磁性蓄冷材料氢化反应的研究现状与进展

Research advances in hydrogenation of magnetic regenerative materials

以铒镍系与钬铜合金为代表的磁性蓄冷材料能在一定条件下与氢气发生反应,形成多种形式的氢化物。针对其氢化反应的研究现状进行了综述,讨论了相关氢化物的生成条件、晶格结构、相变温度、比热容等性质,以期寻找更多可用的蓄冷材料,进而为低温制冷机获取更低制冷温度、更大制冷量和更高制冷效率提供帮助。

Magnetic regenerative materials for cryocoolers, such as Er-Ni and Ho-Cu alloys, can react with hydrogen and produce different hydrides under certain circumstances. The research advances in hydrogenation of Er-Ni and Ho-Cu alloys was reviewed,and the features of hydrides such as reaction conditions, lattice structures,transitional temperatures and specific heats were discussed, aiming for exploring more regenerative materials and helping the cryocoolers to achieve lower refrigeration temperature,larger refrigeration capacity and higher efficiency.