Quartz fusion crucible
OwnerStanley M. Antczak, Mark A. Castelletti +1inventors
InventorsStanley M. Antczak, Mark A. Castelletti, Frederic F. Ahlgren
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Abstract
A crucible for melting a silica for fusion of said silica into a desired shape. The crucible having a main body with inner and outer surfaces comprised of a refractory material. In addition, at least a portion of the inner surface includes a barrier layer comprised of a material selected from rhenium, osmium, iridium, and mixtures thereof.
Claims14
A furnace for melting silica for fusion into a desired shape, said furnace comprising a body having a first layer comprised of a refractory material, and further including a barrier layer comprised of a protective material comprising rhenium, disposed on an inner surface of said first layer.
A furnace for melting silica, said furnace comprising:
- a body comprising:
- a first layer formed from a refractory material comprising tungsten, molybdenum, or a mixture thereof, and
- a barrier layer disposed on an inner surface of the first layer, the barrier layer being formed from a protective material selected from the group consisting of rhenium, osmium, iridium, and mixtures thereof which reduces contamination of the silica by the refractory material;
- and
- a heating source which heats the furnace to a temperature in excess of 2050° C.
Dependencies are inferred from the claim text.