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AssigneeLockheed Martin Energy Systems, Inc.
InventorsDouglas H. Lowndes, Anthony J. Pedraza, Melvin J. DeSilva, Rajagopalan A. Kumar
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Methods for making strongly bonded metal-ceramic materials. The methods include irradiating a portion of the surface of the ceramic material with a pulsed ultraviolet laser having an energy density sufficient to effect activation of the irradiated surface of the ceramic material so that adhesion of metals subsequently deposited onto the irradiated surface is substantially increased. Advantages of the invention include (i) the need for only a small number of laser pulses at relatively low focused energy density, (ii) a smoother substrate surface, (iii) activation of the laser-treated surface which provides a chemical bond between the surface and a metal deposited thereon, (iv) only low temperature annealing is required to produce the strong metal-ceramic bond; (v) the ability to obtain strong adhesion between ceramic materials and oxidation resistant metals; (vi) ability to store the laser treated ceramic materials for later deposition of metals thereon.
A method for improving adhesion between an oxide-based ceramic material and metal deposited thereon comprising:
A process for adhering metal to a surface of a ceramic material comprising:
A method for preparing a surface of an oxide-based ceramic material for deposition of one or more metals thereon comprising irradiating at least a portion of a metal bonding surface of the oxide-based ceramic material wherein the irradiating is conducted with a pulsed ultraviolet laser for a period of time and at an energy density which is sufficient to initiate melting of the irradiated surface in order to decrease the surface roughness of the metal bonding surface and to provide a surface which forms chemical bonds with metal deposited thereon.
Dependencies are inferred from the claim text.