General Electric Company

Other

Stanley M Antczak

Frederic F Ahlgren

Mohan Rajaram

Mark A Castelletti

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.

Quartz fusion crucible

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, the inner surface adjacent at least a melting zone of the furnace includes a substantially gas-tight barrier layer comprised of a material selected from rhenium, osmium, iridium, and mixtures thereof.

Quartz fusion furnace and method for forming quartz articles

A synthetic fused silica composition comprising silica and aluminum, wherein said aluminum is generally present in at least 7 parts per million and the composition has a viscosity of at least 10,poise.

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Chesterland, OH, United States of America

Stanley M Antczak