Investigation of a thermoplastic-powder metallurgy process for the fabrication of porous niobium rods
The feasibility of using a thermoplastic-powder metallurgy technique for the fabrication of porous niobium rods was investigated. Some early problems were overcome to successfully extrude the polymer coated niobium powder into long lengths. The effects of certain process variables were investigated. Residual porosity and extrusion pressure were found to be regulated by the polymer fraction. The procedures for taking the extruded polystyrene--niobium rods through the heat treatments to the final, tin infiltrated stage are explained.
- Research Organization:
- California Univ., Berkeley (USA). Lawrence Berkeley Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6605615
- Report Number(s):
- LBL-7346
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ELEMENTS
FABRICATION
METALLURGY
METALS
NIOBIUM
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
POROSITY
POWDER METALLURGY
REFRACTORY METALS
RODS
SUPERCONDUCTORS
THERMOPLASTICS
TRANSITION ELEMENTS
360101* -- Metals & Alloys-- Preparation & Fabrication
ELEMENTS
FABRICATION
METALLURGY
METALS
NIOBIUM
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
POROSITY
POWDER METALLURGY
REFRACTORY METALS
RODS
SUPERCONDUCTORS
THERMOPLASTICS
TRANSITION ELEMENTS