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US-9519269-B2 · Dec 13, 2016 · US
Method for fabrication of ceramic dielectric films on copper foils
US9679705B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9679705-B2 |
| Application number | US-201514631536-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2015 |
| Priority date | Jun 2, 2009 |
| Publication date | Jun 13, 2017 |
| Grant date | Jun 13, 2017 |
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Abstract
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The present invention provides copper substrate coated with a lead-lanthanum-zirconium-titanium (PLZT) ceramic film, which is prepared by a method comprising applying a layer of a sol-gel composition onto a copper foil. The sol-gel composition comprises a precursor of a ceramic material suspended in 2-methoxyethanol. The layer of sol-gel is then dried at a temperature up to about 250° C. The dried layer is then pyrolyzed at a temperature in the range of about 300 to about 450° C. to form a ceramic film from the ceramic precursor. The ceramic film is then crystallized at a temperature in the range of about 600 to about 750° C. The drying, pyrolyzing and crystallizing are performed under a flowing stream of an inert gas.
First claim
Opening claim text (preview).
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. An article of manufacture of comprising a lead-lanthanum-zirconium-titanium (PLZT) ceramic film on a copper substrate wherein the PLZT has a polycrystalline pervoskite phase without observable copper oxide peaks at 2θ of 29.2 and 36.2 as determined by X-ray diffraction (XRD) analysis; wherein the PLZT has a composition with the empirical formula Pb 0.92 La 0.08 Zr 0.52 Ti 0.48 O 3 . 2. The article of manufacture of claim 1 , wherein the copper substrate comprises a copper foil having a thickness in the range of about 0.01 mm to about 1 mm. 3. A capacitor comprising the article of manufacture of claim 1 .
Assignees
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Classifications
Heating rate · CPC title
Coating not provided for in groups C23C2/00 - C23C24/00 · CPC title
Oxides, e.g. ceramics · CPC title
Alkoxides, e.g. methoxide, tert-butoxide · CPC title
Deposition of multilayers of inorganic material · CPC title
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- What does patent US9679705B2 cover?
- The present invention provides copper substrate coated with a lead-lanthanum-zirconium-titanium (PLZT) ceramic film, which is prepared by a method comprising applying a layer of a sol-gel composition onto a copper foil. The sol-gel composition comprises a precursor of a ceramic material suspended in 2-methoxyethanol. The layer of sol-gel is then dried at a temperature up to about 250° C. The dr…
- Who is the assignee on this patent?
- Uchicago Argonne Llc
- What technology area does this patent fall under?
- Primary CPC classification C04B35/491. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 13 2017 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).