scholarly journals Characterization of SiC coatings on HTGR fuel particles. Final report

1981 ◽  
Author(s):  
R. J. Lauf ◽  
D. N. Braski
Keyword(s):  
Final Report ◽  
Fuel Particles ◽  
Sic Coatings ◽  
Htgr Fuel

Irradiation behavior of pyrolytic silicon carbide

1983 ◽  
Vol 41 ◽  
pp. 72-73
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Products ◽  
Thermodynamics And Kinetics ◽  
Neutron Fluences ◽  
Fuel Particles ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of ◽  
Htgr Fuel

Fuel particles for the High-Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) combined effects of irradiation and fission products. This paper reports the behavior of SiC deposited on inert microspheres and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

scholarly journals Irradiation performance of pyrolytic silicon carbide coatings on fissile fuel particles

1984 ◽  
Vol 42 ◽  
pp. 418-419
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Product ◽  
Fission Products ◽  
Carbide Coatings ◽  
Fuel Particles ◽  
Irradiation Performance ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of

Fuel particles for the High Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC coating with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) the combined effects of irradiation and fission product interactions. This paper reports the behavior of SiC deposited on fissile fuel particles and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

Microstructure and Microhardness Characterization of Cr3C2-SiC Coatings Produced by the Plasma Transferred Arc Method

2012 ◽  
Vol 54 (11-12) ◽  
pp. 793-799 ◽  
Author(s):  
Serkan Islak ◽  
Özkan Eski ◽  
Soner Buytoz ◽  
Muzaffer Karagöz ◽  
Joseph Stokes
Keyword(s):  
Plasma Transferred Arc ◽  
Transferred Arc ◽  
Sic Coatings

Deposition of TRISO Particles With Superhard SiC Coatings and the Characterization of Anisotropy by Raman Spectroscopy

2009 ◽  
Vol 131 (4) ◽  
Author(s):  
E. López-Honorato ◽  
P. J. Meadows ◽  
J. Tan ◽  
Y. Xiang ◽  
P. Xiao
Keyword(s):  
Solid Solution ◽  
Raman Spectroscopy ◽  
Pyrolytic Carbon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Flat Substrate ◽  
High Concentrations ◽  
Triso Particles ◽  
Sic Coatings

In this work we have deposited silicon carbide (SiC) at 1300°C with the addition of small amounts of propylene. The use of propylene and high concentrations of methyltrichlorosilane (9 vol %) allowed the deposition of superhard SiC coatings (42 GPa). The superhard SiC could result from the presence of a SiC–C solid solution, undetectable by X-ray diffraction but visible by Raman spectroscopy. Another sample obtained by the use of 50 vol % Argon, also showed the formation of SiC with good properties. The use of a flat substrate together with the particles showed the importance of carrying out the analysis on actual particles rather than in flat substrates. We show that it is possible to characterize the anisotropy of pyrolytic carbon by Raman spectroscopy.

scholarly journals Design and operation of equipment used to develop remote coating capability for HTGR fuel particles

1978 ◽  
Author(s):  
R. R. Suchomel ◽  
D. P. Stinton ◽  
M. K. Preston ◽  
J. L. Heck ◽  
B. J. Bolfing ◽  
...  
Keyword(s):  
Fuel Particles ◽  
Htgr Fuel
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