Fabrication of Simple and Ring-Type Piezo Actuators and Their Characterization

Sahoo, B and Panda, PK (2012) Fabrication of Simple and Ring-Type Piezo Actuators and Their Characterization. Smart Materials Research . pp. 1-4.

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Abstract

A piezo multilayered stack of height 10mm is fabricated using 80 μm thick PZT tapes prepared by tape-casting technique. About 120 layers of thin tapes are dried, screen-printed with Pt-electrode paste, stacked, laminated, and then isopressed to obtain a green multilayered stack. Cofiring of the stack is carried out at 1250◦C for 1 h with very slow heating rate (15◦ per 1 h). The sintered stack is poled at 2 kV per mm in hot (120◦C) silicone oil bath for 45 minutes, and free displacement and block force were characterized. The actuator generates free displacement of 10 μm (0.1% strain) and block force of 1427N at 175V. In a similar way, a ring-shaped multilayered PZT stack was fabricated; the displacement was measured to be 8 μm. The ring-type actuator is mainly used for fluid flow control in space vehicles.

Item Type: Journal Article
Additional Information: Copyright to this article belongs to M/s. Hindawi Publishing Corporation
Uncontrolled Keywords: Piezo actuators;Pt-electrode paste;Lead zirconate titanate
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division
Depositing User: Ms. Alphones Mary
Date Deposited: 27 Apr 2012 09:56
Last Modified: 27 Apr 2012 09:56
URI: http://nal-ir.nal.res.in/id/eprint/10441

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