Piezoelectric ceramic, piezoelectric element, ultrasonic motor, and dust removing device
US-9240542-B2 · Jan 19, 2016 · US
Manufacturing method for piezoelectric ceramics
US2016104833A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016104833-A1 |
| Application number | US-201514961382-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 7, 2015 |
| Priority date | Dec 22, 2010 |
| Publication date | Apr 14, 2016 |
| Grant date | — |
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Abstract
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Provided are a barium titanate-based piezoelectric ceramics having satisfactory piezoelectric performance and a satisfactory mechanical quality factor (Q m ), and a piezoelectric element using the same. Specifically provided are a piezoelectric ceramics, including: crystal particles; and a grain boundary between the crystal particles, in which the crystal particles each include barium titanate having a perovskite-type structure and manganese at 0.04% by mass or more and 0.20% by mass or less in terms of a metal with respect to the barium titanate, and the grain boundary includes at least one compound selected from the group consisting of Ba 4 Ti 12 O 27 and Ba 6 Ti 17 O 40 , and a piezoelectric element using the same.
First claim
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1 - 6 . (canceled) 7 . A manufacturing method for a piezoelectric ceramics, comprising at least: producing granulating powder by adding a binder to barium titanate particles each comprising manganese at 0.04% by mass or more and 0.20% by mass or less in terms of a metal; and sintering a mixture prepared by adding at least one compound selected from the group consisting of Ba 4 Ti 12 O 27 particles and Ba 6 Ti 17 O 40 particles to the granulating powder. 8 . A manufacturing method for a piezoelectric ceramics, comprising at least: producing granulating powder by adding a binder to barium titanate particles each comprising manganese at 0.04% by mass or more and 0.20% by mass or less in terms of a metal; and sintering a mixture prepared by adding titanium oxide particles each having an average particle diameter of 100 nm or less to the granulating powder. 9 - 12 . (canceled)
Assignees
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Classifications
Electricity · mapped topic
- H01L41/43Primary
Electricity · mapped topic
Motors with ring stator · CPC title
MnO2 · CPC title
Organic acids, e.g. EDTA, citrate, acetate, oxalate · CPC title
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- What does patent US2016104833A1 cover?
- Provided are a barium titanate-based piezoelectric ceramics having satisfactory piezoelectric performance and a satisfactory mechanical quality factor (Q m ), and a piezoelectric element using the same. Specifically provided are a piezoelectric ceramics, including: crystal particles; and a grain boundary between the crystal particles, in which the crystal particles each include barium titanate …
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification H01L41/43. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Apr 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).