Comparative evaluation of erbium and lead regenerator materials for low temperature cryocoolers

A new erbium-based alloy has been tested as an environmentally benign replacement for lead in the second stage regenerator of low temperature (8–16 K) cryocoolers. This work focuses on obtaining improved performance of a Gifford–McMahon cooler by material modification in the second stage regenerator...

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Bibliographic Details
Published in:Cryogenics (Guildford) 2002-08, Vol.42 (8), p.463-467
Main Authors: Wysokinski, T.W, Barclay, J.A, Gschneidner, K.A, Pecharsky, V.K, Pecharsky, A.O
Format: Article
Language:English
Subjects:
Applied sciences
COMPARATIVE EVALUATIONS
Cooling systems
Cryogenics
Energy
Energy. Thermal use of fuels
ERBIUM
Erbium alloys
Exact sciences and technology
GM-cryocooler
Lead
Low temperature effects
Magnetic properties and materials
MATERIALS SCIENCE
Refrigerating engineering. Cryogenics. Food conservation
Regenerator
REGENERATORS
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Summary:A new erbium-based alloy has been tested as an environmentally benign replacement for lead in the second stage regenerator of low temperature (8–16 K) cryocoolers. This work focuses on obtaining improved performance of a Gifford–McMahon cooler by material modification in the second stage regenerator. Properties and experimental results for an improved second stage regenerator using erbium-based alloys are presented. A slight improvement in performance was observed using the erbium regenerator material over lead.
ISSN:0011-2275
1879-2235
DOI:10.1016/S0011-2275(02)00049-8