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 00:00:00 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: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5880846
• Report Number(s): LBL-8501; TRN: 79-021450
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
NIOBIUM ALLOYS
MECHANICAL PROPERTIES
PARTICLE SIZE
POWDER METALLURGY
TIN ALLOYS
DUCTILITY
EXTRUSION
INTERMETALLIC COMPOUNDS
PARTICLE BOOSTERS
POROSITY
POWER TRANSMISSION
RODS
SINTERING
SUPERCONDUCTIVITY
THERMONUCLEAR REACTORS
TIME DEPENDENCE
YIELD STRENGTH
ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FABRICATION
MATERIALS WORKING
METALLURGY
PHYSICAL PROPERTIES
SIZE
TENSILE PROPERTIES
360101* - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties
420201 - Engineering- Cryogenic Equipment & Devices
700209 - Fusion Power Plant Technology- Component Development & Materials Testing