schuh, Nanocomposite PVD Coatings based on Niobium Carbide and Nickel. To be submitted.
Last revised: February 4, 2012