Method for producing microporous metal bodies

Patent · Fri Jan 01 00:00:00 EST 1982

OSTI ID:864429

Danko, Joseph C ^[1]

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1. Danville, CA

Tungsten is vapor-deposited by hydrogen reduction of tungsten hexafluoride (WF.sub.6) to produce a tungsten body having from 40 to 100 ppm fluorine. The tungsten is then heated under vacuum to produce grain boundary porosity for a sufficient period of time to allow the pores along the grain boundaries to become interconnected.

• DOE Contract Number: AT(04-3)-189
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4362564
• OSTI ID: 864429
• Country of Publication: United States
• Language: English

Related Subjects

method
producing
microporous
metal
bodies
tungsten
vapor-deposited
hydrogen
reduction
hexafluoride
wf
produce
40
100
ppm
fluorine
heated
vacuum
grain
boundary
porosity
sufficient
period
time
allow
pores
boundaries
interconnected
porous metal
grain boundaries
grain boundary
sufficient period
producing microporous
metal bodies
tungsten hexafluoride
hydrogen reduction
/148/75/376/419/976/