Method for gas-metal arc deposition

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867602

Buhrmaster, Carol L ^[1]; Clark, Denis E ^[2]; Smartt, Herschel B ^[2]

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1. Corning, NY
2. Idaho Falls, ID

Method and apparatus for gas-metal arc deposition of metal, metal alloys, and metal matrix composites. The apparatus contains an arc chamber for confining a D.C. electrical arc discharge, the arc chamber containing an outlet orifice in fluid communication with a deposition chamber having a deposition opening in alignment wiht the orifice for depositing metal droplets on a coatable substrate. Metal wire is passed continuously into the arc chamber in alignment with the orifice. Electric arcing between the metal wire anode and the orifice cathode produces droplets of molten metal from the wire which pass through the orifice and into the deposition chamber for coating a substrate exposed at the deposition opening. When producing metal matrix composites, a suspension of particulates in an inert gas enters the deposition chamber via a plurality of feed openings below and around the orifice so that reinforcing particulates join the metal droplets to produce a uniform mixture which then coats the exposed substrate with a uniform metal matrix composite.

• Research Organization: EG & G IDAHO INC
• DOE Contract Number: AC07-76ID01570
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4970091
• OSTI ID: 867602
• Country of Publication: United States
• Language: English

Related Subjects

method
gas-metal
deposition
apparatus
metal
alloys
matrix
composites
contains
chamber
confining
electrical
discharge
containing
outlet
orifice
fluid
communication
alignment
wiht
depositing
droplets
coatable
substrate
wire
passed
continuously
electric
arcing
anode
cathode
produces
molten
pass
coating
exposed
producing
suspension
particulates
inert
gas
enters
via
plurality
feed
openings
below
reinforcing
join
produce
uniform
mixture
coats
composite
metal wire
producing metal
wire anode
deposition method
metal droplets
matrix composites
metal matrix
deposition chamber
molten metal
inert gas
metal alloy
fluid communication
chamber containing
metal alloys
form metal
outlet orifice
matrix composite
uniform metal
chamber via
depositing metal
uniform mixture
cathode produces
apparatus contains
feed openings
exposed substrate
gas enters
metal droplet
/427/