TY - JOUR
T1 - Effect of ZnO and CuO on the sintering temperature and piezoelectric properties of a hard piezoelectric ceramic
AU - Ahn, Cheol Woo
AU - Song, Hyun Cheol
AU - Nahm, Sahn
AU - Priya, Shashank
AU - Park, Seung Ho
AU - Uchino, Kenji
AU - Lee, Hyeung Gyu
AU - Lee, Hwack Joo
PY - 2006/3
Y1 - 2006/3
N2 - Hard piezoelectrics with high dielectric and piezoelectric constants are used for high-power applications. However, the sintering temperature of these ceramics is high, around 1200°C, restricting the usage of cheap base metal electrodes in fabrication of multi-layer components. This study investigates the effect of CuO and ZnO on the sintering temperature of a hard piezoelectric, APC 841, which is a MnO 2- and Nb 2O 5-modified PZT. The addition of CuO decreased the sintering temperature through the formation of a liquid phase. However, the piezoelectric properties of the CuO-added ceramics sintered at ≤950°C were lower than the desired values. The addition of ZnO resulted in a significant improvement in the piezoelectric properties. This enhancement was attributed to the formation of a homogeneous microstructure with large grains. The APC 841+0.2 wt% CuO+1.1 wt% ZnO ceramics sintered at 950°C showed excellent piezoelectric and dielectric properties with values of k p=0.532, Q m=750, d 33=351 pC/N, ε 33/ε o=1337, and T c=280°C.
AB - Hard piezoelectrics with high dielectric and piezoelectric constants are used for high-power applications. However, the sintering temperature of these ceramics is high, around 1200°C, restricting the usage of cheap base metal electrodes in fabrication of multi-layer components. This study investigates the effect of CuO and ZnO on the sintering temperature of a hard piezoelectric, APC 841, which is a MnO 2- and Nb 2O 5-modified PZT. The addition of CuO decreased the sintering temperature through the formation of a liquid phase. However, the piezoelectric properties of the CuO-added ceramics sintered at ≤950°C were lower than the desired values. The addition of ZnO resulted in a significant improvement in the piezoelectric properties. This enhancement was attributed to the formation of a homogeneous microstructure with large grains. The APC 841+0.2 wt% CuO+1.1 wt% ZnO ceramics sintered at 950°C showed excellent piezoelectric and dielectric properties with values of k p=0.532, Q m=750, d 33=351 pC/N, ε 33/ε o=1337, and T c=280°C.
UR - http://www.scopus.com/inward/record.url?scp=33644687171&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33644687171&partnerID=8YFLogxK
U2 - 10.1111/j.1551-2916.2005.00823.x
DO - 10.1111/j.1551-2916.2005.00823.x
M3 - Article
AN - SCOPUS:33644687171
SN - 0002-7820
VL - 89
SP - 921
EP - 925
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 3
ER -