A kind of piezoelectric ceramic and preparation method thereof
A technology of piezoelectric ceramics and ball milling, applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc. At the same time, it meets the requirements of specific indicators and other issues, and achieves the effect of excellent comprehensive piezoelectric performance and low price
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0022] ZnO and Nb 2 o 5 Mixing ball milling, drying and sieving, and sintering at 1200°C for 2 hours to synthesize ZnNb 2 o 6 Precursor. ZnNb 2 o 6 Precursor with Bi 2 o 3 , Yb 2 o 3 , PbO, TiO 2 , ZnO and Nb 2 o 5 According to 0.55 (0.35BiYbO 3 -0.65PbTiO 3 )-0.45Pb(Zn 1 / 3 Nb 2 / 3 )O 3 Weigh the molar ratio, add anhydrous ethanol to mix ball mill, dry and sieve, pre-burn at 750°C for 2h. Mix and ball-mill the pre-calcined block. Dry and add PVA to granulate, sieve and press into a green body with a diameter of 12mm and a thickness of about 1.5mm. The body was sintered at 1100°C for 2.5h. After sintering, the samples were ground, polished, silvered, and polarized in 140°C silicone oil with an electric field of 3kV / mm for 20min. After the polarized sample was placed at room temperature for 24 hours, its comprehensive electrical properties were tested: d 33 =94pC / N,Q m 142.152,T c =424°C, tanδ=0.007, its medium temperature spectrum is as follows figure 1 s...
Embodiment 2
[0024] ZnO and Nb 2 o 5 Mixing ball milling, drying and sieving, and sintering at 1250°C for 2 hours to synthesize ZnNb 2 o 6 Precursor. ZnNb 2 o 6 Precursor with Bi 2 o 3 , Yb 2 o 3 , PbO, TiO 2 , ZnO and Nb 2 o 5 According to 0.55 (0.35BiYbO 3 -0.65PbTiO 3 )-0.45Pb(Zn 1 / 3 Nb 2 / 3 )O 3 Weigh the molar ratio, add anhydrous ethanol to mix ball mill, dry and sieve, pre-burn at 750°C for 2h. Mix and ball-mill the pre-calcined block. Dry and add PVA to granulate, sieve and press into a green body with a diameter of 12mm and a thickness of about 1.5mm. The green body was sintered at 1050°C for 3h. After sintering, the samples were ground, polished and covered with silver, and then polarized with an electric field of 4kV / mm in silicone oil at 150°C for 20min. After the polarized sample was placed at room temperature for 24 hours, its comprehensive electrical properties were tested: d 33 =92pC / N,Q m =139.533, T c =421°C, tanδ=0.008.
Embodiment 3
[0026] ZnO and Nb 2 o 5 Mixing ball milling, drying and sieving, and sintering at 1230°C for 2 hours to synthesize ZnNb 2 o 6Precursor. ZnNb 2 o 6 Precursor with Bi 2 o 3 , Yb 2 o 3 , PbO, TiO 2 , ZnO and Nb 2 o 5 According to 0.85 (0.35BiYbO 3 -0.65PbTiO 3 )-0.15Pb(Zn 1 / 3 Nb 2 / 3 )O 3 Weigh the molar ratio, add anhydrous ethanol to mix ball mill, dry and sieve, pre-burn at 750°C for 2h. Mix and ball-mill the pre-calcined block. Dry and add PVA to granulate, sieve and press into a green body with a diameter of 12mm and a thickness of about 1.5mm. The body was sintered at 1100°C for 3h. After sintering, the samples were ground, polished and covered with silver, and then polarized with an electric field of 4kV / mm in silicone oil at 150°C for 20min. After the polarized sample was placed at room temperature for 24 hours, its comprehensive electrical properties were tested: d 33 =60pC / N,Q m =149.298,T c =432°C, tanδ=0.006.
PUM
| Property | Measurement | Unit |
|---|---|---|
| Curie point | aaaaa | aaaaa |
| Curie point | aaaaa | aaaaa |
| piezoelectric charge coefficient | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More