Method for gas-metal arc deposition

Patent · Tue Nov 13 00:00:00 EST 1990

OSTI ID:7168047

Buhrmaster, C L; Clark, D E; Smartt, H B

Method and apparatus for gas-metal arc deposition of metal, metal alloys, and metal matrix composites are disclosed. 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 with 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. 1 fig.

• DOE Contract Number: AC07-76ID01570
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 4970091; A
• Application Number: PPN: US 7-423172
• OSTI ID: 7168047
• Resource Relation: Patent File Date: 18 Oct 1989
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
ELECTRODEPOSITION
COMPOSITE MATERIALS
METALS
DESIGN
ELECTRIC ARCS
EQUIPMENT
LIQUID METALS
CURRENTS
DEPOSITION
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTROLYSIS
ELEMENTS
FLUIDS
LIQUIDS
LYSIS
MATERIALS
SURFACE COATING
360101* - Metals & Alloys- Preparation & Fabrication
360601 - Other Materials- Preparation & Manufacture