Coating apparatus – Gas or vapor deposition – With treating means
Patent
1987-12-10
1988-12-27
Lawrence, Evan
Coating apparatus
Gas or vapor deposition
With treating means
118715, 118728, C23C 1652
Patent
active
047932830
ABSTRACT:
A system for chemical vapor deposition of a material onto the surface of a substrate wherein an inner reactor tube is disposed within an outer furnace tube to provide a plenum chamber between the two tubes. The reactor tube is provided with a series of axially arranged openings to provide gas communication between the inside of the reactor tube and the plenum chamber. Structure is provided for introducing a first reactant gas into the plenum chamber from which a portion passes into the reactor chamber and structure is provided for introducing a second reactant gas directly into the reactor chamber, where a portion reacts with the first reactant gas to deposit a layer of material on substrates present in the reactor chamber. Separate lines are provided for exhausting unreacted first reactant gases from the plenum chamber and for exhausting unreacted second reactant gases from the reaction chamber.
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