Lithium silicate glasses or glass ceramics, method for production thereof and use thereof
US-2015376053-A1 · Dec 31, 2015 · US
Process for producing a highly transparent impact-resistant glass ceramic
US9199873B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9199873-B2 |
| Application number | US-201213705577-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 5, 2012 |
| Priority date | Nov 13, 2008 |
| Publication date | Dec 1, 2015 |
| Grant date | Dec 1, 2015 |
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Abstract
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The process for producing a transparent lithium aluminosilicate glass ceramic plate includes ceramicizing a green glass body of the Li 2 O—Al 2 O—SiO 2 system using a ceramization program, which includes heating it, for the purpose of nucleation, to a temperature of 750° C.±20° C. and maintaining the temperature for 20±15 minutes, further heating the green glass body, for the purpose of ceramization, to a temperature of 900±20° C. and maintaining the to temperature for 20±15 minutes and then cooling to room temperature. The transparent plate has a thermal expansion coefficient (CTE) from −0.15×10 −6 /K to +0.15×10 −6 /K at 30 to 700° C. and a brightness value observed at an angle of 2° of ≧80 for a 4-mm thick plate for transmitted normal light.
First claim
Opening claim text (preview).
What is claimed is new and is set forth in the following appended claims: 1. A process for producing a transparent plate, said process comprising the following steps: a) preparing a green glass body comprising glass of a Li 2 O—Al 2 O—SiO 2 system; and b) using a ceramization program, said ceramization program comprising heating the green glass body, for the purpose of nucleation, to a nucleation temperature of 750±20° C. and holding said nucleation temperature for 20±15 minu…
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Operations & Transport · mapped topic
- C03C10/0027Primary
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
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- What does patent US9199873B2 cover?
- The process for producing a transparent lithium aluminosilicate glass ceramic plate includes ceramicizing a green glass body of the Li 2 O—Al 2 O—SiO 2 system using a ceramization program, which includes heating it, for the purpose of nucleation, to a temperature of 750° C.±20° C. and maintaining the temperature for 20±15 minutes, further heating the green glass body, for the purpose of cerami…
- Who is the assignee on this patent?
- Zachau Thilo, Siebers Friedrich, Schiffner Ulrich, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C03C10/0027. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 01 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).