Experiments with HEU (93.14 wt.%) metal annuli with internal graphite cylinder

2015 ◽  
Author(s):  
Xiaobo Liu ◽  
John D. Bess ◽  
Udo Wehmann ◽  
John T. Mihalczo
Keyword(s):  
Graphite Cylinder

The Characterization of Fibrous Material in CVI Graphite Cylinder Wall

2017 ◽  
Vol 904 ◽  
pp. 142-145 ◽  
Author(s):  
Min Yang ◽  
Ming Ming Yu ◽  
Hong Li ◽  
Mu Su Ren ◽  
Jia Bao Zhang ◽  
...  
Keyword(s):  
Fibrous Material ◽  
Chemical Vapor Infiltration ◽  
Laser Raman Spectroscopy ◽  
Main Element ◽  
High Temperature Treatment ◽  
Cylinder Wall ◽  
X Rays ◽  
Fibrous Materials ◽  
Graphite Cylinder

By isothermal chemical vapor infiltration (ICVI) preparation of carbon/carbon composites, We found fibrous materials with silver metallic luster in CVI furnace graphite cylinder outer wall, fiber diameter is 1 ~ 2 mm, length is 4 ~ 15 mm. The characterization of fibrous material have been systematically studied by scanning electron microscopy (SEM),element analysis, energy dispersive X-rays spectroscopy (EDS).After 2300 degrees heat treatment, the fibrous material were characterized by ultra-violet laser Raman spectroscopy. The SEM examination shows that these fibrous materials have a spherical top, the cross-section reveals a unique structure in which layers like growth rings lie concentrically on top of each other. The EDS analysis show the main element of fibrous material is carbon and a small amount of metallic element. Raman spectra show after 2300°C high temperature treatment ,the carbon fibrous material transformed from layer structure to graphite structure.

scholarly journals Benchmarking of HEU mental annuli critical assemblies with internally reflected graphite cylinder

2017 ◽  
Vol 146 ◽  
pp. 06020
Author(s):  
Liu Xiaobo ◽  
John D. Bess ◽  
Margaret A. Marshall
Keyword(s):  
Graphite Cylinder

Heated graphite cylinder electrodes

2007 ◽  
Vol 9 (2) ◽  
pp. 283-288 ◽  
Author(s):  
J SUN ◽  
L GUO ◽  
D ZHANG ◽  
W YIN ◽  
G CHEN
Keyword(s):  
Graphite Cylinder

Deoxidation of molten copper with a rotating graphite cylinder

1998 ◽  
Vol 29 (4) ◽  
pp. 739-747 ◽  
Author(s):  
Masaki Miyata ◽  
Masamichi Sano ◽  
Masahiro Hirasawa
Keyword(s):  
Molten Copper ◽  
Graphite Cylinder
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