【摘要】 采用真空高频磁悬浮炉制备出一系列Gd3-xCuxAl2(x=0,0.1,0.2,0.3)合金。通过Cu对Gd的部分替代,研究了Cu元素微量替代对Gd3Al2合金磁热效应的影响。结果表明,Gd3-xCuxAl2系合金的结构同样为Zr3Al2型;在1.5 T磁场下,随着Cu含量的增加,Gd3-xCuxAl2系合金的最大绝热温变下降,居里温度提高。说明Cu对Gd的部分替代改变了Gd3Al2合金磁热效应。更多还原

【Abstract】 A series of Gd3-xCuxAl2(x=0,0.1,0.2,0.3) alloys were prepared in a high-frequency floating furnace.The effect of minor substitution of Gd by Cu on the magnetocaloric effects of Gd3Al2 alloy was investigated.The results show that the structure of Gd3-xCuxAl2 alloys is the same of Zr3Al2;the maximum adiabatic temperature of Gd3-xCuxAl2 alloys decline and the Cure temperatures increase with the increase of the content of Cu under a magnetic field of 1.5 T.It was revealed that minor addition of Cu can change the magnetocaloric effects of Gd3Al2 alloy.更多还原