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Propriétés radiatives à basse température de matériaux utilisés en cryogénie.

Low temperature radiative properties of materials used in cryogenics.

Auteurs : MUSILOVA V., HANZELKA P., KRALIK T., et al.

Type d'article : Article

Résumé

Radiative heat transfer between two parallel surfaces, a sample surface and a black surface, was measured. One of the surfaceswas cooled with liquid helium to about 5 K and the other one was step by step heated to temperatures ranging between 30 and140 K. As a result, the total hemispherical absorptivity and emissivity of the sample surface were determined in dependence onthe temperature of the heat radiation. Aluminium samples were made of Al sheet, Al foil and aluminized mylar. Further measurementswere performed on sheets of aluminium alloy, Cu, zinc brass and stainless steel. The influence of different types of sampletreatment such as chemical and mechanical surface finishing and material annealing on the radiative properties is presented. [Reprinted with permission from Elsevier. Copyright, 2005].

Détails

  • Titre original : Low temperature radiative properties of materials used in cryogenics.
  • Identifiant de la fiche : 2006-2753
  • Langues : Anglais
  • Source : Cryogenics - vol. 45 - n. 8
  • Date d'édition : 08/2005

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