Method of producing microporous joints in metal bodies

Details Method of producing microporous joints in metal bodies Method of producing microporous joints in metal bodies

1967-09-12

1982-12-07

Hunt, Brooks H.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 39, 228193, 228231, 376456, B22F 500

Patent

active

043625827

ABSTRACT:
Tungsten is placed in contact with either molybdenum, tantalum, niobium, vanadium, rhenium, or other metal of atoms having a different diffusion coefficient than tungsten. The metals are heated so that the atoms having the higher diffusion coefficient migrate to the metal having the lower diffusion rate, leaving voids in the higher diffusion coefficient metal. Heating is continued until the voids are interconnected.

REFERENCES:
patent: 3157539 (1964-11-01), Dreher
patent: 3158732 (1964-11-01), Kazakov
patent: 3170234 (1965-02-01), Tarr
patent: 3188732 (1965-06-01), Feduska
patent: 3197858 (1965-08-01), Feduska
patent: 3205573 (1965-09-01), Seal
patent: 3259971 (1966-07-01), Gagola
patent: 3261724 (1966-07-01), Ulam
Guy--"Elements of Physical Metallurgy", Addison-Wesley Publishing Co., MC.-Mass 1951, pp. 397-404.

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