The thermal conductivity of compacted powder carbons and mixtures of carbon powders with uranium carbide particles

✍ Scribed by R.P. Tye; Margaret J. Woodman

• Publisher: Elsevier Science
• Year: 1966
• Tongue: English
• Weight: 900 KB
• Volume: 4
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(66)90078-9

✦ Synopsis

Measurements of thermal conductivity and electrical resistivity have been undertaken ovet the temperature range 20"-200°C for a series of compacted graphite powder matrices and a series of matrix materials mixed with different volumes of coated uranium carbide particles. The temperature range has been extended to 1000°C for particular samples. Results indicate that the manufacturing process produces homogeneous materials whose measured transport properties are affected markedly by variations of several parameters including the initial compacting pressure, the volume of added particles and the amount of pyrolytic carbon deposited in the pores.

Large variations in both physicat properties are obtained at the lower temperatures for changes in each of these parameters. For the pressure variable the thermal conductivity is found to change linearly with increase of pressure over the range 6-1000 psi. .at higher temperatures the differences are much reduced and the materrals behave in a manner similar to other carbons and gr.lphites having similar propertie at the lower temperatures.