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Title: Method for adhesion of metal films to ceramics

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.
Inventors:
 [1];  [2];  [3];  [1]
  1. (Knoxville, TN)
  2. (Oak Ridge, TN)
  3. (Ithaca, NY)
Issue Date:
OSTI Identifier:
871297
Assignee:
Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5703341
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
method; adhesion; metal; films; ceramics; methods; strongly; bonded; metal-ceramic; materials; irradiating; portion; surface; ceramic; material; pulsed; ultraviolet; laser; energy; density; sufficient; effect; activation; irradiated; metals; subsequently; deposited; substantially; increased; advantages; pulses; relatively; focused; ii; smoother; substrate; iii; laser-treated; provides; chemical; bond; thereon; temperature; annealing; required; produce; strong; ability; obtain; oxidation; resistant; store; treated; deposition; metal films; chemical bond; metal film; substantially increased; energy density; ceramic material; laser pulses; laser pulse; ceramic materials; substrate surface; deposited thereon; ultraviolet laser; metal deposited; oxidation resistant; subsequently deposited; substantially increase; temperature annealing; temperature anneal; pulsed ultraviolet; metal deposit; resistant metal; ceramic mater; treated ceramic; subsequently deposit; density sufficient; /219/

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