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Piezoelectric/electrostrictive porcelain composition and its application

A ceramic composition, a technology of compression, applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., can solve the problem of difficulty in obtaining piezoelectric bodies, and achieve excellent piezoelectric/electrostrictive Effects of Features

Inactive Publication Date: 2006-04-05
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the present situation is that piezoelectric ceramics (or piezoelectric ceramic compositions) disclosed in JP-A No. It is difficult to obtain a larger displacement than the piezoelectric body obtained by using a PZT-based composition containing lead (Pb), and the PZT-based composition has to be said to have the best piezoelectric / electrostrictive properties. Composition is better

Method used

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  • Piezoelectric/electrostrictive porcelain composition and its application
  • Piezoelectric/electrostrictive porcelain composition and its application
  • Piezoelectric/electrostrictive porcelain composition and its application

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Embodiment 1～4、 comparative example 1

[0091] After forming and firing by using the printed circuit board lamination method, and then using yttrium oxide (Y 2 o 3 ) stabilized zirconia (ZrO 2 ) on a substrate (1.6×1.1mm×thickness 10μm), a lower electrode film (1.2×0.8mm×thickness 3μm) made of platinum (Pt) was formed by screen printing method, and heat treatment at 1300°C for 2 hours integrated with the substrate. A piezoelectric / electrostrictive ceramic composition represented by the composition formula shown in Table 1 was laminated on the lower electrode film with a size of 1.3×0.9 mm×15 μm in thickness by screen printing, and fired at 1200° C. for 3 hours. Furthermore, an upper electrode film (1.2 x 0.8 mm x thickness 0.5 μm) made of gold (Au) was laminated thereon by a screen printing method, and at the same time heat-treated to obtain a piezoelectric / electrostrictive film type element ( Embodiment 1~4, comparative example 1).

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Abstract

There is provided a piezoelectric / electrostrictive porcelain composition capable of manufacturing a piezoelectric / electrostrictive article or a piezoelectric / electrostrictive portion which exhibits superior piezoelectric / electrostrictive characteristics without containing lead (Pb). The piezoelectric / electrostrictive porcelain composition contains as a main component a binary solid solution represented by the general formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ (1-n)(Ag 1-a-b-c Li a Na b K c ) (Nb 1-x-y-z Ta x Sb y V z O 3 + nM 1 M 2 O 3 wherein 0 ‰¤ a ‰¤ 0.2, 0 ‰¤ b ‰¤ 0.95, 0 ‰¤ c ‰¤ 0.95, 0 < (1 - a - b - c) ‰¤ 1, 0 ‰¤ x ‰¤ 0.5, 0 ‰¤ y ‰¤ 0.2, 0 ‰¤ z ‰¤ 0.2, 0 ‰¤ (y+z) ‰¤ 0.3, 0 ‰¤ n ‰¤ 0.2, wherein in the general formula (1), M 1 and M 2 are combinations of metal elements which satisfy predetermined conditions.

Description

technical field [0001] The present invention relates to a piezoelectric / electrostrictive ceramic composition, a piezoelectric / electrostrictive body, and a piezoelectric / electrostrictive film type element, and more specifically, relates to being able to manufacture piezoelectric / electrostrictive ceramics exhibiting excellent performance. The piezoelectric / electrostrictive ceramic composition of the piezoelectric / electrostrictive body and the piezoelectric / electrostrictive film type element taking into account the environment while stretching and stretching characteristics, and the piezoelectric / electrostrictive ceramic composition using the piezoelectric / electrostrictive ceramic composition Piezoelectric / electrostrictive body, piezoelectric / electrostrictive film type element. Background technique [0002] Conventionally, a piezoelectric / electrostrictive element is known as an element capable of controlling minute displacement at an ultramicro level. In particular, a piezoele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/495H01L41/16H03H9/17B41J2/045H10N30/853
CPCC04B2235/3239C04B35/495C04B2235/3206C04B2235/3201C04B2235/3232C04B2235/3229C04B2235/3215C04B2235/326C04B2235/3251H01L41/0973C04B2235/3294H01L41/1873C04B2235/3279C04B2235/3203C04B2235/3291C04B2235/3258C04B2235/3224C04B2235/3255C04B2235/3236H10N30/2047H10N30/853H10N30/8542
Inventor 七泷努山口浩文柏屋俊克
Owner NGK INSULATORS LTD
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