Preparation method of spinel type PbAl2O4 ferroelectric ceramic powder
A ferroelectric ceramic and spinel-type technology, applied in the field of preparation of spinel-type PbAl2O4 ferroelectric ceramic powder, can solve the problems of large grain size, irregular shape, uneven distribution, etc., and achieve less operation steps, Easy to achieve, simple equipment requirements
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[0029] The invention discloses a spinel type PbAl 2 o 4 The preparation method of ferroelectric ceramic powder comprises the following steps:
[0030] S101. According to the sample molecular formula PbAl 2 o 4 Quantitative relationship of aluminum nitrate, lead nitrate and citric acid were weighed, then its nitrate was dissolved with distilled water and ethylene glycol mixed solution, stirred with a magnetic stirrer, after the nitrate was dissolved, mixed solution A was obtained;
[0031] S102. Add the complexing agent to the mixed solution A, and stir evenly to obtain the solution B;
[0032] S103. Heating the solution B in a water bath to cause a complex reaction between the metal ion and the complexing agent to form a sol;
[0033] S104. Transfer the formed sol to an oven at room temperature for further reaction to obtain a wet gel;
[0034] S105. Put an appropriate amount of wet gel into a corundum crucible, and place the crucible in a muffle furnace for calcination. ...
Embodiment 1
[0041] According to the sample molecular formula PbAl 2 o 4 Quantitative relationship Weigh aluminum nitrate, lead nitrate and citric acid, put the nitrate in a 50ml beaker, measure 4ml of deionized water and 6ml of ethylene glycol into the beaker with a measuring cylinder, stir with a magnetic stirrer for 5-10min Stir and dissolve the nitrate, and mix the two solutions after completely dissolving to obtain a mixed solution A; add the complexing agent to the mixed solution A, stir evenly to obtain a solution B; put the solution B into a water bath at 80°C , heated in a water bath for 4 hours to cause a complex reaction between the metal ion and the complexing agent to form a sol. The sol was transferred to an oven at 55°C for 14 days to fully react and form a gel. Place the wet gel in a corundum crucible, then put it into a muffle furnace for calcination, the calcination temperature is 650°C, the holding time is 8h, naturally cool to room temperature, take out and grind to o...
Embodiment 2
[0043] According to the sample molecular formula PbAl 2 o 4 Quantitative relationship Weigh aluminum nitrate, lead nitrate and citric acid, put the nitrate in a 50ml beaker, measure 10ml of deionized water with a measuring cylinder and pour it into the beaker, stir with a magnetic stirrer for 5-10min to stir the nitrate Dissolve, after completely dissolving, mix the two solutions to obtain mixed solution A; add complexing agent to mixed solution A, stir evenly to obtain solution B; put solution B in a water bath at 80°C, and heat in a water bath for 4 hours , so that the metal ion and the complexing agent undergo a complex reaction to form a sol. The sol was transferred to an oven at 55°C for 14 days to fully react and form a gel. Place the wet gel in a corundum crucible, then put it into a muffle furnace for calcination, the calcination temperature is 650°C, the holding time is 8h, naturally cool to room temperature, take out and grind to obtain PbAl 2 o 4 ceramic powder....
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