| 发明名称 |
PIEZOELECTRIC PORCELAIN AND METHOD FOR PREPARATION THEREOF |
| 摘要 |
A piezoelectric porcelain substrate(1)which comprises a composition containing a perovskite type oxide(Na<sb>1−x−y−z</sb>K<sb> x</sb>Li<sb> y</sb> Ag<sb>z</sb>)(Nb<sb>1−w</sb>Ta<sb>w</sb>)O<sb>3</sb> and a tungsten bronze type oxide M(Nb<sb>1−v</sb>Ta<sb>v</sb>)<sb>2</sb>O<sb>6</sb>,wherein M is an element belonging to Group 2 of the long Periodic Table.The symbols x,y and z are preferably in the following ranges,respectively:0.1≤x≤0.9,0≤y≤0.2 and 0≤z≤0.05.The composition preferably contains the tungsten bronze type oxide in an amount of 5.3 mol % or less.The piezoelectric porcelain has a high Curie temperature,can be used over a wide range of temperature,can generate a great displacement and can be fired with ease,and further is excellent also from pollutant,environmental and ecological view points.
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| 申请公布号 |
WO02102738(A1) |
申请公布日期 |
2002.12.27 |
| 申请号 |
WO2002JP05966 |
申请日期 |
2002.06.14 |
| 申请人 |
TDK CORPORATION;NANAO, MASARU;MIYAUCHI, YASUHARU;ISHIYAMA, TAMOTSU;FURUKAWA, MASAHITO;MUROSAWA, SHOGO;GOKITA, YOSHIKO |
发明人 |
NANAO, MASARU;MIYAUCHI, YASUHARU;ISHIYAMA, TAMOTSU;FURUKAWA, MASAHITO;MUROSAWA, SHOGO;GOKITA, YOSHIKO |
| 分类号 |
C04B35/495;C04B35/638;H01L41/187;H01L41/43;(IPC1-7):C04B35/495 |
主分类号 |
C04B35/495 |
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