Transactions of Materials and Heat Treatment

Title：Influence of hot pressing sinter process on room temperature magnetic refrigeration properties of GdSiGeDy alloys

Authors： ZHU Gen-song1 2 ZHOU Tian-rui1 YANG Bin2 (1.School of Mechanical and Electrical Engineering Nanchang University Nanchang 330029 China 2.College of Application and Science Jiangxi University of Science and Technology Ganzhou 341000 China)

Unit：

KeyWords： magnetic entropy change machine-alloying hot pressing sinter magnetic refrigerant material

ClassificationCode：TF124.5

year,vol(issue):pagenumber：2007,32(4):18-21

Abstract：

The influence of hot pressing sinter process(HPS)on room temperature magnetic refrigeration properties of GdSiGeDy serial alloys was studied.GdSiGeDy powder was made by mechanical alloying method.Sinter temperature,sinter time and heat rate of HPS were investigated.The magnetic entropy change(MEC)curves were made after VSM test.The conclusion is that the heat rate has a greater influence on MCE.The value of MEC increases with the decrease of heat rate.The value of MEC increases firstly,and then decreases with the increase of sinter temperature and ferromagnetism lost when temperature reaches 1050 ℃

Funds：

江西省科技厅重点资助项目(03Z02594)

Reference：

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