Electrochemical synthesis of ceramic films and powders
AssigneeUnion Oil Company of California
InventorsR. Tom Coyle, Jay A. Switzer
Life of this patent
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Abstract
Ceramic precursor compositions, such as metal hydroxides and oxides, are electrochemically deposited in a biased electrochemical cell. The cell typically generates hydroxide ions that precipitate metallic or semimetallic ions to form insoluble solids that may be separated from the cell, then dried, calcined and sintered to form a ceramic composition.
Claims16
A method for the production of a ceramic precursor composition, said method comprising the step of electrochemical deposition of a ceramic precursor composition in a biased electrochemical cell having a anode and a cathode wherein acid or base materials are electrochemically generated at the anode or cathode, respectively, of said cell and said acid or base materials reacting with starting materials in said electrochemical cell to produce an electrodeposited ceramic precursor composition.
A method for producing a ceramic precursor composition, said method comprising the following steps:
- (1) electrochemically generating acid or base materials at an anode or at a cathode respectively, of a biased electrochemical cell containing an anode compartment separated from a cathode compartment, said acid or base materials reacting with starting materials contained in said compartments to produce an electrodesposited ceramic precursor composition and (2) said electrochemically deposited ceramic precursor composition obtained in step (1) is dispersed and dried.
A method for producing a ceramic precursor composition, said method comprising the following steps:
- (1) electrochemically depositing a ceramic precursor composition in a cathode compartment of a biased electrochemical cell which contains an anode and anode compartment separated from a cathode and cathode compartment, said electrochemical cell generating a base material at the cathode in the cathode compartment and said ceramic precursor composition containing a metal oxide or metal hydroxide, (2) said electrochemically deposited ceramic precursor composition obtained in step (1) is dispersed and dried, and (3) said dispersed and dried ceramic precursor composition obtained in step (2) is compressed to a green body and sintered to produce a ceramic composition containing a metal oxide.
Dependencies are inferred from the claim text.