Piezoelectric and mechanical properties of Pb(Zr0.52Ti0.48)O3–Pb(Y2/3W1/3)O3 (PZT–PYW) ceramics |
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| Authors: | SEOK-JIN YOON JONG H MOON HYUN-JAI KIM |
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| Affiliation: | (1) Division of Ceramics, Korea Institute of Science and Technology, Kwang-Joo, 500-757, Republic of Korea;(2) Department of Inorganic Materials Engineering, College of Engineering, Chonnam National University, Kwang-Joo, 500-757, Republic of Korea |
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| Abstract: | The piezoelectric and mechanical properties of hot-pressed PZT–PYW were investigated. As the Pb(Y2/3W1/3)O3 concentration increased, the piezoelectric constant (d 33) also increased up to a concentration of 3 mol% PYW reaching a value of 485×10-12 CN-1, but beyond this concentration it continuously fell. A decrease in grain size with increasing Pb(Y2/3W1/3)O3 content in the system changed the transgranular fracture mode to an intergranular fracture mode, resulting in an enhancement in K 1c from 0.83 MPam1/2 at 1 mol% PYW to 1.1 MPam1/2 at 3 mol% PYW. Consequently, the highest d 33 and K 1c values were obtained at the composition 0.97Pb(Zr0.52Ti0.48) O3–0.03Pb(Y2/3 W1/3)O3. This revised version was published online in November 2006 with corrections to the Cover Date. |
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