Investigation of the effects of particle size on the mechanical properties of porous and tin infiltrated niobium rods fabricated by a thermoplastic-powder metallurgy technique

Technical Report · Fri Dec 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/5880846· OSTI ID:5880846

Noman, A

An investigation was made of the influence of particle size on the properties of both porous and tin infiltrated niobium rods fabricated by a thermoplastic-powder metallurgy technique. The residual porosity, extrusion pressure, tensile strength, and ductility were found to be dependent on the particle size distribution. All of these parameters were found to increase with increasing particle size. The influence of sintering time at a temperature of 2250/sup 0/C was also studied. With increasing sintering time, the residual porosity and tensile strength decreased, whereas the ductility increased. The procedures for fabricating infiltrated niobium rods and the various tests employed to determine their properties are described.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5880846
• Report Number(s): LBL-8501
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
DUCTILITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXTRUSION
FABRICATION
INTERMETALLIC COMPOUNDS
MATERIALS WORKING
MECHANICAL PROPERTIES
METALLURGY
NIOBIUM ALLOYS
PARTICLE BOOSTERS
PARTICLE SIZE
PHYSICAL PROPERTIES
POROSITY
POWDER METALLURGY
POWER TRANSMISSION
RODS
SINTERING
SIZE
SUPERCONDUCTIVITY
TENSILE PROPERTIES
THERMONUCLEAR REACTORS
TIME DEPENDENCE
TIN ALLOYS
YIELD STRENGTH