Process for making piezoelectric stacks
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United States of America Patent
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-
Mar 9, 1993
Grant Date -
N/A
app pub date -
Sep 28, 1990
filing date -
Sep 28, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for making piezoelectric solid state motor stack disks. The method includes the steps of preparing a piezoelectric ceramic powder; preparing a substantially cylindrical piezoelectric ceramic slug from the powder; and cutting the slug with an ID saw into disks of a predetermined thickness. The method further includes pressing the powder in a press at a pressure of between about 1500 psi and 6000 psi and firing the slug at a temperature of between about 1250.degree. C. and 1350.degree. C. for a period of between about 15 min. and 4 hours. The method also comprises the steps of cleaning the ceramic disks after slicing; and applying a conductive layer to a portion of facets of the disks prior to the assembly step.
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