Effect of CuO on the sintering temperature and piezoelectric properties of MnO2-doped 0.75Pb(Zr0.47Ti0.53)O3-0.25Pb(Zn1/3Nb2/3)O3 ceramics |
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| Authors: | Chan-Hee NamHwi-Yeol Park In-Tae SeoJae-Hong Choi Sahn Nahm Hyeung-Gyu Lee |
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| Affiliation: | a Department of Materials Science and Engineering, Korea University, 1-5 Ka, Anam-Dong, Sungbuk-Ku, Seoul 136-701, Republic of Korea
b Korea Electronics Technology Institute, 68 Yatap-dong, Bundang-gu, Soeongnam-si, Gyeonggi-do 463-816, Republic of Korea |
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| Abstract: | The sintering temperature of 0.75Pb(Zr0.47Ti0.53)O3-0.25Pb(Zn1/3Nb2/3)O3 ceramics containing 1.5 mol% MnO2 was decreased from 930 to 850 °C with the addition of CuO. The CuO reacted with the PbO and formed a liquid phase during the sintering, which assisted the densification of the specimens. Most of the Cu2+ ions existed in the CuO second phase, thereby preventing any possible hardening effect from the Cu2+ ions. Variations of the kp, Qm, ?3T/?0 and d33 values with CuO were similar to that of the relative density. The specimen containing 0.5 mol% CuO sintered at 850 °C showed the good piezoelectric properties of kp = 0.5, Qm = 1000, ?3T/?0 = 1750 and d33 = 300 pC/N. |
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| Keywords: | PZT Piezoelectric Low temperature sintering Microstructure High power transformer |
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