Regenerator Matrix Materials Based on Ceramic Composites

  • W. N. Lawless
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)


Research on a large number of inexpensive ceramic composites for regenerator applications is reported. The composites are prepared by hot-pressing and consist of ceramic powders of spin-frustrated spinels in halide matrices, and thermal data on six composites selected to date are given. This series of composites offers specific heats equivalent to, or superior than, those of Er3Ni below 13 K, and thermal diffusivities are about an order of magnitude larger than that of Er3Ni. The composites are tough materials and have indentation-hardness values 10–20 times larger than that of Pb. Future plans are discussed, including the fabrication of composite spheres for user testing.


Thermal Diffusivity Ceramic Composite Thermal Conductivity Measurement Regenerator Material Knoop Hardness 
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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • W. N. Lawless
    • 1
  1. 1.CeramPhysics, Inc.WestervilleUSA

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