Method for locating metallic nitride inclusions in metallic alloy ingots
Patent
·
OSTI ID:868274
- Albany, OR
- Corvallis, OR
A method of determining the location and history of metallic nitride and/or oxynitride inclusions in metallic melts. The method includes the steps of labeling metallic nitride and/or oxynitride inclusions by making a coreduced metallic-hafnium sponge from a mixture of hafnium chloride and the chloride of a metal, reducing the mixed chlorides with magnesium, nitriding the hafnium-labeled metallic-hafnium sponge, and seeding the sponge to be melted with hafnium-labeled nitride inclusions. The ingots are neutron activated and the hafnium is located by radiometric means. Hafnium possesses exactly the proper metallurgical and radiochemical properties for this use.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Assignee:
- United States of America as represented by Secretary of (Washington, DC)
- Patent Number(s):
- US 5110546
- OSTI ID:
- 868274
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
method
locating
metallic
nitride
inclusions
alloy
ingots
determining
location
history
oxynitride
melts
steps
labeling
coreduced
metallic-hafnium
sponge
mixture
hafnium
chloride
metal
reducing
mixed
chlorides
magnesium
nitriding
hafnium-labeled
seeding
melted
neutron
activated
located
radiometric
means
possesses
exactly
proper
metallurgical
radiochemical
properties
reduced metal
metallic alloy
metallic melt
chemical properties
metallic nitride
neutron activated
nitride inclusions
/420/
locating
metallic
nitride
inclusions
alloy
ingots
determining
location
history
oxynitride
melts
steps
labeling
coreduced
metallic-hafnium
sponge
mixture
hafnium
chloride
metal
reducing
mixed
chlorides
magnesium
nitriding
hafnium-labeled
seeding
melted
neutron
activated
located
radiometric
means
possesses
exactly
proper
metallurgical
radiochemical
properties
reduced metal
metallic alloy
metallic melt
chemical properties
metallic nitride
neutron activated
nitride inclusions
/420/