Method of fabricating thin-walled articles of tungsten-nickel-iron alloy

Patent · Tue Jun 01 00:00:00 EDT 1982

OSTI ID:6188392

Hovis, V M; Northcutt, W G

The present invention relates to a method for fabricating thinwalled high-density structures of tungsten-nickel-iron alloys. A powdered blend of the selected alloy constituents is plasma sprayed onto a mandrel having the desired article configuration. The sprayed deposit is removed from the mandrel and subjected to liquid phase sintering to provide the alloyed structure. The formation of the thin-walled structure by plasma spraying significantly reduces shrinkage, and cracking while increasing physical properties of the structure over that obtainable by employing previously known powder metallurgical procedures.

• Assignee: Dept. of Energy
• Patent Number(s): US 4332617
• OSTI ID: 6188392
• Resource Relation: Patent File Date: Filed date 18 Sep 1979; Other Information: PAT-APPL-076528
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON ALLOYS
FABRICATION
NICKEL ALLOYS
TUNGSTEN ALLOYS
WALLS
DENSITY
DEPOSITION
HEATING
PLASMA ARC SPRAYING
POWDERS
SHRINKAGE
SINTERING
TENSILE PROPERTIES
THICKNESS
ALLOYS
DIMENSIONS
MECHANICAL PROPERTIES
PHYSICAL PROPERTIES
SPRAY COATING
SURFACE COATING
360101* - Metals & Alloys- Preparation & Fabrication