Metallic mirrors formed from amorphous alloys

a technology of amorphous alloys and metal mirrors, applied in the field of metal mirrors, can solve the problems of increasing processing costs, severe shortcomings, and further complexity

Inactive Publication Date: 2009-05-07
CRUCIBLE INTPROP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0017]In still yet another embodiment of the invention, the amorphous alloy can

Problems solved by technology

Although silica-based glasses are broadly used in mirror applications, they have severe shortcomings due to their brittleness and extreme fragility.
Moreover, silica based glasses need a reflective coating, generally a deposited metallic layer, which increases the processing costs and causes further complexities.
However, the desired smoothness of the reflective surface cannot be readily achieved in metals.
The polycrystalline grain nature of the microstructure, the multi-phases (especially in high strength and hardness alloy formulations),

Method used

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Embodiment Construction

[0022]The current invention is directed to metallic mirrors made of bulk-solidifying amorphous alloys, the bulk-solidifying amorphous alloys providing ruggedness, lightweight structure, excellent resistance to chemical and environmental effects, and low-cost manufacturing for highly smooth reflecting surfaces. Another object of the current invention is a method of making metallic mirrors from such bulk-solidifying amorphous alloys.

[0023]Bulk solidifying amorphous alloys are a recently discovered family of amorphous alloys, which can be cooled at substantially lower cooling rates, of about 500 K / sec or less, and substantially retain their amorphous atomic structure. As such, they can be produced in thicknesses of 1.0 mm or more, substantially thicker than conventional amorphous alloys, which are typically limited to thicknesses of 0.020 mm, and which require cooling rates of 105 K / sec or more. U.S. Pat. Nos. 5,288,344; 5,368,659; 5,618,359; and 5,735,975, the disclosures of which are...

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Abstract

Metallic mirrors made of bulk-solidifying amorphous alloys, the bulk-solidifying amorphous alloys providing ruggedness, lightweight structure, excellent resistance to chemical and environmental effects, and low-cost manufacturing, and methods of making such metallic mirrors from such bulk-solidifying amorphous alloys are provided.

Description

FIELD OF THE INVENTION[0001]The present invention is directed to metallic mirrors made of bulk solidifying amorphous alloys and mirror systems comprising components made of bulk solidifying amorphous alloys.BACKGROUND OF THE INVENTION[0002]Mirrors are optical devices designed to reflect and / or collect light for certain purposes. For the purposes of this disclosure, light is defined as an electromagnetic wave, which includes, but is not limited to, the frequencies of visible light. The most critical aspect of the mirror is the reflecting surface, which must be extremely smooth. Generally, the surface roughness of the reflecting surface is at the order of the wavelength of the reflected light, and preferably less than the wavelength of the reflected light. For high performance mirrors, surface roughness values of less than about 3 nm “rms” are desired and for certain mirror applications, surface roughness values of less than about 0.5 nm “rms” are preferred. The reflecting surface can...

Claims

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Application Information

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IPC IPC(8): C22F1/00C22C45/00
CPCG02B5/0808C22C45/00
Inventor COLLIER, STEVEPEKER, ATAKAN
Owner CRUCIBLE INTPROP LLC
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