Method for removing volatile components from a ceramic article, and related processes
Abstract
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.
- Inventors:
-
- Schenectady, NY
- Waterford, NY
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 874332
- Patent Number(s):
- 6368525
- Assignee:
- General Electric Company (Schenectady, NY)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22C - FOUNDRY MOULDING
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- AC05-96OR22464
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 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; /264/
Citation Formats
Klug, Frederic Joseph, and DeCarr, Sylvia Marie. Method for removing volatile components from a ceramic article, and related processes. United States: N. p., 2002.
Web.
Klug, Frederic Joseph, & DeCarr, Sylvia Marie. Method for removing volatile components from a ceramic article, and related processes. United States.
Klug, Frederic Joseph, and DeCarr, Sylvia Marie. Tue .
"Method for removing volatile components from a ceramic article, and related processes". United States. https://www.osti.gov/servlets/purl/874332.
@article{osti_874332,
title = {Method for removing volatile components from a ceramic article, and related processes},
author = {Klug, Frederic Joseph and DeCarr, Sylvia Marie},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
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