Preparation method of Nd and Er co-doped CaBi8Ti7O27 ceramic and product of Nd and Er co-doped CaBi8Ti7O27 ceramic
A cabi8-x-yndxeryti7o27, co-doping technology, applied in the field of bismuth layered ceramics, can solve the problems of large dielectric loss at high temperature, not widely used, poor piezoelectric activity, etc., to improve the compactness and promote the piezoelectric performance. and ferroelectric properties, the effect of a simple preparation method
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[0027] A kind of Nd and Er co-doped CaBi of the present invention 8 Ti 7 o 27 The preparation method of pottery, described preparation method comprises the steps:
[0028] 1) CaCO with a purity greater than 99.0% 3 、 Bi 2 o 3 、TiO 2 、Nd 2 o 3 and Er 2 o 3 Dry at 80-100°C for 20-30 hours respectively;
[0029] 2) The raw material after step 1) is dried according to CaBi 8-x-y Nd x Er y Ti 7 o 27, where x=0.005~0.04, y=0.005~0.04 stoichiometric ratio is weighed, then put in the polyethylene ball mill jar and carry out ball milling with zirconia zirconium ball, described ball milling speed is 300~400r / min, ball milling The time is 20 to 30 hours, wherein the ball milling medium is absolute ethanol;
[0030] 3) After ball milling, dry the obtained mixed material in a vacuum oven at 65-85°C for 10-20 hours to remove ethanol, grind after drying, and pass the ground powder through an 80-mesh sieve;
[0031] 4) Calcinate the sieved powder in a muffle furnace at 800-90...
Embodiment 1
[0034] A kind of Nd and Er co-doped CaBi 8 Ti 7 o 27 The preparation method of pottery, described preparation method comprises the steps:
[0035] 1) CaCO with a purity greater than 99.0% 3 、 Bi 2 o 3 、TiO 2 、Nd 2 o 3 and Er 2 o 3 Dry at 90°C for 25 hours respectively;
[0036] 2) The raw material after step 1) is dried according to CaBi 7.98 Nd 0.01 Er 0.01 Ti 7 o 27 The stoichiometric ratio is weighed, and then placed in a polyethylene ball mill jar for ball milling with zirconium dioxide zirconium balls, the ball milling speed is 350r / min, and the ball milling time is 25h, wherein the ball milling medium is absolute ethanol;
[0037] 3) After the ball milling, dry the obtained mixed material in a vacuum oven at 80° C. for 18 hours to remove ethanol, grind after drying, and pass the ground powder through an 80-mesh sieve;
[0038] 4) The sieved powder was calcined in a muffle furnace at 850°C for 5h, the heating rate was 5°C, cooled to room temperature, and 5...
Embodiment 2
[0040] A kind of Nd and Er co-doped CaBi 8 Ti 7 o 27 The preparation method of pottery, described preparation method comprises the steps:
[0041] 1) CaCO with a purity greater than 99.0% 3 、 Bi 2 o 3 、TiO 2 、Nd 2 o 3 and Er 2 o 3 Dry at 80°C for 30 hours respectively;
[0042] 2) The raw material after step 1) is dried according to CaBi 7.96 Nd 0.02 Er 0.02 Ti 7 o 27 The stoichiometric ratio is weighed, and then placed in a polyethylene ball mill jar for ball milling with zirconium dioxide zirconium balls, the ball milling speed is 400r / min, and the ball milling time is 20h, wherein the ball milling medium is absolute ethanol;
[0043] 3) After ball milling, dry the obtained mixed material in a vacuum oven at 70° C. for 18 hours to remove ethanol, grind after drying, and pass the ground powder through an 80-mesh sieve;
[0044] 4) The sieved powder was calcined in a muffle furnace at 800°C for 6h, the heating rate was 4°C, cooled to room temperature, and 5% po...
PUM
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