Doped and modified barium strontium calcium titanate heat-release pyroelectric ceramic material and preparation method thereof
A technology of pyroelectric ceramics and barium strontium titanate, which is applied in the field of barium strontium titanate calcium pyroelectric ceramic materials and its preparation, can solve the problems of dielectric and pyroelectric performance degradation, and achieve a large dielectric constant, The effect of simple process and high pyroelectric performance
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[0032] Example 1
[0033] First follow the general formula (Ba 0.6 Sr 0.3 Ca 0.1 ) 0.993 Y 0.007 Ti 0.999 Mn 0.001 O 3 Weigh the stoichiometric BaCO 3 , SrCO 3 , CaCO 3 , TiO 2 , Y 2 O 3 And MnCO 3 For each powder, the wet ball milling process is used to make all the powders evenly mixed; the mass ratio of ball milling material to ball milling medium and deionized water is 1:1.5:1.2, and the ball milling time is 18 hours. The ball milling medium is steel balls and zirconium. Ball or agate ball.
[0034] Drying, adding 10% by weight of the total powder deionized water, briquetting, and synthesizing in an atmospheric atmosphere, the synthesis temperature is 1100 ℃, the holding time is 2 hours, and the composition is (Ba 0.6 Sr 0.3 Ca 0.1 ) 0.993 Y 0.007 Ti 0.999 Mn 0.001 O 3 The powder; crushed, passed through a 40-mesh sieve, and then mixed uniformly by a wet ball milling process; the mass ratio of ball milling material to ball milling medium and deionized water is 1:1.8:0.7, and the...
Example Embodiment
[0042] Example 2
[0043] The difference between this embodiment and embodiment 1 is only: according to the general formula (Ba 0.6 Sr 0.3 Ca 0.1 ) 0.991 Y 0.009 Ti 0.999 Mn 0.001 O 3 Weigh the stoichiometric BaCO 3 , SrCO 3 , CaCO 3 , TiO 2 , Y 2 O 3 And MnCO 3 The powder.
[0044] The rest of the contents of this example are the same as those described in Example 1, and the performance test results of the prepared samples are shown in Table 1.
Example Embodiment
[0045] Example 3
[0046] The difference between this embodiment and embodiment 1 is only: according to the general formula (Ba 0.6 Sr 0.3 Ca 0.1 ) 0.995 Y 0.005 Ti 0.999 Mn 0.001 O 3 Weigh the stoichiometric BaCO 3 , SrCO 3 , CaCO 3 , TiO 2 , Y 2 O 3 And MnCO 3 The powder.
[0047] The rest of the contents of this example are the same as those described in Example 1, and the performance test results of the prepared samples are shown in Table 1.
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