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Title: Directly susceptible, noncarbon metal ceramic composite crucible

Abstract

A sintered metal ceramic crucible suitable for high temperature induction melting of reactive metals without appreciable carbon or silicon contamination of the melt. The crucible comprises a cast matrix of a thermally conductive ceramic material; a perforated metal sleeve, which serves as a susceptor for induction heating of the crucible, embedded within the ceramic cast matrix; and a thermal-shock-absorber barrier interposed between the metal sleeve and the ceramic cast matrix to allow for differential thermal expansions between the matrix and the metal sleeve and to act as a thermal-shock-absorber which moderates the effects of rapid changes of sleeve temperature on the matrix.

Inventors:
 [1];  [2];  [3];  [4]
  1. (Farragut, TN)
  2. (Oak Ridge, TN)
  3. (Kingston, TN)
  4. (Pattersonville, NY)
Publication Date:
Research Org.:
LOCKHEED MARTIN ENERGY RES COR
OSTI Identifier:
872726
Patent Number(s):
US 5997802
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
directly; susceptible; noncarbon; metal; ceramic; composite; crucible; sintered; suitable; temperature; induction; melting; reactive; metals; appreciable; carbon; silicon; contamination; melt; comprises; cast; matrix; thermally; conductive; material; perforated; sleeve; serves; susceptor; heating; embedded; thermal-shock-absorber; barrier; interposed; allow; differential; thermal; expansions; moderates; effects; rapid; changes; reactive metals; differential thermal; active metal; ceramic material; ceramic composite; thermal expansion; reactive metal; thermally conductive; conductive ceramic; metal ceramic; induction heating; sintered metal; perforated metal; induction melting; temperature induction; ceramic mater; active metals; crucible comprises; /266/373/432/

Citation Formats

Holcombe, Jr., Cressie E., Kiggans, Jr., James O., Morrow, S. Marvin, and Rexford, Donald. Directly susceptible, noncarbon metal ceramic composite crucible. United States: N. p., 1999. Web.
Holcombe, Jr., Cressie E., Kiggans, Jr., James O., Morrow, S. Marvin, & Rexford, Donald. Directly susceptible, noncarbon metal ceramic composite crucible. United States.
Holcombe, Jr., Cressie E., Kiggans, Jr., James O., Morrow, S. Marvin, and Rexford, Donald. Fri . "Directly susceptible, noncarbon metal ceramic composite crucible". United States. https://www.osti.gov/servlets/purl/872726.
@article{osti_872726,
title = {Directly susceptible, noncarbon metal ceramic composite crucible},
author = {Holcombe, Jr., Cressie E. and Kiggans, Jr., James O. and Morrow, S. Marvin and Rexford, Donald},
abstractNote = {A sintered metal ceramic crucible suitable for high temperature induction melting of reactive metals without appreciable carbon or silicon contamination of the melt. The crucible comprises a cast matrix of a thermally conductive ceramic material; a perforated metal sleeve, which serves as a susceptor for induction heating of the crucible, embedded within the ceramic cast matrix; and a thermal-shock-absorber barrier interposed between the metal sleeve and the ceramic cast matrix to allow for differential thermal expansions between the matrix and the metal sleeve and to act as a thermal-shock-absorber which moderates the effects of rapid changes of sleeve temperature on the matrix.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

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