Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1989-10-18
1990-11-13
Pianalto, Bernard
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 37, 427 38, 427192, 427201, B05D 100
Patent
active
049700910
ABSTRACT:
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.
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patent: 4687510 (1984-02-01), Cheney et al.
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Buhrmaster et al., "Spray Casting Aluminum and Al/SiC Composites", Journal of Metals (Nov. 1988).
Buhrmaster Carol L.
Clark Denis E.
Smartt Herschel B.
Fisher Robert J.
Glenn Hugh W.
Moser William R.
Pianalto Bernard
The United States of America as represented by the United States
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