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US 8,938,993 B2Granted
Glass strengthening and patterning methods
AssigneeUT-Battelle, LLC
InventorsDavid C. Harper, Andrew A. Wereszczak, Chad E. Duty
Life of this patent
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Abstract
High intensity plasma-arc heat sources, such as a plasma-arc lamp, are used to irradiate glass, glass ceramics and/or ceramic materials to strengthen the glass. The same high intensity plasma-arc heat source may also be used to form a permanent pattern on the glass surface—the pattern being raised above the glass surface and integral with the glass (formed of the same material) by use of, for example, a screen-printed ink composition having been irradiated by the heat source.
Claims14
A method comprising:
- strengthening an untreated glass sample by;
- providing a soda-lime silicate glass have a first surface comprising a tin side, a second surface comprising an air side and edges;
- providing a plasma-arc heat source capable of delivering a power density of at least 900 W/cm2 in less than one second;
- unidirectionally translating the glass under the plasma-arc heat source at a speed of 8 mm/s;
- irradiating the first surface of the glass with the plasma-arc heat source at a power density of 900 W/cm2;
- and
- quenching the glass following irradiation;
- thereby increasing an equibiaxial failure stress of the untreated glass by 25% or more and a uniaxial 4-point-bend failure stress of the untreated glass by 65% or more.
5 more elements
A method comprising:
- patterning a glass sample by;
- providing a soda-lime silicate glass have a first surface, a second surface and edges;
- forming a first pattern of graphitic ink on the first surface of the glass using a screen printing method;
- providing a plasma-arc heat source capable of delivering a power density of at least 900 W/cm2 in less than one second;
- unidirectionally translating the glass under the plasma-arc heat source at a speed of 8 mm/s;
- and
- irradiating the first surface of the glass with the plasma-arc heat source at a power density of 900 W/cm2 and substantially simultaneously evolving the ink thereby forming a second pattern on the first surface of the glass wherein the second pattern comprises a glass material raised from the first surface of the glass, the second pattern corresponding to the first pattern.
4 more elements
A method comprising:
- patterning a glass or glass ceramic sample by forming a first pattern of ink on a first surface of the glass;
- and
- irradiating the first surface of the glass with a plasma-arc heat source at a power density of 900 W/cm2 thereby forming a second pattern on the first surface of the glass wherein the second pattern comprises a glass material raised from the first surface of the glass, the second pattern corresponding to the first pattern.
Dependencies are inferred from the claim text.