High density, uniformly distributed W/UO2 for use in Nuclear Thermal Propulsion

JOURNAL OF NUCLEAR MATERIALS

卷:486

Article

Tucker, Dennis S.¹  Barnes, Marvin W.¹  Hone, Lance²  Cook, Steven² 

[1] MSFC, EM32, Huntsville, AL 35812 USA

[2] Ctr Space Nucl Res, Idaho Falls, ID 83401 USA

关键词: Nuclear Thermal Propulsion;    Tungsten;    Uranium dioxide;    Spark plasma sintering;    Density;    Uniform distribution;   

DOI  :  10.1016/j.jnucmat.2017.01.033

来源: Elsevier

【 摘 要 】

An inexpensive, quick method has been developed to obtain uniform distributions of UO2 particles in a tungsten matrix utilizing 0.5 wt percent low density polyethylene. Powders were sintered in a Spark Plasma Sintering (SPS) furnace at 1600 degrees C, 1700 degrees C, 1750 degrees C, 1800 degrees C and 1850 degrees C using a modified sintering profile. This resulted in a uniform distribution of UO2 particles in a tungsten matrix with high densities, reaching 99.46% of theoretical for the sample sintered at 1850 C. The powder process is described and the results of this study are given below. Published by Elsevier B.V.

【 授权许可】

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