公开(公告)号：US09082538B2

公开(公告)日：2015-07-14

申请号：US13132222

申请日：2008-12-01

申请人： Mi Yan ,  Xiangzhi Zhou ,  Xiongfei Fan ,  Tianyu Ma ,  Wei Luo

发明人： Mi Yan ,  Xiangzhi Zhou ,  Xiongfei Fan ,  Tianyu Ma ,  Wei Luo

IPC分类号： H01F1/057 ,  H01F41/02

CPC分类号： H01F1/0577 ,  H01F41/0266

摘要： A type of sintered Nd—Fe—B permanent magnet with high intrinsic coercivity of about 30KOe or more is produced by dual alloy method. The method comprises the following steps: preparing the powders of master phase alloy and intergranular phase alloy respectively, mixing the powders, compacting the powders in magnetic field, sintering the compacted body at 1050˜1125° C. and annealing at 890-1000° C. and 500-650° C. successively. In the process of preparing the powder of intergranular phase alloy, the nano-powder additive selected from the group consisting of NiAl, TiC, SiC, AlN, TiN, ZrN and the combination thereof is used to modify the powder of intergranular phase alloy.

摘要翻译： 通过双重合金法制造出具有约30KOe以上的高固有矫顽力的烧结Nd-Fe-B永磁体。 该方法包括以下步骤：分别制备主相合金和晶间相合金粉末，混合粉末，在粉末中压实粉末，在1050〜1 125℃烧结压实体，在890-1000℃退火 和500-650℃。 在制备晶间相合金粉末的过程中，使用选自NiAl，TiC，SiC，AlN，TiN，ZrN的纳米粉末添加剂及其组合来改变晶间相合金粉末。

公开(公告)号：US20110234350A1

公开(公告)日：2011-09-29

申请号：US13132266

申请日：2008-12-01

申请人： Mi Yan ,  Xiangzhi Zhou ,  Xiongfei Fan ,  Tianyu Ma ,  Wei Luo

发明人： Mi Yan ,  Xiangzhi Zhou ,  Xiongfei Fan ,  Tianyu Ma ,  Wei Luo

IPC分类号： H01F7/02

CPC分类号： H01F1/0577 ,  H01F41/0266

摘要： A type of sintered Nd—Fe—B permanent magnet with high corrosion resistance is produced by dual alloy method. The method comprises the following steps: preparing the powders of master phase alloy and intergranular phase alloy respectively, mixing the powders, compacting the powders in magnetic field, sintering the compacted body at 1050˜1125° C., and annealing at 920-1020° C. and 500-650° C. successively

摘要翻译： 通过双合金法制造出具有高耐腐蚀性的烧结Nd-Fe-B永磁体。 该方法包括以下步骤：分别制备主相合金和晶间相合金粉末，混合粉末，在粉末中粉碎，在1050-1125℃烧结压实体，在920-1020°退火 C.和500-650℃

公开(公告)号：US09818515B2

公开(公告)日：2017-11-14

申请号：US13132266

申请日：2008-12-01

申请人： Mi Yan ,  Xiangzhi Zhou ,  Xiongfei Fan ,  Tianyu Ma ,  Wei Luo

发明人： Mi Yan ,  Xiangzhi Zhou ,  Xiongfei Fan ,  Tianyu Ma ,  Wei Luo

IPC分类号： H01F7/02 ,  H01F1/057 ,  H01F41/02

CPC分类号： H01F1/0577 ,  H01F41/0266

摘要： A type of sintered Nd—Fe—B permanent magnet with high corrosion resistance is produced by dual alloy method. The method comprises the following steps: preparing the powders of master phase alloy and intergranular phase alloy respectively, mixing the powders, compacting the powders in magnetic field, sintering the compacted body at 1050˜1125° C., and annealing at 920-1020° C. and 500-650° C. successively.

公开(公告)号：US20110233455A1

公开(公告)日：2011-09-29

申请号：US13132222

申请日：2008-12-01

申请人： Mi Yan ,  Xiangzhi Zhou ,  Xiongfei Fan ,  Tianyu Ma ,  Wei Luo

发明人： Mi Yan ,  Xiangzhi Zhou ,  Xiongfei Fan ,  Tianyu Ma ,  Wei Luo

IPC分类号： H01F1/057 ,  B82Y25/00

CPC分类号： H01F1/0577 ,  H01F41/0266

摘要： A type of sintered Nd—Fe—B permanent magnet with high intrinsic coercivity of about 30KOe or more is produced by dual alloy method. The method comprises the following steps: preparing the powders of master phase alloy and intergranular phase alloy respectively, mixing the powders, compacting the powders in magnetic field, sintering the compacted body at 1050˜1125° C. and annealing at 890-1000° C. and 500-650° C. successively. In the process of preparing the powder of intergranular phase alloy, the nano-powder additive selected from the group consisting of NiAl, TiC, SiC, AlN, TiN, ZrN and the combination thereof is used to modify the powder of intergranular phase alloy.

摘要翻译： 通过双重合金法制造出具有约30KOe以上的高固有矫顽力的烧结Nd-Fe-B永磁体。 该方法包括以下步骤：分别制备主相合金和晶间相合金粉末，混合粉末，在粉末中压实粉末，在1050〜1 125℃烧结压实体，在890-1000℃退火 和500-650℃。 在制备晶间相合金粉末的过程中，使用选自NiAl，TiC，SiC，AlN，TiN，ZrN的纳米粉末添加剂及其组合来改变晶间相合金粉末。