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Near net fused silica articles and method of making

A technology of silica and glass products, which is applied in the field of crucibles for manufacturing silicon wafers and fused silica glass products, and can solve problems such as limiting electronic devices and low transmission loss

Inactive Publication Date: 2013-01-02
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

While the materials have higher heat resistance and lower transmission loss than PYROCERAM, their moisture permeability limits the ability of radomes made from this material to protect the electronics enclosed within them

Method used

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  • Near net fused silica articles and method of making
  • Near net fused silica articles and method of making
  • Near net fused silica articles and method of making

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Embodiment Construction

[0018] In the following description, the same reference numerals denote the same or corresponding parts in the several views shown in the drawings. It should also be understood that, unless otherwise indicated, terms such as "top", "bottom", "outward", "inward", etc. are convenient terms and should not be regarded as restrictive terms. In addition, whenever a group is described as containing at least one element of a group of elements and a combination thereof, it should be understood that the group may include any number of these listed elements in a single element or in combination with each other, or Mainly composed of them, or composed of them. Similarly, whenever a group is described as consisting of at least one element of a group of elements or a combination thereof, it should be understood that the group can consist of any number of these listed elements in the form of a single element or in combination with each other. composition. Unless otherwise specified, the rec...

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PUM

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Abstract

A near-net or net shape fused silica glass article, such as a radome. The article is formed by depositing silica soot onto a mandrel having a shape that corresponds to the shape of the fused silica glass article. In some embodiments, the mandrel is inductively heated to a temperature that is sufficient to consolidate or sinter the silica soot upon deposition onto the mandrel to form fused silica glass. The fused silica glass article may have an outer layer that is under compression and / or multiple layers comprising various dopants that can alter or affect physical, mechanical, electrical, and / or optical properties.

Description

[0001] Cross reference of related applications [0002] This application claims the priority of U.S. Provisional Application Serial No. 61 / 324502 ​​filed on April 15, 2010 according to 35 U.S.C. §119(e). Technical field [0003] The present invention relates to a near-net shape or net shape fused silica glass product. Specifically, the present invention relates to radar shields for missiles and other projectiles, and other fused silica glass products, such as crucibles for silicon wafers that have high strength and low thermal expansion at high temperatures. Background technique [0004] Hypersonic missiles travel through the atmosphere at speeds of Mach 5-7 and higher. The nose cone (also called the "radar shield") of this missile contains radar and other targeted sensors, such as infrared (IR) sensors. At such speeds, missile components may be exposed to temperatures of about 1400°C or higher for several minutes. Radar shields must maintain electrical and thermal performance un...

Claims

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Application Information

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IPC IPC(8): C03B19/01C03B19/14C03B20/00C03B19/06
CPCC03B2201/42C03B19/1453C03B2201/31C03B19/1492C03B2201/58F42B10/46F42B15/34Y10T428/131Y10T428/1317C03B19/01C03B19/06C03B19/14C03B20/00
Inventor D·霍托夫W·P·托马斯
Owner CORNING INC