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Apparatus to Measure the Thermal Conductivity of Powders in Vacuum from 120 to 350°K

 

作者: Kenneth Watson,   Curtis A. Bauman,  

 

期刊: Review of Scientific Instruments  (AIP Available online 1963)
卷期: Volume 34, issue 11  

页码: 1235-1238

 

ISSN:0034-6748

 

年代: 1963

 

DOI:10.1063/1.1718188

 

出版商: AIP

 

数据来源: AIP

 

摘要:

An apparatus, enclosed in a sand‐cast aluminum vacuum chamber capable of retaining pressures of 10−5–10−6Torr, was used to measure the thermal conductivity of powder samples in vacuum. The base of the sample was heated by the temperature bath on which it rested and the top surface of the sample radiated into a cavity which was maintained at liquid nitrogen temperature (77°K). The thermal conductivity of the powders was calculated from the emitted flux, the sample thickness, and the bath temperature.

 

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