Device delivering glass fibres with a reduced precious metal content
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United States of America Patent
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Dec 8, 2015
Grant Date -
Sep 18, 2014
app pub date -
Oct 2, 2012
filing date -
Oct 6, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a device delivering filaments of molten material, especially glass, by Joule heating using a power supply, comprising side plates, a bottom plate provided with nozzles for the flow of the molten material and optionally an upper screen, is characterized in that at least one of these parts capable of being in contact with the molten material is formed by:
- a solid part made of iron-based alloy having a melting point above 1450° C. that forms a substrate,a metal tie layer formed on at least one portion of the surface of the substrate,a ceramic layer covering the metal tie layer, the metal layer and the ceramic layer forming a diffusion barrier to the components of the alloy that forms the substrate, anda protective coating layer made of platinum or platinum alloy, deposited directly on the ceramic layer.
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