| 发明名称 |
LEAD-FREE PIEZOCERAMIC MATERIAL BASED ON BISMUTH SODIUM TITANATE (BST) |
| 摘要 |
The invention relates to a lead-free piezoceramic material based on bismuth sodium titanate (BST) having the following parent composition: x(Bi0.5Na0.5)TiO3-yBaTiO3-zSrTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0≦z≦0.07 or x(Bi0.5Na0.5)TiO3-yBaTiO3-zCaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0<z≦0.05 or x(Bi0.5Na0.5)TiO3-y(Bi0.5K0.5)TiO3-zBaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0≦z<1, characterized by addition of a phosphorus-containing material in a quantity that gives a phosphorus concentration of from 100 to 2000 ppm in the piezoceramic material. |
| 申请公布号 |
US2016194249(A1) |
申请公布日期 |
2016.07.07 |
| 申请号 |
US201414909821 |
申请日期 |
2014.06.23 |
| 申请人 |
PI CERAMIC GMBH |
发明人 |
Hennig Eberhard;Kynast Antje;Töpfer Michael;Hofmann Michael |
| 分类号 |
C04B35/475;H01L41/43;H01L41/187;C04B35/626;H01L41/083 |
主分类号 |
C04B35/475 |
| 代理机构 |
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代理人 |
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| 主权项 |
1. A lead-free piezoceramic material based on bismuth sodium titanate (BST) of the fundamental composition
x(Bi0.5Na0.5)TiO3-yBaTiO3-zSrTiO3 with x+y+z=1 and 0<x<1, 0<y<1, 0≦z≦0.07 or
x(Bi0.5Na0.5)TiO3-yBaTiO3-zCaTiO3 with x+y+z=1 and 0<x<1, 0<y<1, 0≦z≦0.05 characterized by the addition of a phosphoric material in a quantity such that the concentration of phosphorus in the piezoceramic material is 250 to 2000 ppm, wherein the specification ppm (parts per million) relates to the mass of phosphorus in relation to the total mass of the piezoceramic composition. |
| 地址 |
Lederhose DE |
