TY - GEN
T1 - Processing of inert SiC matrix with triso coated fuel by liquid phase sintering
AU - Shimoda, Kazuya
AU - Hinoki, Tatsuya
AU - Terrani, Kurt A.
AU - Snead, Lance L.
AU - Katoh, Yutai
PY - 2013
Y1 - 2013
N2 - SiC is a promising material for nuclear applications especially due to its outstanding properties of excellent high temperature strength, high thermal conductivity and exceptional low-activation against neutron irradiation. It is proposed to replace the current uranium oxide fuel pellets for light water reactors with the ceramic micro-encapsulated uranium compacted within SiC inert matrix. In this study, nanostructured SiC fabricated by liquid phase sintering of SiC nanopowder was proposed as a dense inert SiC matrix for compact-packing of surrogate TRISO fuel particles. Sintering additives like Y2O 3 and Al2O3 were used in addition to SiC nanopowder in the amount of 6 wt%. The powder mixture without the fuel particles was sintered by hot-pressing at 1750-1900°C under 10 MPa to investigate the influences of sintering temperature on density and compression strength in inert SiC matrix itself. Based on the condition for densfied SiC matrix formation without the fuel particles under as a low sintering temperature as possible, pellets including 40 vol% TRISO particles were sintered at hot-pressing and characterized by microstructural observation and evaluation of thermal conductivity.
AB - SiC is a promising material for nuclear applications especially due to its outstanding properties of excellent high temperature strength, high thermal conductivity and exceptional low-activation against neutron irradiation. It is proposed to replace the current uranium oxide fuel pellets for light water reactors with the ceramic micro-encapsulated uranium compacted within SiC inert matrix. In this study, nanostructured SiC fabricated by liquid phase sintering of SiC nanopowder was proposed as a dense inert SiC matrix for compact-packing of surrogate TRISO fuel particles. Sintering additives like Y2O 3 and Al2O3 were used in addition to SiC nanopowder in the amount of 6 wt%. The powder mixture without the fuel particles was sintered by hot-pressing at 1750-1900°C under 10 MPa to investigate the influences of sintering temperature on density and compression strength in inert SiC matrix itself. Based on the condition for densfied SiC matrix formation without the fuel particles under as a low sintering temperature as possible, pellets including 40 vol% TRISO particles were sintered at hot-pressing and characterized by microstructural observation and evaluation of thermal conductivity.
UR - http://www.scopus.com/inward/record.url?scp=84875748729&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84875748729
SN - 9781118205990
T3 - Ceramic Engineering and Science Proceedings
SP - 25
EP - 31
BT - Ceramic Materials for Energy Applications II - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
T2 - Ceramic Materials for Energy Applications II - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
Y2 - 22 January 2012 through 27 January 2012
ER -