In the experiment of pulse tube refrigeration with He-H2 mixtures, it is found that Er3Ni, the regenerative material, is able to absorb H2 and produce Er3NiHx.

• 在采用He-H2混合工质脉管制冷实验中发现回热材料Er3Ni具有吸收(附) H2的性质,初步估算表明吸氢后形成的氢化物Er3NiHx具有比Er3Ni更大的体积比热容, 回热性能更加优越。