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1.发明授权Polycrystalline foams exhibiting giant magnetic-field-induced deformation and methods of making and using same 有权表现出巨磁场诱导变形的多晶泡沫体及其制造和使用方法公开(公告)号：US08586194B2
公开(公告)日：2013-11-19
申请号：US12840203
申请日：2010-07-20
申请人： Peter Mullner , Markus Chmielus , Cassie Witherspoon , David C. Dunand , Xuexi Zhang , Yuttanant Boonyongmaneerat
发明人： Peter Mullner , Markus Chmielus , Cassie Witherspoon , David C. Dunand , Xuexi Zhang , Yuttanant Boonyongmaneerat
IPC分类号： B32B5/18
CPC分类号： C22C19/00 , B22F3/1115 , B22F3/1121 , C22C1/0433 , C22C38/00 , C22C2202/02 , H01F1/0308 , Y10T428/12479 , Y10T428/12681 , Y10T428/12771 , Y10T428/12861 , Y10T428/12931 , Y10T428/12951
摘要： Magnetic materials and methods exhibit large magnetic-field-induced deformation/strain (MFIS) through the magnetic-field-induced motion of crystallographic interfaces. The preferred materials are porous, polycrystalline composite structures of nodes connected by struts wherein the struts may be monocrystalline or polycrystalline. The materials are preferably made from magnetic shape memory alloy, including polycrystalline Ni—Mn—Ga, formed into an open-pore foam, for example, by space-holder technique. Removal of constraints that interfere with MFIS has been accomplished by introducing pores with sizes similar to grains, resulting in MFIS values of 0.12% in polycrystalline Ni—Mn—Ga foams, close to the best commercial magnetostrictive materials. Further removal of constraints has been accomplished by introducing pores smaller than the grain size, dramatically increasing MFIS to 2.0-8.7%. These strains, which remain stable over >200,000 cycles, are much larger than those of any polycrystalline, active material.
摘要翻译： 磁性材料和方法通过磁场诱导的晶体界面运动表现出大的磁场诱导的变形/应变（MFIS）。 优选的材料是通过支柱连接的节点的多孔，多晶复合结构，其中支柱可以是单晶或多晶。 这些材料优选由例如通过空间保持器技术形成为开孔泡沫的多晶Ni-Mn-Ga的磁性形状记忆合金制成。 通过引入尺寸与颗粒大小相似的孔，可以去除干扰MFIS的约束，导致多晶Ni-Mn-Ga泡沫中的MFIS值为0.12％，接近最好的商业磁致伸缩材料。 通过引入小于晶粒尺寸的孔，已经进一步去除约束，使MFIS显着提高到2.0-8.7％。 这些菌株在超过20万次循环中保持稳定，远远大于任何多晶活性物质。
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公开(公告)号：US20090092817A1
公开(公告)日：2009-04-09
申请号：US12203112
申请日：2008-09-02
IPC分类号： B32B3/26
CPC分类号： C22C19/00 , C22C38/00 , H01F1/0308 , H01F1/408 , Y10T428/12479 , Y10T428/12681 , Y10T428/12771 , Y10T428/12861 , Y10T428/12931 , Y10T428/12944 , Y10T428/12951 , Y10T428/249953
摘要： A magnetic materials construct and a method to produce the construct are disclosed. The construct exhibits large magnetic-field-induced deformation through the magnetic-field-induced motion of crystallographic interfaces. The construct is a porous, polycrystalline composite structure of nodes connected by struts wherein the struts may be monocrystalline or polycrystalline. If the struts are polycrystalline, they have a “bamboo” microstructure wherein the grain boundaries traverse the entire width of the strut. The material from which the construct is made is preferably a magnetic shape memory alloy, including polycrystalline Ni—Mn—Ga. The construct is preferably an open-pore foam. The foam is preferably produced with a space-holder technique. Space holders may be dissolvable ceramics and salts including NaAlO2.
摘要翻译： 公开了一种磁性材料结构和一种制备该构造体的方法。 该结构通过磁场诱导的晶体界面运动表现出大的磁场诱导变形。 该结构是通过支柱连接的节点的多孔多晶复合结构，其中支柱可以是单晶或多晶。 如果支柱是多晶的，则它们具有“竹”微结构，其中晶界穿过支柱的整个宽度。 制造构造物的材料优选为包括多晶Ni-Mn-Ga的磁性形状记忆合金。 该构造物优选为开孔泡沫。 泡沫优选用空间保持器技术制造。 空间支架可以是可溶解的陶瓷和盐，包括NaAlO 2。
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3.发明申请Transient Migrating Phase Low Temperature Joining of Co-Sintered Particulate Materials Including a Chemical Reaction 审中-公开包含化学反应的共烧结颗粒材料的瞬态迁移相低温接合公开(公告)号：US20110268975A1
公开(公告)日：2011-11-03
申请号：US11795844
申请日：2006-01-25
IPC分类号： B32B17/06
CPC分类号： C04B37/021 , B32B2311/06 , B32B2311/22 , C04B37/025 , C04B37/026 , C04B2235/3217 , C04B2235/3418 , C04B2235/6582 , C04B2235/96 , C04B2237/062 , C04B2237/10 , C04B2237/122 , C04B2237/34 , C04B2237/343 , C04B2237/348 , C04B2237/403 , C04B2237/405 , C04B2237/408 , C04B2237/60
摘要： A method joins bodies of two component materials, at least one of which is a particulate, at low temperature. A third component has a lower melting point than either of the components. The third component chemically reacts with one or both of the first two to form material with a higher melting point than the original third component. The system is heated to at or above that melting point. The third component melts and flows, migrating to fill spaces between particles. The fluid should migrate to and across the interface, bridging the two component materials. The migrating phase network connects across the joining interface. The reaction product remains solid at temperatures above the original melting point of the third component. The migrating phase can be the liquefied form of the third component, or, a glass, heated to act as a supercooled liquid.
摘要翻译： 在低温下，一种方法连接两种组分材料的物体，其中至少一种是微粒。 第三组分的熔点比任一组分低。 第三组分与前两种中的一种或两种发生化学反应以形成具有比原始第三组分更高的熔点的材料。 将该系统加热至该熔点以上。 第三个组分熔化并流动，迁移到填充颗粒之间的空间。 流体应迁移到界面并跨过界面，桥接两种组分材料。 迁移阶段网络通过连接界面进行连接。 反应产物在高于第三组分原始熔点的温度下保持固体。 迁移相可以是第三组分的液化形式，或加热以充当过冷液体的玻璃。
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公开(公告)号：US07964290B2
公开(公告)日：2011-06-21
申请号：US12203112
申请日：2008-09-02
IPC分类号： B32B5/18
CPC分类号： C22C19/00 , C22C38/00 , H01F1/0308 , H01F1/408 , Y10T428/12479 , Y10T428/12681 , Y10T428/12771 , Y10T428/12861 , Y10T428/12931 , Y10T428/12944 , Y10T428/12951 , Y10T428/249953
摘要： A magnetic materials construct and a method to produce the construct are disclosed. The construct exhibits large magnetic-field-induced deformation through the magnetic-field-induced motion of crystallographic interfaces. The construct is a porous, polycrystalline composite structure of nodes connected by struts wherein the struts may be monocrystalline or polycrystalline. If the struts are polycrystalline, they have a “bamboo” microstructure wherein the grain boundaries traverse the entire width of the strut. The material from which the construct is made is preferably a magnetic shape memory alloy, including polycrystalline Ni—Mn—Ga. The construct is preferably an open-pore foam. The foam is preferably produced with a space-holder technique. Space holders may be dissolvable ceramics and salts including NaAlO2.
摘要翻译： 公开了一种磁性材料结构和一种制备该构造体的方法。 该结构通过磁场诱导的晶体界面运动表现出大的磁场诱导变形。 该结构是通过支柱连接的节点的多孔多晶复合结构，其中支柱可以是单晶或多晶。 如果支柱是多晶的，则它们具有“竹”微结构，其中晶界穿过支柱的整个宽度。 制造构造物的材料优选为包括多晶Ni-Mn-Ga的磁性形状记忆合金。 该构造物优选为开孔泡沫。 泡沫优选用空间保持器技术制造。 空间支架可以是可溶解的陶瓷和盐，包括NaAlO 2。
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5.发明申请POLYCRYSTALLINE FOAMS EXHIBITING GIANT MAGNETIC-FIELD-INDUCED DEFORMATION AND METHODS OF MAKING AND USING SAME 有权多晶胶片展示巨大的磁场诱导性变形及其制造和使用方法公开(公告)号：US20110064965A1
公开(公告)日：2011-03-17
申请号：US12840203
申请日：2010-07-20
申请人： Peter Mullner , Markus Chmielus , Cassie Witherspoon , David C. Dunand , Xuexi Zhang , Yuttanant Boonyongmaneerat
发明人： Peter Mullner , Markus Chmielus , Cassie Witherspoon , David C. Dunand , Xuexi Zhang , Yuttanant Boonyongmaneerat
CPC分类号： C22C19/00 , B22F3/1115 , B22F3/1121 , C22C1/0433 , C22C38/00 , C22C2202/02 , H01F1/0308 , Y10T428/12479 , Y10T428/12681 , Y10T428/12771 , Y10T428/12861 , Y10T428/12931 , Y10T428/12951
摘要： Magnetic materials and methods exhibit large magnetic-field-induced deformation/strain (MFIS) through the magnetic-field-induced motion of crystallographic interfaces. The preferred materials are porous, polycrystalline composite structures of nodes connected by struts wherein the struts may be monocrystalline or polycrystalline. The materials are preferably made from magnetic shape memory alloy, including polycrystalline Ni—Mn—Ga, formed into an open-pore foam, for example, by space-holder technique. Removal of constraints that interfere with MFIS has been accomplished by introducing pores with sizes similar to grains, resulting in MFIS values of 0.12% in polycrystalline Ni—Mn—Ga foams, close to the best commercial magnetostrictive materials. Further removal of constraints has been accomplished by introducing pores smaller than the grain size, dramatically increasing MFIS to 2.0-8.7%. These strains, which remain stable over >200,000 cycles, are much larger than those of any polycrystalline, active material.
摘要翻译： 磁性材料和方法通过磁场诱导的晶体界面运动表现出大的磁场诱导的变形/应变（MFIS）。 优选的材料是通过支柱连接的节点的多孔，多晶复合结构，其中支柱可以是单晶或多晶。 这些材料优选由例如通过空间保持器技术形成为开孔泡沫的多晶Ni-Mn-Ga的磁性形状记忆合金制成。 通过引入尺寸与颗粒大小相似的孔，可以去除干扰MFIS的约束，导致多晶Ni-Mn-Ga泡沫中的MFIS值为0.12％，接近最好的商业磁致伸缩材料。 通过引入小于晶粒尺寸的孔，已经进一步去除约束，使MFIS显着提高到2.0-8.7％。 这些菌株在超过20万次循环中保持稳定，远远大于任何多晶活性物质。
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