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发明授权
US09556374B2 Rare-earth regenerator material particles, and group of rare-earth regenerator material particles, refrigerator and measuring apparatus using the same, and method for manufacturing the same 有权
稀土类再生材料粒子，稀土类再生材料粒子群，冰箱及使用其的测定装置及其制造方法

Rare-earth regenerator material particles, and group of rare-earth regenerator material particles, refrigerator and measuring apparatus using the same, and method for manufacturing the same
摘要：
Provided is a group of rare-earth regenerator material particles having an average particle size of 0.01 to 3 mm, wherein the proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number, and the proportion of particles having a depressed portion having a length of 1/10 to ½ of a circumferential length on a particle surface is 30% or more by number. By forming the depressed portion on the surface of the regenerator material particles, it is possible to increase permeability of an operating medium gas and a contact surface area with the operating medium gas.
摘要（中）：

提供了一组平均粒径为0.01〜3mm的稀土类再生材料粒子，其中长径比为2以下的粒子的比例为数为90％以上， 并且在颗粒表面上具有圆周长度的1/10至1/2的凹陷部分的颗粒的比例为30％以上。 通过在再生器材料颗粒的表面上形成凹陷部分，可以增加操作介质气体的渗透性和与操作介质气体的接触表面积。

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