Preparation of lead-zirconium-titanium film and powder by electrodeposition

Patent · Sat Dec 31 23:00:00 EST 1994

OSTI ID:870135

Bhattacharya, Raghu N ^[1]; Ginley, David S ^[2]

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1. Littleton, CO
2. Evergreen, CO

A process for the preparation of lead-zirconium-titanium (PZT) film and powder compositions. The process comprises the steps of providing an electrodeposition bath, providing soluble salts of lead, zirconium and titanium metals to this bath, electrically energizing the bath to thereby direct ions of each respective metal to a substrate electrode and cause formation of metallic particles as a recoverable film of PZT powder on the electrode, and also recovering the resultant film as a powder. Recovery of the PZT powder can be accomplished by continually energizing the bath to thereby cause powder initially deposited on the substrate-electrode to drop therefrom into the bath from which it is subsequently removed. A second recovery alternative comprises energizing the bath for a period of time sufficient to cause PZT powder deposition on the substrate-electrode only, from which it is subsequently recovered. PZT film and powder so produced can be employed directly in electronic applications, or the film and powder can be subsequently oxidized as by an annealing process to thereby produce lead-zirconium-titanium oxide for use in electronic applications.

• Research Organization: Midwest Research Institute
• DOE Contract Number: AC36-83CH10093
• Assignee: Midwest Research Institute (Kansas City, MO)
• Patent Number(s): US 5462647
• OSTI ID: 870135
• Country of Publication: United States
• Language: English

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accomplished
alternative
annealing
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bath
compositions
comprises
continually
deposited
deposition
direct
directly
drop
electrically
electrode
electrodeposition
electrodeposition bath
electronic
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employed
energizing
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lead
lead-zirconium-titanium
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oxide
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period
powder
powder composition
preparation
process
process comprises
produce
produced
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pzt
recoverable
recovered
recovering
recovery
removed
respective
respective metal
resultant
resultant film
salts
soluble
soluble salt
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subsequently
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subsequently removed
substrate
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substrate-electrode
sufficient
therefrom
time
time sufficient
titanium
titanium metal
titanium oxide
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