Method for adhesion of metal films to ceramics

Patent · Tue Dec 31 23:00:00 EST 1996

OSTI ID:871297

Lowndes, Douglas H ^[1]; Pedraza, Anthony J ^[2]; DeSilva, Melvin J ^[3]; Kumar, Rajagopalan A ^[1]

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1. Knoxville, TN
2. Oak Ridge, TN
3. Ithaca, NY

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.

• Research Organization: LOCKHEED MARTIN ENRGY SYST INC
• DOE Contract Number: AC05-84OR21400
• Assignee: Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN)
• Patent Number(s): US 5703341
• OSTI ID: 871297
• Country of Publication: United States
• Language: English

Related Subjects

/219/
ability
activation
adhesion
advantages
annealing
bond
bonded
ceramic
ceramic mater
ceramic material
ceramic materials
ceramics
chemical
chemical bond
density
density sufficient
deposited
deposited thereon
deposition
effect
energy
energy density
films
focused
ii
iii
increased
irradiated
irradiating
laser
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laser pulses
laser-treated
material
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metal
metal deposit
metal deposited
metal film
metal films
metal-ceramic
metals
method
methods
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oxidation
oxidation resistant
portion
produce
provides
pulsed
pulsed ultraviolet
pulses
relatively
required
resistant
resistant metal
smoother
store
strong
strongly
subsequently
subsequently deposit
subsequently deposited
substantially
substantially increase
substantially increased
substrate
substrate surface
sufficient
surface
temperature
temperature anneal
temperature annealing
thereon
treated
treated ceramic
ultraviolet
ultraviolet laser