Electrophoretic deposition of Pb(Ni1/3Nb2/3)O3-Pb(Zr,Ti)O3 thick film on Pt wire

0.2PbNi1/3Nb2/3-0.8Pb(Zr,Ti)O3 (PNN-PZT) thick films were deposited on Pt wire with the diameter of 50 μm by electrophoretic deposition (EPD) method. The EPD deposition times on the microstructures of PNN-PZT thick films were investigated. By optimizing the EPD process, the Pt wire can be uniformly wrapped with the PNN-PZT powders. During the sintering process, the as-deposited PNN-PZT/Pt wires were buried in the mixed powders of PbCO3 and ZrO2, and then sintered in the optimal temperature to get a dense microstructure. The piezoelectric properties of the thick films were characterized by scanning force microscopy (SFM) method. The results show that the PNN-PZT thick films prepared by EPD method have good piezoelectricity.