Method for removing volatile components from a ceramic article, and related processes

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874332

Klug, Frederic Joseph ^[1]; DeCarr, Sylvia Marie ^[2]

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1. Schenectady, NY
2. Waterford, NY

A method of removing substantially all of the volatile component in a green, volatile-containing ceramic article is disclosed. The method comprises freezing the ceramic article; and then subjecting the frozen article to a vacuum for a sufficient time to freeze-dry the article. Frequently, the article is heated while being freeze-dried. Use of this method efficiently reduces the propensity for any warpage of the article. The article is often formed from a ceramic slurry in a gel-casting process. A method for fabricating a ceramic core used in investment casting is also described.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-96OR22464
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 6368525
• OSTI ID: 874332
• Country of Publication: United States
• Language: English

Related Subjects

method
removing
volatile
components
ceramic
article
related
processes
substantially
component
green
volatile-containing
disclosed
freezing
subjecting
frozen
vacuum
sufficient
time
freeze-dry
frequently
heated
freeze-dried
efficiently
reduces
propensity
warpage
formed
slurry
gel-casting
process
fabricating
core
investment
casting
described
casting process
removing volatile
volatile component
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