Cyclic ablation of high-emissivity Sm-doped ZrB2/SiC coatings on alumina substrates

2018 ◽  
Vol 38 (4) ◽  
pp. 1136-1142 ◽  
Author(s):  
Anneliese E. Brenner ◽  
Angel A. Peña ◽  
Xin Li Phuah ◽  
Christopher Petorak ◽  
Brian Thompson ◽  
...  
Keyword(s):  
Sic Coatings ◽  
High Emissivity

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.

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

Ablative Property and Mechanism of ZrC-TaC/ZrC-SiC Coatings on C/C Composites under Different Heat Fluxes

2021 ◽  
Author(s):  
Xiao Luo ◽  
Xin Yang ◽  
Qizhong Huang ◽  
Anhong Shi ◽  
Cunqian Fang ◽  
...  
Keyword(s):  
Heat Fluxes ◽  
Sic Coatings

Oxidation protective ZrB2–SiC coatings with ferrocene addition on SiC coated graphite

2016 ◽  
Vol 42 (2) ◽  
pp. 2654-2661 ◽  
Author(s):  
Peng Wang ◽  
Changling Zhou ◽  
Xinghong Zhang ◽  
Guangdong Zhao ◽  
Baosheng Xu ◽  
...  
Keyword(s):  
Sic Coatings

Oxidation Resistance of HfB2-SiC Coatings for Pro...

2005 ◽  
Author(s):  
P. Lespade ◽  
N. Richet ◽  
P. Goursat
Keyword(s):  
Oxidation Resistance ◽  
Sic Coatings

Synthesis of NiCr2O4 spinel coatings with high emissivity by plasma spraying

2012 ◽  
Vol 19 (3) ◽  
pp. 266-270 ◽  
Author(s):  
Zhen-qi Zhu ◽  
Xu-dong Cheng ◽  
Wei-ping Ye ◽  
Jie Min
Keyword(s):  
Plasma Spraying ◽  
High Emissivity

Preparation of a flexible high emissivity coating on quartz fiber fabric for thermal protection

2017 ◽  
Vol 43 (16) ◽  
pp. 14292-14300 ◽  
Author(s):  
Xin Tao ◽  
Lingyu Zhang ◽  
Xiaohui Ma ◽  
Xiaojing Xu ◽  
Anran Guo ◽  
...  
Keyword(s):  
Thermal Protection ◽  
Quartz Fiber ◽  
Fiber Fabric ◽  
High Emissivity

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.

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