Method for manufacturing a piezoelectric ceramic body
AssigneeSonavation, Inc.
InventorsDe Liufu, Louis Regniere
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Abstract
The present invention relates to a method of manufacturing a piezoelectric ceramic body and devices therefrom. The method comprises mixing a piezoelectric ceramic powder with a polymer binder and surfactant to form a slip mixture, casting the slip mixture into a mold and setting to the slip mixture in the mold to form a green body, cutting the green body to form a cut green body with an array of micron-sized ceramic elements and separation, and sintering the cut green body to form a sintered ceramic body. The sintered ceramic body can be further process to encasing in a polymer material to form a piezoelectric ceramic-polymer composite. The piezoelectric ceramic-polymer composite can be further processed to form devices such as acoustic transducers and sensors.
Claims30
A method of manufacturing a piezoelectric ceramic body comprising:
- mixing a ceramic powder, polymer binder and surfactant to form a slip mixture with a solids loading by weight:
- casting said slip mixture into a mold;
- setting the slip mixture in said mold to form a green body separating said green body from said mold;
- cutting said green body to form a cut green body with an array comprising a plurality of micron-size ceramic elements and separations;
- and
- sintering said cut green body to form a densified sintered body.
A method of manufacturing a piezoelectric ceramic composite for a device, comprising:
- mixing a piezoelectric ceramic powder, organic binder, and surfactant to form a slip wherein said slip has a solids loading of at least 90% by weight;
- casting said slip into a mold to form a green body;
- separating said green body from said mold;
- cutting said green body to form a cut green body with an array of micron-sized ceramic elements and separations;
- bisquing said cut green body to burn out said organic binder;
- sintering said cut green body to form a sintered ceramic body;
- and encasing said sintered ceramic body in a polymer material to form a ceramic-polymer composite.
Dependencies are inferred from the claim text.