Method of extruding and packaging a thin sample of reactive material including forming the extrusion die

Patent · Tue Feb 19 04:00:00 EST 1985

OSTI ID:5526986

Lewandowski, E F; Peterson, L L

This invention teaches a method of cutting a narrow slot in an extrusion die with an electrical discharge machine by first drilling spaced holes at the ends of where the slot will be, whereby the oil can flow through the holes and slot to flush the material eroded away as the slot is being cut. The invention further teaches a method of extruding a very thin ribbon of solid highly reactive material such as lithium or sodium through the die in an inert atmosphere of nitrogen, argon or the like as in a glovebox. The invention further teaches a method of stamping out sample discs from the ribbon and of packaging each disc by sandwiching it between two aluminum sheets and cold welding the sheets together along an annular seam beyond the outer periphery of the disc. This provides a sample of high purity reactive material that can have a long shelf life.

• Assignee: Dept. of Energy
• Patent Number(s): US 4499708
• OSTI ID: 5526986
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALKALI METALS
DIES
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
EXTRUSION
FABRICATION
FOILS
IMPURITIES
LITHIUM
MACHINERY
MATERIALS WORKING
METALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PURIFICATION
SAMPLE PREPARATION
SODIUM