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Lead-free PTCR (Positive Temperature Coefficient Resistor) piezoelectric ceramic material and preparation method thereof
The invention discloses a lead-free PTCR (Positive Temperature Coefficient Resistor) piezoelectric ceramic material and a preparation method thereof, and belongs to the field of a lead-free electronic ceramic material. The composition general formula of the lead-free PTCR piezoelectric ceramic material is (Na0.5Bi0.5)x1(Ba1-x1-x2A2) Ti1-yByO3+zmol%M, wherein x1 is greater than or equal to 0.08 and less than or equal to 0.6, x2 is greater than or equal to 0 and less than or equal to 0.2, y is greater than or equal to 0 and less than or equal to 0.05, z is greater than or equal to 0 and less than or equal to 3, the element A is one or more of Sr, Ca, Y, La and Bi, the element B is one or more of Zr, Sn, Mn, Cu, Nb and Sb, and M is one or more of oxides Al2O3, SiO2, TiO2, BaO and B2O3. According to the preparation method, a high-pressure technology is firstly adopted, the ceramic sample is prepared by sintering under the pressure condition of 4.5 GPa, the preparation period is short, and the technology is simple and controllable; and the material is stable in property and good in repeatability, can be used for industrially ultrasonic testing, underwater acoustic detection, a piezoelectric transducer, an ultrasonic motor, a display device, an electronic control multicolor filter, a sensor and the like and is widely applicable to the fields of electronic information, space equipment, medical health, household appliances and the like.
Lead-free PTCR (Positive Temperature Coefficient Resistor) piezoelectric ceramic material and preparation method thereof
The invention discloses a lead-free PTCR (Positive Temperature Coefficient Resistor) piezoelectric ceramic material and a preparation method thereof, and belongs to the field of a lead-free electronic ceramic material. The composition general formula of the lead-free PTCR piezoelectric ceramic material is (Na0.5Bi0.5)x1(Ba1-x1-x2A2) Ti1-yByO3+zmol%M, wherein x1 is greater than or equal to 0.08 and less than or equal to 0.6, x2 is greater than or equal to 0 and less than or equal to 0.2, y is greater than or equal to 0 and less than or equal to 0.05, z is greater than or equal to 0 and less than or equal to 3, the element A is one or more of Sr, Ca, Y, La and Bi, the element B is one or more of Zr, Sn, Mn, Cu, Nb and Sb, and M is one or more of oxides Al2O3, SiO2, TiO2, BaO and B2O3. According to the preparation method, a high-pressure technology is firstly adopted, the ceramic sample is prepared by sintering under the pressure condition of 4.5 GPa, the preparation period is short, and the technology is simple and controllable; and the material is stable in property and good in repeatability, can be used for industrially ultrasonic testing, underwater acoustic detection, a piezoelectric transducer, an ultrasonic motor, a display device, an electronic control multicolor filter, a sensor and the like and is widely applicable to the fields of electronic information, space equipment, medical health, household appliances and the like.
Lead-free PTCR (Positive Temperature Coefficient Resistor) piezoelectric ceramic material and preparation method thereof
LI YONG (author) / TAN DEBIN (author) / SHI WEI (author) / LENG SENLIN (author) / HUANG SHUAI (author)
2015-06-10
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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