Fused materials with mismatched properties
AssigneeHoneywell Federal Manufacturing & Technologies, LLC
InventorsRachel Leigh Grodsky, Noah Michael Weyrauch, Richard K. Brow
Life of this patent
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Abstract
Systems and methods for creating glass and ceramic fibers comprising mixed properties are disclosed. In some embodiments, a first material and a second material are fused in a cane drawing process to generate fibers. The first material and the second material may comprise different coefficient of thermal expansion (CTE) properties. Upon heating and/or cooling the fused material, a first portion and a second portion of the fused material expand/contract at different rates generating/relieving stresses in the fused material. Furthermore, the first portion and second portion may be provided in contact with, or bonded to, various metals or other materials to produce hermetic seals.
Claims20
A fused fiber having a coefficient of thermal expansion (CTE) functional gradient, the fused fiber comprising:
- a first material having a first CTE;
- a second material having a second CTE distinct from the first CTE;
- and
- wherein the first material is provided at least partially surrounding the second material,
- wherein the first material and the second material have been heated and drawn, fusing the first material and the second material into the fused fiber.
A method of creating a fused material with a coefficient of thermal expansion (CTE) functional gradient, the method comprising:
- providing a first material having a first CTE;
- providing a second material having a second CTE distinct from the first CTE, wherein the first material is provided at least partially surrounding the second material,
- wherein the first material and the second material are selected from a set consisting of glass, ceramic, and glass ceramic;
- adding heat to the first material and the second material to fuse the first material to the second material;
- and
- drawing the first material and the second material into the fused material.
A fused cane providing a functional coefficient of thermal expansion (CTE) gradient, the fused cane comprising:
- a first material having a first CTE;
- a second material having a second CTE differing from the first CTE by no greater than 3×10−6 per degree Celsius, wherein the first material at least partially surrounds the second material;
- and
- an insert having a third CTE differing from the second CTE by no greater than 3×10−6 per degree Celsius, wherein the insert passes through the second material,
- wherein the first material and the second material have been heated and drawn, fusing the first material and the second material into the fused cane around the insert.
Dependencies are inferred from the claim text.