Solid-state structures with volatile sintering aids, and methods for fabrication and use thereof
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Ceramic articles and methods of producing ceramic articles
US9034787B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9034787-B2 |
| Application number | US-47477109-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 29, 2009 |
| Priority date | May 29, 2009 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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- Title
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- Abstract
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Abstract
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A ceramic article may comprise a sintered phase ceramic composition comprising aluminum titanate (Al 2 TiO 5 ), zirconium titanate (ZrTiO 4 ), and a niobium-doped phase.
First claim
Opening claim text (preview).
We claim: 1. A ceramic article, comprising: a sintered phase ceramic composition comprising from about 60% to about 80% aluminum titanate (Al 2 TiO 5 ), from about 15% to about 35% zirconium titanate (ZrTiO 4 ), and a niobium-doped phase present in an amount ranging from greater than 0% to less than or equal to about 5%. 2. The ceramic article of claim 1 , further comprising an alkali washcoating on the sintered phase ceramic composition. 3. The ceramic article of claim 2 , wherein the alkali washcoating comprises potassium. 4. The ceramic article of claim 1 , wherein the sintered phase ceramic composition has a modulus of rupture greater than or equal to about 100 pounds per square inch. 5. The ceramic article of claim 1 , wherein the sintered phase ceramic composition has a modulus of rupture greater than or equal to about 250 pounds per square inch. 6. The ceramic article of claim 1 , wherein the sintered phase ceramic composition has a total porosity greater than or equal to about 25%. 7. The ceramic article of claim 1 , wherein the sintered phase ceramic composition has a total porosity greater than or equal to about 55%. 8. The ceramic article of claim 1 , wherein the sintered phase ceramic composition has a coefficient of thermal expansion in at least one direction that is less than or equal to about 10.0×10 −7 . 9. The ceramic article of claim 1 , wherein the ceramic article comprises a honeycomb structure. 10. The ceramic article of claim 1 , wherein the ceramic article comprises a catalyst substrate. 11. The ceramic article of claim 1 , wherein the ceramic article comprises a filter. 12. The ceramic article of claim 1 , wherein the ceramic article comprises a NOx trap.
Assignees
Inventors
Classifications
Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths · CPC title
Operations & Transport · mapped topic
containing also titanium oxide or titanates, e.g. lead zirconate titanate (PZT) · CPC title
characterised by specific heating conditions during heat treatment · CPC title
Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat) · CPC title
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Frequently asked questions
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- What does patent US9034787B2 cover?
- A ceramic article may comprise a sintered phase ceramic composition comprising aluminum titanate (Al 2 TiO 5 ), zirconium titanate (ZrTiO 4 ), and a niobium-doped phase.
- Who is the assignee on this patent?
- Boek Heather Debra, Dejneka Matthew John, Weller Mark Owen, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C04B35/462. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 19 2015 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).