Method for producing microporous metal bodies

Details Method for producing microporous metal bodies Method for producing microporous metal bodies

1967-09-12

1982-12-07

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75224, 75 844, 148130, B22F 300

Patent

active

043625649

ABSTRACT:
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.

REFERENCES:
patent: 3139658 (1964-07-01), Brenner
patent: 3234007 (1966-02-01), Blocher
patent: 3318724 (1967-05-01), Heestand
patent: 3343979 (1967-09-01), Hamrin

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