| 简介 |
The present invention provides a regenerator material whose filling rate can be improved and falls within a suitable range, and which can thus easily reduce the pressure loss of a refrigerant gas in the regenerator; and a method for producing the regenerator material. The regenerator material of the present invention comprises a sintered body of rare earth element-containing particles, wherein the sintered body has a porosity of 30 to 40%. The regenerator material production method of the present invention comprises the step of sintering rare earth element-containing starting material particles, wherein D50 and D90/10 of the starting material particles are respectively 100 to 320 µm and 1.5 to 2.5; wherein D10, D50, and D90 indicate the average particle sizes that respectively correspond to the 10th, 50th, and 90th percentiles of the total number of particles in the particle size distribution curve. |
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