Method and device for producing a controlled atmosphere with low oxygen partial pressure
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United States of America Patent
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Dec 25, 2001
Grant Date -
N/A
app pub date -
Jan 7, 2000
filing date -
Jul 7, 1997
priority date (Note) -
Expired
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Abstract
The present invention concerns a method for producing a controlled atmosphere having an oxygen partial pressure of below 10.sup.-13 Pa and an operating temperature above 1000.degree. C. According to the invention a furnace is vented by a gas mixture having an oxygen partial pressure lower than 10.sup.-8 Pa but higher than that of said controlled atmosphere, and that a partial volume of said furnace is submitted to a static electric field having a strength of at least 6V/cm and reducing the oxygen partial pressure in this partial volume by orders of magnitude. The invention also relates to a device for implementing this method.
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