Method of evaporating melts of alloys of metals having different

Details Method of evaporating melts of alloys of metals having different Method of evaporating melts of alloys of metals having different

1978-11-22

1980-10-28

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

219121EB, 427250, B05D 306

Patent

active

042307392

ABSTRACT:
Method for evaporating melts of alloys of metals of different vapor pressures from continuously fed, large-area evaporating crucibles by direct bombardment of the bath surface with focused electron beams which are periodically deflected according to a pattern. The alloy material is deposited on a plurality of substrates such as turbine blades which are positioned in a field above the evaporating crucible with local adaptation of the energy density to the thermal economy of the melt bath. At least one electron beam is deflected onto at least two substantially rectangular beam fields and is guided in each of these fields through a line raster at a frequency of at least 100 Hz while shifting periodically from one to the other field with a shift frequency of at most 5 Hz.

REFERENCES:
patent: 3432335 (1969-03-01), Schiller et al.
patent: 3582529 (1971-06-01), Anderson et al.
patent: 4110893 (1978-09-01), Elam et al.

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