Gd2O2S-HoCu2复合磁性蓄冷材料的制备研究  

Research on preparation of Gd2O2S-HoCu2 composite magnetic regenerator materials

作　　者：张波[1] 叶荣昌[1] 龙毅[1] 常永勤[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《功能材料》2007年第A03期1156-1157,共2页Journal of Functional Materials

摘　　要：采用粉末冶金方法首次制备了Gd2O2S-HoCu2金属-陶瓷复合性蓄冷材料。结果表明，将Gd2O2S与HoCu2两种磁性蓄冷材料粉末按照一定比例混合，经球磨处理后压制成块，在氩气保护气氛下1100℃保温30min进行真空烧结，可制备成Gd2O2S-HoCu2金属-陶瓷复合磁性蓄冷材料，新型的金属-陶瓷复合磁性蓄冷材料由GOS与HoCu2两相构成，其比热性能良好，作为3～10K温区附近的蓄冷材料使用非常具有实用价值。Gd2O2S-HoCu2 composite magnetic regenerator material has been prepared by powder metallurgical method for the first time. Results show that the new composite magnetic regenerator materials can be sintered at 1100℃×30min in argon atmosphere after milling and pressing the mixture of the powder of Gd2O2S and HoCu2 at a certain proportion.This composite is composed of Gd2O2S and HoCu2 phases.It has good specific heat properties and can be used as a promising regenerator material in 3-7K ultra-low temperature region.

关 键 词：磁性蓄冷材料 Gd2O2S HoCu2 比热 

分 类 号：TG146.4[一般工业技术—材料科学与工程]