Electric energy generation from ferroelectrics: Fabrication porous piezoceramic PZT95/5-2Nb by used PMMA granule

Document Type : Original Article

Abstract

In the manufacture of porous piezoelectric ceramics (Pb0.99 (Zr0.95Ti0.05)0.98Nb0.02O3) is usually used polymethyl methacrylate (PMMA) granules for the production of porosity. Creating porosity causes changes in electromechanical properties and reduces or increases some piezoelectric parameters. Adding PMMA from 0.6% to 2.2% reduces piezoelectric constant from 78.1 pC / N to 68 pC / N. It also provides a dielectric constant for polar components from 400 to 307. By increasing the porosity, the piezoelectric voltage constant increased from 9.96 ×10-3 V. m / N to 22.3×10-3, and then decreases. To the samples, a mechanical shock was applied to generation the voltage. The highest voltage achieved was 57.5 KV for samples containing 1% PMMA. The structural analysis of samples by TEM indicates the presence of coarse and regular crystals.

Keywords


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