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Title: Method for treating reactive metals in a vacuum furnace

Abstract

The invention is directed to a method for reducing the contamination of reactive metal melts in vacuum furnaces due to the presence of residual gaseous contaminants in the furnace atmosphere. This reduction is achieved by injecting a stream of inert gas directly over the metal confined in a substantially closed crucible with the flow of the gas being sufficient to establish a pressure differential between the interior of the crucible and the furnace atmosphere.

Inventors:
Issue Date:
OSTI Identifier:
4014073
Patent Number(s):
3915695
Assignee:
to U.S. Energy Research and Development Administration
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
NSA Number:
NSA-33-026587
Resource Type:
Patent
Resource Relation:
Patent File Date: 1974 Jan 01; Other Information: C22B60/04; C22B60/02; C22B34/00. Orig. Receipt Date: 30-JUN-76
Country of Publication:
United States
Language:
English
Subject:
N50220* -Metals, Ceramics, & Other Materials-Metals & Alloys-Preparation & Fabrication; 360101* -Materials-Metals & Alloys-Preparation & Fabrication; *METALS- VACUUM MELTING; CHEMICAL REACTION KINETICS; CONTROL; CONTROLLED ATMOSPHERES; CRUCIBLES; IMPURITIES; RARE GASES; VACUUM FURNACES

Citation Formats

Hulsey, W J. Method for treating reactive metals in a vacuum furnace. United States: N. p., 1975. Web.
Hulsey, W J. Method for treating reactive metals in a vacuum furnace. United States.
Hulsey, W J. Tue . "Method for treating reactive metals in a vacuum furnace". United States.
@article{osti_4014073,
title = {Method for treating reactive metals in a vacuum furnace},
author = {Hulsey, W J},
abstractNote = {The invention is directed to a method for reducing the contamination of reactive metal melts in vacuum furnaces due to the presence of residual gaseous contaminants in the furnace atmosphere. This reduction is achieved by injecting a stream of inert gas directly over the metal confined in a substantially closed crucible with the flow of the gas being sufficient to establish a pressure differential between the interior of the crucible and the furnace atmosphere.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1975},
month = {10}
}