MAGNETOCALORIC EFFECT AND PROPERTIES OFLA(FE_(11.1)CO_(0.8)SI_(1.1))B_(0.25) ALLOY MANUFACTURED IN BATCHES

机译：磁热效应和特性（Fe_（11.1）CO_（0.8）Si_（1.1））B_（0.25）批次制造的合金

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Every 10 kg of La(Fe_(11.1)Co_(0.8)Si_(1.1))B_(0.25) alloys were melted by intermediate frequency furnace (2500 Hz). One batch of the melted alloys was carted into ingots with thickness of 10 mm in copper mold.,Another batch of the melted alloys was strip-carted into thin strips by a water-cooling copper roller. The samples prepared were annealed at 1070 °C for 150 h and 30 h respectively. Results indicate that different annealing time does not have much influence on magnetocaloric effect of La(Fe_(11.1)Co_(0.8)Si_(1.1))B_(0.25) alloys. SEM and EPMA analysis shows that the samples are composed of 1:13 .main phase, La-rich phase and Fe-rich phase. The La-rich phase contains lanthanum (La), iron (Fe), cobalt (Co) and silicon (Si). The Fe-rich phase mainly contains Fe and small amount of Co. All boron (B) elements are ih Fe-rich phase. The isothermal entropy change ΔS_m and the adiabatic temperature change 471d of the mold-casting samples of La(Fe_(11.1)Co_(0.8)Si_(1.1))B_(0.25) alloy are larger than those of the strip-casting samples of La(Fe_(11.1)Co_(0.8)Si_(1.1)B_(0.25) alloy.

机译：每10kg La（Fe_（11.1）CO_（0.8）Si_（1.1））B_（0.25）合金通过中频炉（2500Hz）熔化。将一批熔化合金挤成铜模具厚度为10mm的铸锭。，通过水冷铜辊将另一个熔化的合金熔化成细条。制备的样品分别在1070℃下退火150小时和30小时。结果表明，不同的退火时间对La（Fe_（11.1）CO_（0.8）Si_（1.1））B_（0.25）合金的磁热效应产生很大影响。 SEM和EPMA分析表明，样品由1:13组成.MAIN阶段，富含LA的相和Fe富相。富含La的相含有镧（La），铁（Fe），钴（Co）和硅（Si）。 FE丰富的阶段主要包含Fe和少量Co.所有硼（B）元素是IH Fe的阶段。 La（Fe_（11.1）CO_（0.8）Si_（1.1））B_（0.25）合金的模具铸造样品的等温熵改变ΔS_M和绝热温度变化471D大于LA的条带浇铸样品的模具铸造样品（FE_（11.1）CO_（0.8）SI_（1.1）B_（0.25）合金。

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《International Conference on Magnetic Refrigeration at Room Temperature》|2009年||共6页
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作者
J.H. HUANG; H.TAKATA; C.L. LIU; H.W. YAN; Y. WANG;
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中图分类 TB65-532;
关键词
MAGNETOCALORIC; PROPERTIES; MANUFACTURED;

机译：磁热定形;物业;制造;

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MAGNETOCALORIC EFFECT AND PROPERTIES OFLA(FE_(11.1)CO_(0.8)SI_(1.1))B_(0.25) ALLOY MANUFACTURED IN BATCHES

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