采用SPS(放电等离子烧结技术)制备了La( Fe11.2 Co0.7 Si1.1) B0.25合金,并进行了不同时间的热处理.利用XRD及SEM检测了合金的相结构及组织结构,同时对合金的等温磁熵变和绝热温变进行了研究.结果表明,随热处理时间的增加,合金的α - Fe相逐渐减少,主相La(Fe,Si)13相逐渐增加,其等温磁熵变和绝热温变也都逐渐增加.
参考文献
| [1] | Pecharsky VK;Gschneidner KA .Giant magnetocaloric effect in Gd-5(Si2Ge2)[J].Physical review letters,1997(23):4494-4497. |
| [2] | H. Wada;Y. Tanabe .Giant magnetocaloric effect of MnAs_(1-x)Sb_(x)[J].Applied physics letters,2001(20):3302-3304. |
| [3] | Tegu O;Bruck E et al.Transition-metal-based magnetic refrigerants for room-temperature application[J].Nature,2002,415:150-152. |
| [4] | Feng-xia Hu;Bao-gen Shen;Ji-rong Sun;Zhao-hua Cheng;Guang-hui Rao;Xi-xiang Zhang .Influence of negative lattice expansion and metamagnetic transition on magnetic entropy change in the compound LaFe_(11.4)Si_(1.6)[J].Applied physics letters,2001(23):3675-3677. |
| [5] | Fujita A;Fujieda S;Hasegawa Y et al.Itinerant? electron metransition and large Magnetocaloric effect in La (FexSi1-x)13 compounds and their hydrides[J].Physical Review B,2003,67:104416-1-104416-12. |
| [6] | Hu Fengxia;Max Iiyn;Tishin A M et al.Direct measurement of magnetocaloric effect in the First-order system LaFe11.7Si1.3[J].Apply Phys,2003,93(09):5503-5506. |
| [7] | Palstra T T M;Mydosh J A;Nieuwenhuuys G J et al.Study of the Critical Behaviour of the Magnetiza-tion and Electrical Resistivity in Cubic La (Fe,Si)13 Compounds[J].J Mag Mat,1983,36:290-296. |
| [8] | 宫继成,黄焦宏,郭锋,松林,金培育,闫宏伟.LaFe11.2Co0.7Si1.1Bx合金在室温区的大磁热效应[J].稀土,2007(04):34-37. |
| [9] | 黄焦宏,松林,金培育,王高峰,刘金荣,闫宏伟,张久兴.LaFe11.17-xCo0.78Si1.05Bx合金磁热效应的研究[J].功能材料,2006(12):1888-1890. |
| [10] | 郭培亮,黄焦宏,金培育,阎宏伟,刘翠兰,邓沅.不同工艺对LaFe11.9-xCoxSi1.1B0.25（x=0.7,0.8）合金的磁热效应的影响[J].稀土,2009(02):35-38. |
| [11] | 武清,黄焦宏,刘翠兰,闫宏伟,邓沅,程娟.粉末冶金法制备La（Fe11.05Co0.85Si1.1）B0.25化合物的磁热效应[J].稀有金属,2011(03):383-387. |
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