Reducing the reflectance of a metallic surface

Reducing the reflectance of a metallic surface

A method of reducing the reflectance of a metallic surface 2 comprises immersing the surface in a liquid dielectric 5, causing electric current to flow from an electrode, eg. anode 6 in the dielectric to the surface and moving the electrode relative to the surface such that an area of the surface is...

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Hauptverfasser: BRIAN FREDERICK SMITH, JOHN EVANS
Format: Patent
Sprache:eng
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MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
TRANSPORTING
WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL
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creator BRIAN FREDERICK SMITH
JOHN EVANS
description A method of reducing the reflectance of a metallic surface 2 comprises immersing the surface in a liquid dielectric 5, causing electric current to flow from an electrode, eg. anode 6 in the dielectric to the surface and moving the electrode relative to the surface such that an area of the surface is roughened. This method produces surfaces having lower reflectance values than those produced by prior art methods eg. painting, chemical blacking. In addition, the liquid dielectric removes a proportion of the heat generated by this process, thereby rendering it suitable for use on low melting-point materials, eg. aluminium, which was not possible hitherto.
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subjects MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
TRANSPORTING
WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL
title Reducing the reflectance of a metallic surface
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