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A method for producing metal-ceramic composite coatings to increase the characteristics of the substrate material mainly for; hardness, thermal conductivity & wear resistance.
About
A method for producing a metal-ceramic composite coating with an increased hardness on a substrate includes adding a sol of a ceramic phase to the plating solution or electrolyte. The sol may be added before and/or during the plating or coating and at a rate of sol addition controlled to be sufficiently low that nanoparticles of the ceramic phase form directly onto or at the substrate and/or that the metal-ceramic coating forms on the substrate with a predominantly crystalline structure and/or to substantially avoid the formation of nanoparticles of the ceramic phase, and/or agglomeration of particles of the ceramic phase, in the plating solution or electrolyte. The ceramic phase may be a single or mixed oxide, carbide, nitride, silicate, boride of Ti, W, Si, Zr, Al, Y, Cr, Fe, Pb, Co, or a rare earth element. The coating, other than the ceramic phase may comprise Ni, Ni—P, Ni—W—P, Ni—Cu—P, Ni—B, Cu, Ag, Au, Pd.
Key Benefits
Grain Refinement: nano-structured materials that are harder, less porous, and less susceptible to impact and corrosion. Dispersion Strengthening: secondary phase particles that reduce stress, cracking, erosion, and wear. Conductivity: <1% by weight of secondary material – no impact on electronic performance.
Applications
High-end applications in marine, electronics, aerospace and automotive require durable surfaces that will protect the component and provide outstanding performance.