Directly susceptible, noncarbon metal ceramic composite crucible
Patent
·
OSTI ID:872726
- Kingston, TN
- Pattersonville, NY
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.
- Research Organization:
- LOCKHEED MARTIN ENERGY RES COR
- DOE Contract Number:
- AC05-96OR22464
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5997802
- OSTI ID:
- 872726
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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active metal
active metals
allow
appreciable
barrier
carbon
cast
ceramic
ceramic composite
ceramic mater
ceramic material
changes
composite
comprises
conductive
conductive ceramic
contamination
crucible
crucible comprises
differential
differential thermal
directly
effects
embedded
expansions
heating
induction
induction heating
induction melting
interposed
material
matrix
melt
melting
metal
metal ceramic
metals
moderates
noncarbon
perforated
perforated metal
rapid
reactive
reactive metal
reactive metals
serves
silicon
sintered
sintered metal
sleeve
suitable
susceptible
susceptor
temperature
temperature induction
thermal
thermal expansion
thermal-shock-absorber
thermally
thermally conductive
active metal
active metals
allow
appreciable
barrier
carbon
cast
ceramic
ceramic composite
ceramic mater
ceramic material
changes
composite
comprises
conductive
conductive ceramic
contamination
crucible
crucible comprises
differential
differential thermal
directly
effects
embedded
expansions
heating
induction
induction heating
induction melting
interposed
material
matrix
melt
melting
metal
metal ceramic
metals
moderates
noncarbon
perforated
perforated metal
rapid
reactive
reactive metal
reactive metals
serves
silicon
sintered
sintered metal
sleeve
suitable
susceptible
susceptor
temperature
temperature induction
thermal
thermal expansion
thermal-shock-absorber
thermally
thermally conductive