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Title: 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:
 [1];  [2]
  1. (Schenectady, NY)
  2. (Waterford, NY)
Publication Date:
Research Org.:
LOCKHEED MARTIN ENERGY RES COR
OSTI Identifier:
874332
Patent Number(s):
US 6368525
Assignee:
General Electric Company (Schenectady, NY) ORNL
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 = {2002},
month = {1}
}

Patent:

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