Mixed phase evaporation source

Details Mixed phase evaporation source Mixed phase evaporation source

1974-10-11

1977-07-12

Envall, Jr., R. N.

75 841R, H05B 700

Patent

active

040355748

ABSTRACT:
Apparatus for reducing convection current heat loss in an electron beam evaporator. A material to be evaporated (evaporant) is placed in the crucible of an electron beam evaporation source along with a porous mass formed of a powdered or finely divided solid to act as an impedance to convection currents. A feed system is employed to replenish the supply of evaporant as it is vaporized.

REFERENCES:
patent: 3205068 (1965-09-01), Erler
patent: 3364296 (1968-01-01), Smith, Jr.
patent: 3437328 (1969-04-01), Kennedy et al.
patent: 3437734 (1969-04-01), Roman et al.
patent: 3554512 (1971-01-01), Elliot

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