PIEZOELECTRIC ELEMENT AND ITS MANUFACTURING METHOD

Title:

PIEZOELECTRIC ELEMENT AND ITS MANUFACTURING METHOD

Document Type and Number:

Japanese Patent JP3512379

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a piezoelectric element, which has very high piezoelectric characteristic, is superior in vibration transfer characteristic between ceramic base material and a piezoelectric material, and can realize miniaturization and high density of an actuator and a sensor, and to provide a method for manufacturing the piezoelectric element.
SOLUTION: This piezoelectric element is provided with the ceramic base material 2, the piezoelectric material 1 composed of porcelain composition, and electrodes 3, which are connected electrically with the base material 2. The porcelain composition is PbMg1/3Nb2/3O3-PbZrO3-PbTiO3 three-component solid solution based composition, whose main component is shown by a formula (1) Pbx(Mgy/3Nb2/3)aTibZrcO3 (0.95≤x≤1.05, 0.8≤y≤1.0, a+b+c=1.00), and contains NiO of 0.05-10.0 wt.% in the total composition. The piezoelectric material 1 is fixed to the ceramics base material 2, directly or via the electrode 3.

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Inventors:

Kashiwaya, Toshikatsu

Application Number:

JP2000286115A

Publication Date:

March 29, 2004

Filing Date:

September 20, 2000

Export Citation:

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Assignee:

NGK INSULATORS LTD

International Classes:

C04B35/49; A61K31/167; A61K31/18; A61K31/192; A61K31/195; A61K31/235; A61K31/277; A61K31/341; A61K31/343; A61K31/357; A61K31/36; A61K31/381; A61K31/385; A61K31/40; A61K31/404; A61K31/4045; A61K31/417; A61K31/42; A61K31/426; A61K31/4402; A61K31/4406; A61K31/4409; A61K31/445; A61K31/4453; A61K31/47; A61K31/513; A61K31/5375; A61K31/655; A61P29/00; C04B35/493; C07C235/38; C07C237/20; C07C245/08; C07C255/60; C07C311/08; C07C311/16; C07C323/41; C07D207/34; C07D209/08; C07D209/14; C07D211/10; C07D211/26; C07D213/40; C07D215/12; C07D233/64; C07D239/52; C07D261/08; C07D265/30; C07D277/28; C07D295/12; C07D307/52; C07D307/91; C07D317/58; C07D319/18; C07D321/10; C07D333/20; C07D333/28; C07D333/58; C07D339/08; H01L41/09; H01L41/187; H01L41/22; H01L41/314; H01L41/316; H01L41/43; (IPC1-7): H01L41/09; C04B35/49; H01L41/187; H01L41/22

Attorney, Agent or Firm:

渡邉一平

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