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Glass with compressive surface for consumer applications

A technology of glass and compressive stress, which is used in the manufacture of glass that is basically not brittle, and in the field of chemical strengthening of glass by ion exchange, which can solve problems such as glass brittleness or micro-cracking

Active Publication Date: 2011-07-20
康宁陶瓷材料(上海)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for these applications, it is not desirable for the glass to be brittle or microcrack when subjected to impact

Method used

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  • Glass with compressive surface for consumer applications
  • Glass with compressive surface for consumer applications
  • Glass with compressive surface for consumer applications

Examples

Experimental program
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Embodiment Construction

[0014] In the following description, like reference numerals designate like or corresponding parts in the several views shown in the drawings. It should also be understood that terms such as "top", "bottom", "outwardly", "inwardly", etc. are words of general usage and are not to be regarded as terms of limitation unless otherwise indicated. Furthermore, whenever a group is described as containing at least one of a group of elements and combinations thereof, it should be understood that the group may contain any number of these listed elements individually or in combination with each other, or primarily Made of them, or made of them. Similarly, whenever a group is described as consisting of at least one of a set of elements or a combination of them, it is to be understood that the group may consist of any number of these listed elements, either individually or in combination . Unless otherwise stated, the recited numerical ranges include both the upper and lower limits of the...

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Abstract

The present invention provides a strengthened glass that does not exhibit frangible behavior when subjected to impact or contact forces, and a method of strengthening a glass. The glass may be strengthened by subjecting it to multiple, successive, ion exchange treatments. The multiple ion exchange treatments provide a local compressive stress maximum at a depth of the strengthened layer and a second local maximum at or near the surface of the glass.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application 61 / 079,995, filed July 11,2008. Background technique [0003] This application relates to strengthened glass. More specifically, the present invention relates to the chemical strengthening of glass by ion exchange. More specifically, the present invention relates to chemically strengthening glass by various ion exchange treatments. [0004] Glass can be chemically strengthened by ion exchange. In this method, metal ions present on the glass surface or in areas near the surface are exchanged for larger metal ions, usually by soaking the glass in a molten salt bath. The larger ions present in the glass strengthen the glass by creating compressive stress in regions near the surface. Tensile stresses are created in the central region of the glass, which balances the compressive stresses. If the tensile stress is too high, the glass can become britt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/085C03C3/093C03C21/00
CPCC03C3/093C03C21/002C03C3/085C03C4/00C03C21/00
Inventor D·C·埃兰A·J·埃利森S·戈麦斯
Owner 康宁陶瓷材料(上海)有限公司
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