公开(公告)号：US20150047371A1

公开(公告)日：2015-02-19

申请号：US14359685

申请日：2012-05-17

申请人： Fengxia Hu ,  Ling Chen ,  Lifu Bao ,  Jing Wang ,  Baogen Shen ,  Jirong Sun ,  Huayang Gong

发明人： Fengxia Hu ,  Ling Chen ,  Lifu Bao ,  Jing Wang ,  Baogen Shen ,  Jirong Sun ,  Huayang Gong

IPC分类号： H01F1/01 ,  F25B21/00

CPC分类号： H01F1/015 ,  F25B21/00 ,  F25B2321/002

摘要： Provided is a high-strength, bonded La(Fe, Si)13-based magnetocaloric material, as well as a preparation method and use thereof. The magnetocaloric material comprises magnetocaloric alloy particles and an adhesive agent, wherein the particle size of the magnetocaloric alloy particles is less than or equal to 800 μm and are bonded into a massive material by the adhesive agent; the magnetocaloric alloy particle has a NaZn13-type structure and is represented by a chemical formula of La1-xRx(Fe1-p-qCopMnq)13-ySiyAα, wherein R is one or more selected from elements cerium (Ce), praseodymium (Pr) and neodymium (Nd), A is one or more selected from elements C, H and B, x is in the range of 0≦x≦0.5, y is in the range of 0.8≦y≦2, p is in the range of 0≦p≦0.2, q is in the range of 0≦q≦0.2, α is in the range of 0≦α≦3.0. Using a bonding and thermosetting method, and by means of adjusting the forming pressure, thermosetting temperature, and thermosetting atmosphere, etc., a high-strength, bonded La(Fe, Si)13-based magnetocaloric material can be obtained, which overcomes the frangibility, the intrinsic property, of the magnetocaloric material. At the same time, the magnetic entropy change remains substantially the same, as compared with that before the bonding. The magnetic hysteresis loss declines as the forming pressure increases. And the effective refrigerating capacity, after the maximum loss being deducted, remains unchanged or increases.

摘要翻译： 提供高强度的La（Fe，Si）13基磁热材料及其制备方法和用途。 磁热材料包括磁热合金颗粒和粘合剂，其中磁热合金颗粒的颗粒尺寸小于或等于800μm，并通过粘合剂粘合成块状材料; 磁热合金颗粒具有NaZn13型结构，并且由La1-xRx（Fe1-p-qCopMnq）13-ySiyAα的化学式表示，其中R是选自元素铈（Ce），镨（Pr） 和钕（Nd），A是选自元素C，H和B中的一种或多种，​​x在0和nlE的范围内; x和nlE; 0.5，y在0.8和nlE的范围内; y和nlE; 2，p在 0＆nlE; p＆nlE; 0.2，q在0和nlE的范围内; q＆nlE; 0.2，α在0＆lt; nEE;α＆nlE; 3.0的范围内。 使用粘结和热固化方法，通过调整成型压力，热固化温度和热固性气氛等，可以获得高强度的La（Fe，Si）13基磁热材料，克服了 易磁性，内在性质，磁热材料。 同时，与接合前相比，磁熵变保持基本相同。 随着成形压力的增加，磁滞损耗下降。 扣除最大损失后的有效制冷量保持不变或增加。

公开(公告)号：US10096411B2

公开(公告)日：2018-10-09

申请号：US14359685

申请日：2012-05-17

申请人： Fengxia Hu ,  Ling Chen ,  Lifu Bao ,  Jing Wang ,  Baogen Shen ,  Jirong Sun ,  Huayang Gong

发明人： Fengxia Hu ,  Ling Chen ,  Lifu Bao ,  Jing Wang ,  Baogen Shen ,  Jirong Sun ,  Huayang Gong

IPC分类号： B22F1/00 ,  B22F3/02 ,  H01F1/01 ,  F25B21/00

摘要： Provided is a high-strength, bonded La(Fe, Si)13-based magnetocaloric material, as well as a preparation method and use thereof. The magnetocaloric material comprises magnetocaloric alloy particles and an adhesive agent, wherein the particle size of the magnetocaloric alloy particles is less than or equal to 800 μm and are bonded into a massive material by the adhesive agent; the magnetocaloric alloy particle has a NaZn13-type structure and is represented by a chemical formula of La1-xRx(Fe1-p-qCopMnq)13-ySiyAα, wherein R is one or more selected from elements cerium (Ce), praseodymium (Pr) and neodymium (Nd), A is one or more selected from elements C, H and B, x is in the range of 0≤x≤0.5, y is in the range of 0.8≤y≤2, p is in the range of 0≤p≤0.2, q is in the range of 0≤q≤0.2, α is in the range of 0≤α≤3.0. Using a bonding and thermosetting method, and by means of adjusting the forming pressure, thermosetting temperature, and thermosetting atmosphere, etc., a high-strength, bonded La(Fe, Si)13-based magnetocaloric material can be obtained, which overcomes the frangibility, the intrinsic property, of the magnetocaloric material. At the same time, the magnetic entropy change remains substantially the same, as compared with that before the bonding. The magnetic hysteresis loss declines as the forming pressure increases. And the effective refrigerating capacity, after the maximum loss being deducted, remains unchanged or increases.

公开(公告)号：US20140166159A1

公开(公告)日：2014-06-19

申请号：US14232084

申请日：2012-07-13

申请人： Ling Chen ,  Fengxia Hu ,  Jing Wang ,  Lifu Bao ,  Yingying Zhao ,  Baogen Shen ,  Jirong Sun ,  Huayang Gong

发明人： Ling Chen ,  Fengxia Hu ,  Jing Wang ,  Lifu Bao ,  Yingying Zhao ,  Baogen Shen ,  Jirong Sun ,  Huayang Gong

IPC分类号： H01F1/01

摘要： The invention provides a La(Fe,Si)13-based magnetic refrigeration material prepared from industrial-pure mischmetal as the raw material, wherein the industrial-pure mischmetal is impurity-containing and naturally proportionated La—Ce—Pr—Nd mischmetal or LaCe alloy which, as the intermediate product during rare earth extraction, is extracted from light rare earth ore. The invention further provides the preparation method and use of the material, wherein the preparation method comprises the steps of smelting and annealing industrial-pure mischmetal as the raw material to prepare the La(Fe,Si)13-based magnetic refrigeration material. The presence of impurities in the industrial-pure mischmetal has no impact on the formation of the 1:13 phase, the presence of the first-order phase-transition property and metamagnetic behavior, and thus maintains the giant magnetocaloric effect of the magnetic refrigeration material. The preparation of La(Fe,Si)13-based magnetic refrigeration material from industrial-pure mischmetal reduces the dependency on high-purity elementary rare earth raw material; lowers the cost for manufacturing the material; and thus plays an important role in development of the magnetic refrigeration application of materials.

摘要翻译： 本发明提供了一种以工业纯小米混合物为原料制备的La（Fe，Si）13系磁致冷材料，其中工业纯稀土金属含杂质，天然成比例的La-Ce-Pr-Nd混合稀土或LaCe 作为稀土提取中的中间产物，从轻稀土矿中提取出来的合金。 本发明还提供了该材料的制备方法和用途，其中制备方法包括冶炼和退火工业纯混合稀土作为原料制备La（Fe，Si）13基磁性制冷材料的步骤。 工业纯混合稀土中杂质的存在对1:13相的形成，一阶相变特性和反磁性行为的存在没有影响，从而保持了磁致冷材料的巨磁热效应 。 从工业纯小麦粉中制备La（Fe，Si）13磁性制冷材料减少了对高纯度稀土原料的依赖; 降低制造材料的成本; 从而在材料的磁致冷应用开发中起着重要的作用。

公开(公告)号：US20130200293A1

公开(公告)日：2013-08-08

申请号：US13514960

申请日：2010-12-01

申请人： Jinliang Zhao ,  Baogen Shen ,  Fengxia Hu ,  Jun Shen ,  Yangxian Li ,  Jirong Sun ,  Huayang Gong ,  Jianxiong Yin ,  Xiaohuan Wang

发明人： Jinliang Zhao ,  Baogen Shen ,  Fengxia Hu ,  Jun Shen ,  Yangxian Li ,  Jirong Sun ,  Huayang Gong ,  Jianxiong Yin ,  Xiaohuan Wang

IPC分类号： H01F1/01

CPC分类号： H01F1/012 ,  C01B6/246

摘要： The invention discloses a La(Fe,Si)13-based hydride magnetic refrigeration material comprising multiple interstitial atoms and showing a high-temperature stability and a large magnetic entropy change and the method for preparing the same. By reintroducing interstitial hydrogen atoms into an interstitial master alloy La1-aRaFe13-bSibXc through a hydrogen absorption process, a compound with a chemical formula of La1-aRaFe13-bSibXcHd and a cubic NaZn13-type structure is prepared, wherein R is one or a combination of more than one rare-earth element, X is one or more C, B and the like or their combinations. A desired amount of hydrogen is obtained through a single hydrogen absorption process by means of controlling the hydrogen pressure, temperature and period in the process of hydrogen absorption. The compound can be stable under normal pressure, at a temperature of room temperature to 350° C., that is, the hydrogen atoms can still exist stably in the interstices. The Curie temperature of the compound can be adjusted continuously with a wide range of 180K to 360K by changing its composition. The magnetic entropy change that is more than 2 folds of that of Gd can be obtained around room temperature, and the magnetic hysteresis loss vanishes. In view of the above, this material is a desired magnetic refrigeration material applied at room temperature.

摘要翻译： 本发明公开了一种包含多个间隙原子并显示高温稳定性和大的磁熵变的La（Fe，Si）13基氢化物磁致冷材料及其制备方法。 通过氢吸收法将间隙氢原子重新插入到间隙母合金La1-aRaFe13-bSibXc中，制备化学式为La1-aRaFe13-bSibXcHd的化合物和立方体NaZn13型结构，其中R是一个或组合 的多于一种的稀土元素，X是一个或多个C，B等或它们的组合。 通过控制氢气压力，氢吸收过程中的氢气压力，温度和时间，通过单一氢气吸收过程获得所需量的氢。 化合物在常压下，在室温至350℃的温度下可以是稳定的，即氢原子仍然可以稳定地存在于间隙中。 化合物的居里温度可以通过改变其组成而以180K至360K的宽范围连续调节。 可以在室温附近获得超过Gd的2倍以上的磁熵变，磁滞损耗消失。 鉴于上述，该材料是在室温下施加的期望的磁性制冷材料。