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Low-strain-rate modified zircon material and articles

A technology of zircon and refractory materials, applied in the field of refractory materials, can solve the problems of dimensional changes, limit the service life, etc., and achieve the effect of improving the creep rate

Inactive Publication Date: 2011-04-27
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even with such high-performance materials, isopipes can creep over time during operation, causing dimensional changes that limit their useful life

Method used

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  • Low-strain-rate modified zircon material and articles
  • Low-strain-rate modified zircon material and articles
  • Low-strain-rate modified zircon material and articles

Examples

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Embodiment Construction

[0043] Unless otherwise indicated, all numbers used in the specification and claims, such as those indicating weight percentages of components, dimensions, and values ​​of certain physical properties, should be understood to be in all cases to use the term "about ” to modify. It should also be understood that the precise numerical values ​​used in the specification and claims form another aspect of the invention. Efforts have been made to ensure the accuracy of the numerical values ​​disclosed in the examples. Any measured value, however, inherently contains certain errors necessarily resulting from the standard deviation found in its respective measurement technique.

[0044] As used herein, the use of the indefinite article "a" or "an" when describing the invention and claiming claims means "at least one" and should not be limited to "only one" unless there is Clear statement to the contrary. Thus, for example, reference to "a sintering aid" includes embodiments having tw...

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Abstract

A modified zircon-based refractory material comprising TiO2 and Y2O3 having a density in certain embodiments higher than 4.00 g cm-3, and method of making such zircon materials. The process involves the use of zircon particles having a multi-modal particle distribution curve in making the green body. The material exhibits an improved performance in creep rate. The invention is particularly useful for making zircon-based isopipes for fusion down-draw forming of glass sheet materials.

Description

[0001] Related Application Cross Reference [0002] This application claims U.S. Provisional Patent Application Serial No. 61 / 128233, entitled "LOW-STRAIN-RATE MODIFIED ZIRCON MATERIAL AND ARTICLES," filed May 20, 2008 based on the content of this document and is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to based on modified zircon (ZrO 2 ·SiO2 2 ) refractory material, products comprising the material, and methods of manufacture thereof. Specifically, the present invention relates to the use of TiO 2 and / or Y 2 o 3 Modified sintered zircon refractory material, isopipe and like articles made from the material, and sintering methods for making the material and the article. The present invention is suitable for use, for example, in the manufacture of refractory materials, in glass melting furnaces used in fusion downdraw processes for the manufacture of flat glass, in glass forming equipment such as isopipes. ...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/482C04B35/484C04B35/49C04B35/505C04B35/64
CPCC04B2235/5445C04B2235/3248C04B2235/5436C04B2235/3232C04B2235/3225C04B35/481C03B17/064
Inventor W·P·安迪葛M·J·贝內特
Owner CORNING INC
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