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Title: SPS Fabrication of Tungsten-Rhenium Alloys in Support of NTR Fuels Development

Abstract

Abstract. Tungsten metal slugs were fabricated via Spark Plasma Sintering (SPS) of powdered metals at temperatures ranging from 1575 K to 1975 K and hold times of 5 minutes to 30 minutes, using powders with an average diameter of 7.8 ?m. Sintered tungsten specimens were found to have relative densities ranging from 83 % to 94 % of the theoretical density for tungsten. Consolidated specimens were also tested for their Vickers Hardness Number (VHN), which was fitted as a function of relative density; the fully consolidated VHN was extrapolated to be 381.45 kg/mm2. Concurrently, tungsten and rhenium powders with average respective diameters of 0.5 ?m and 13.3 ?m were pre-processed either by High-Energy-Ball-Milling (HEBM) or by homogeneous mixing to yield W-25at.%Re mixtures. The powder batches were sintered at temperatures of 1975 K and 2175 K for hold times ranging from 0 minutes to 60 minutes yielding relative densities ranging from 94% to 97%. The combination of HEBM and sintering showed a significant decrease in the inter-metallic phases compared to that of the homogenous mixing and sintering.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
DOE - NE
OSTI Identifier:
1013711
Report Number(s):
INL/CON-10-20354
TRN: US1102546
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: Nuclear and Emerging Technologies for Space 2011,Albuquerque, NM,02/07/2011,02/10/2011
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; ALLOYS; FABRICATION; MIXTURES; PLASMA; RHENIUM; SINTERING; TUNGSTEN; VICKERS HARDNESS; Fabrication; Tungsten-Rhenium

Citation Formats

Webb, Jonathan A, Charit, Indrajit, Sparks, Cory, Butt, Darryl P, Frary, Megan, and Carroll, Mark. SPS Fabrication of Tungsten-Rhenium Alloys in Support of NTR Fuels Development. United States: N. p., 2011. Web.
Webb, Jonathan A, Charit, Indrajit, Sparks, Cory, Butt, Darryl P, Frary, Megan, & Carroll, Mark. SPS Fabrication of Tungsten-Rhenium Alloys in Support of NTR Fuels Development. United States.
Webb, Jonathan A, Charit, Indrajit, Sparks, Cory, Butt, Darryl P, Frary, Megan, and Carroll, Mark. Tue . "SPS Fabrication of Tungsten-Rhenium Alloys in Support of NTR Fuels Development". United States. https://www.osti.gov/servlets/purl/1013711.
@article{osti_1013711,
title = {SPS Fabrication of Tungsten-Rhenium Alloys in Support of NTR Fuels Development},
author = {Webb, Jonathan A and Charit, Indrajit and Sparks, Cory and Butt, Darryl P and Frary, Megan and Carroll, Mark},
abstractNote = {Abstract. Tungsten metal slugs were fabricated via Spark Plasma Sintering (SPS) of powdered metals at temperatures ranging from 1575 K to 1975 K and hold times of 5 minutes to 30 minutes, using powders with an average diameter of 7.8 ?m. Sintered tungsten specimens were found to have relative densities ranging from 83 % to 94 % of the theoretical density for tungsten. Consolidated specimens were also tested for their Vickers Hardness Number (VHN), which was fitted as a function of relative density; the fully consolidated VHN was extrapolated to be 381.45 kg/mm2. Concurrently, tungsten and rhenium powders with average respective diameters of 0.5 ?m and 13.3 ?m were pre-processed either by High-Energy-Ball-Milling (HEBM) or by homogeneous mixing to yield W-25at.%Re mixtures. The powder batches were sintered at temperatures of 1975 K and 2175 K for hold times ranging from 0 minutes to 60 minutes yielding relative densities ranging from 94% to 97%. The combination of HEBM and sintering showed a significant decrease in the inter-metallic phases compared to that of the homogenous mixing and sintering.},
doi = {},
url = {https://www.osti.gov/biblio/1013711}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {2}
}

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