BNT-base lead-free electrostriction material with light-emitting characteristic and preparation method thereof
A technology of electrostrictive materials and luminescent properties, applied in the direction of luminescent materials, chemical instruments and methods, etc., to achieve good monochromaticity, broad application prospects, and excellent temperature stability
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Embodiment 1
[0071] The preparation chemical general formula is (1-x) (Bi 0.5 Na 0.5 )TiO 3 The BNT-based lead-free luminescent electrostrictive material of -xM-yR, wherein, M=(Ba 0.90 Ca 0.10 )(Ti 0.92 sn 0.08 )O 3 , R=Er, x=0.08, y=0.002, 0.004, 0.006, 0.008, 0.010.
[0072] By Bi 2 o 3 、Na 2 CO 3 、TiO 2 、BaCO 3 , CaCO 3 , SnO 2 and Er 2 o 3 (analytical pure) is raw material, by 0.92 (Bi 0.5 Na 0.5 )TiO 3 -0.08 (Ba 0.90 Ca 0.10 )(Ti 0.92 sn 0.08 )O 3 - The stoichiometric ratio (molar ratio) of Bi, Na, Ti, Ba, Ca, Sn and Er in yEr (y=0.002, 0.004, 0.006, 0.008, 0.010) Weigh the raw materials, use absolute ethanol as the medium and use ZrO 2 The balls are milled in a ball mill jar for 24 hours, wherein, the ball milling speed is 150-200 rpm, the mass ratio of the added zirconia balls to the ball abrasive is 1.5:1, and the mass ratio of the added anhydrous ethanol to the ball mill is 2.0:1. Then, dry, press into blocks and place in a closed Al 2 o 3 Crucible, pre...
Embodiment 2
[0077] The preparation chemical general formula is (1-x) (Bi 0.5 Na 0.5 )TiO 3 The BNT-based lead-free luminescent electrostrictive material of -xM-yR, wherein, M=(Ba 0.90 Ca 0.10 )(Ti 0.92 sn 0.08 )O 3 , R=Pr, x=0.08, y=0.002, 0.004, 0.006, 0.008, 0.010.
[0078] By Bi 2 o 3 、Na 2 CO 3 、TiO 2 、BaCO 3 , CaCO 3 , SnO 2 and Pr 6 o 11 (analytical pure) is raw material, by 0.92 (Bi 0.5 Na 0.5 )TiO 3 -0.08 (Ba 0.90 Ca 0.10 )(Ti 0.92 sn 0.08 )O 3 - The stoichiometric ratio (molar ratio) of Bi, Na, Ti, Ba, Ca, Sn and Pr in yPr (y=0.002, 0.004, 0.006, 0.008, 0.010) Weigh the raw materials, use absolute ethanol as the medium and use ZrO 2 The balls are milled in a ball mill jar for 24 hours, wherein, the ball milling speed is 150-200 rpm, the mass ratio of the added zirconia balls to the ball abrasive is 1.5:1, and the mass ratio of the added anhydrous ethanol to the ball mill is 2.0:1. Then, dry, press into blocks and place in a closed Al 2 o 3 Crucible, pr...
Embodiment 3
[0081] The preparation chemical general formula is (1-x) (Bi 0.5 Na 0.5 )TiO 3 - The BNT-based lead-free luminescent electrostrictive material of xM-yR, wherein, M=BaTiO 3, R=Er, x=0.07, y=0.002, 0.004, 0.006, 0.008, 0.010.
[0082] By Bi 2 o 3 、Na 2 CO 3 、TiO 2 、BaCO 3 and Er 2 o 3 (analytical pure) is raw material, by 0.92 (Bi 0.5 Na 0.5 )TiO 3 -0.07BaTiO 3 - The stoichiometric ratio (molar ratio) of Bi, Na, Ti, Ba and Er in yEr (y=0.002, 0.004, 0.006, 0.008, 0.010) Weigh the raw materials, use absolute ethanol as the medium and use ZrO 2 The balls are milled in a ball mill jar for 24 hours, wherein, the ball milling speed is 150-200 rpm, the mass ratio of the added zirconia balls to the ball abrasive is 1.5:1, and the mass ratio of the added anhydrous ethanol to the ball mill is 2.0:1. Then, dry, press into blocks and place in a closed Al 2 o 3 Crucible, pre-fired at 850 ° C for 4 h, and then put the pre-fired powder back into the ball mill jar, using abso...
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