✦ LIBER ✦

Thermal conductivity of apiezon N grease at liquid helium temperatures

✍ Scribed by M.M. Kreitman; J.T. Callahan

Publisher: Elsevier Science
Year: 1970
Tongue: English
Weight: 660 KB
Volume: 10
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(70)90088-3

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✦ Synopsis

Measurements carried out on bulk samples of apiezon N grease in nylon tubes indicate that the grease behaves as a thermal insulator between 4.2 and 1.4 K, and therefore applications utilizing thick grease coatings to provide thermal contact should be avoided. In addition it was observed that the thermal cycfing of glass tubes packed with the grease between 300 and 77 K, under varying conditions of vacuum, can lead to grease column separations which reduce the conductivity further. It is noted that these results may have a bearing on the thermal contact between a heat sink and a small thermometer which has been positioned in a grease hole within the heat sink.

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