Composite perovskite piezoelectric ceramics of PMMN quaternary system were prepared by cold-pressing and solid-phase sintering.Piezoelectric modulus and density of the samples were measured after polarization.X-ray di...Composite perovskite piezoelectric ceramics of PMMN quaternary system were prepared by cold-pressing and solid-phase sintering.Piezoelectric modulus and density of the samples were measured after polarization.X-ray diffraction analysis and SEM were used to prove the result that the major phase of the piezoelectric ceramic spectimen based on PZT is PZT phase,which is tetragonal system and P-4mm space group.展开更多
The piezoelectric ceramic transformer has been more and more widely applied in elec tronic devices of high voltage and small current due to its novel features in the high voltage field: very high voltage step-up ratio...The piezoelectric ceramic transformer has been more and more widely applied in elec tronic devices of high voltage and small current due to its novel features in the high voltage field: very high voltage step-up ratio, small in size, light in weight and non-metal material in use; it cannot be burnt while the load circuit is shorted, and broken down in high voltage field;展开更多
文摘Composite perovskite piezoelectric ceramics of PMMN quaternary system were prepared by cold-pressing and solid-phase sintering.Piezoelectric modulus and density of the samples were measured after polarization.X-ray diffraction analysis and SEM were used to prove the result that the major phase of the piezoelectric ceramic spectimen based on PZT is PZT phase,which is tetragonal system and P-4mm space group.
文摘The piezoelectric ceramic transformer has been more and more widely applied in elec tronic devices of high voltage and small current due to its novel features in the high voltage field: very high voltage step-up ratio, small in size, light in weight and non-metal material in use; it cannot be burnt while the load circuit is shorted, and broken down in high voltage field;
