Stabilized zirconia sintered body and zirconia powder
US-2024101482-A1 · Mar 28, 2024 · US
Dielectric ceramic composition and composite ceramic structure
US9505661B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9505661-B2 |
| Application number | US-201514854342-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 15, 2015 |
| Priority date | Mar 26, 2013 |
| Publication date | Nov 29, 2016 |
| Grant date | Nov 29, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Barium titanate (BaTiO 3 ) and barium zirconate (BaZrO 3 ) are made into a solid solution at a predetermined ratio. Specifically, a dielectric ceramic composition is represented by a basic composition (BaTiO 3 ) (1-X) (BaZrO 3 ) X (in the formula, X satisfies 0.70≦X≦0.95). More preferably, X satisfies 0.73≦X≦0.90 in this range. Such a dielectric ceramic composition may be integrated with alumina to form a composite ceramic structure.
First claim
Opening claim text (preview).
What is claimed is: 1. A dielectric ceramic represented by a basic composition (BaTiO 3 ) (1-X) (BaZrO 3 ) X , wherein X satisfies 0.70≦X≦0.95, and said dielectric ceramic has a withstand voltage of at least 30 kV/mm. 2. The dielectric ceramic according to claim 1 , wherein said dielectric ceramic is a solid solution of BaTiO 3 and BaZrO 3 . 3. The dielectric ceramic according to claim 1 , wherein X satisfies 0.73≦X≦0.90. 4. The dielectric ceramic according to claim 1 , wherein said dielectric ceramic has an average crystal grain size of 3 μm or less. 5. The dielectric ceramic according to claim 1 , wherein said dielectric ceramic has a relative density of 97% or more. 6. The dielectric ceramic according to claim 1 , wherein said dielectric ceramic has a relative dielectric constant of 43 to 170. 7. The dielectric ceramic according to claim 1 , wherein said dielectric ceramic has a thermal expansion coefficient of 7.8 ppm/K to 9.1 ppm/K. 8. A composite ceramic structure comprising the dielectric ceramic according to claim 1 integrated with alumina.
Assignees
Inventors
Classifications
Micrometer sized grains, i.e. from 1 to 100 micron · CPC title
Glass interlayers, e.g. frit or flux · CPC title
Alkaline earth titanates · CPC title
Density · CPC title
Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9505661B2 cover?
- Barium titanate (BaTiO 3 ) and barium zirconate (BaZrO 3 ) are made into a solid solution at a predetermined ratio. Specifically, a dielectric ceramic composition is represented by a basic composition (BaTiO 3 ) (1-X) (BaZrO 3 ) X (in the formula, X satisfies 0.70≦X≦0.95). More preferably, X satisfies 0.73≦X≦0.90 in this range. Such a dielectric ceramic composition may be integrated with alumi…
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification C04B35/49. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).