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Reusable crucible for containing corrosive liquids

Patent ·
OSTI ID:869717

A reusable, non-wetting, corrosion-resistant material suitable for containment of corrosive liquids is formed of a tantalum or tantalum alloy substrate that is permeated with carbon atoms. The substrate is carburized to form surface layers of TaC and Ta.sub.2 C, and then is heated at high temperature under vacuum until the carbon atoms in the carbide layers diffuse throughout the substrate to form a solid solution of carbon atoms randomly interspersed in the tantalum or tantalum alloy lattice.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 5383981
OSTI ID:
869717
Country of Publication:
United States
Language:
English

References (5)

High-Temperature Interactions off Refractory Metals with Gases journal October 1988
Group IVa and Va transition metal interactions with carbon and hydrocarbons I: Thermodynamics of formation of carbon solid solutions and carbides — kinetics and mechanisms of carburization in hydrocarbons, and the influence of oxygen or nitrogen dopants journal July 1984
The high-temperature solid solubility limit of carbon in tantalum journal January 1965
Phase boundary motion and polyphase diffusion in binary metal-interstitial systems journal February 1968
Thermodynamics and phase relations in refractory metal solid solutions containing carbon, nitrogen, and oxygen journal July 1972

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Related Subjects

/148/420/
alloy
alloy substrate
atoms
carbide
carbide layers
carbon
carbon atom
carbon atoms
carburized
containing
containment
corrosion-resistant
corrosion-resistant material
corrosive
corrosive liquids
crucible
diffuse
form
formed
heated
interspersed
lattice
layers
liquids
material
material suitable
non-wetting
permeated
randomly
resistant material
reusable
solid
solid solution
solution
substrate
suitable
surface
surface layer
surface layers
tac
tantalum
tantalum alloy
temperature
throughout
vacuum