公开(公告)号：US20170211167A1

公开(公告)日：2017-07-27

申请号：US15326473

申请日：2015-09-30

Applicant: HEYE SPECIAL STEEL CO., LTD ,  ADVANCED TECHNOLOGY&MATERIALS CO.,LTD

Inventor： Xiaoming Li ,  Lizhi Wu ,  Hailin Zhong ,  Xuebing Wang ,  Chunjiang Kuang ,  Yucheng Fang

IPC: C22C38/36 ,  C22C38/26 ,  C22C38/24 ,  C22C38/22 ,  B22F9/08 ,  C22C38/02 ,  C22C38/00 ,  B22F1/00 ,  B22F3/15 ,  C22C38/30 ,  C22C38/04

CPC classification number: C22C38/36 ,  B22F1/0003 ,  B22F3/15 ,  B22F9/082 ,  B22F2005/002 ,  B22F2009/0824 ,  B22F2009/0848 ,  B22F2009/0876 ,  B22F2201/02 ,  B22F2301/35 ,  B22F2998/10 ,  C22C33/0278 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/30

Abstract: A powder metallurgy wear-resistant tool steel includes chemical components by mass percent of: V: 12.2%-16.2%, Nb: 1.1%-3.2%, C: 2.6%-4.0%, Si: ≦2.0%, Mn: 0.2%-1.5%, Cr: 4.0%-5.6%, Mo: ≦3.0%, W: 0.1%-1.0%, Co: 0.05%-0.5%, N: 0.05%-0.7%, with balance iron and impurities; wherein a carbide component of the powder metallurgy wear-resistant tool steel is an MX carbide with a NaCl type face-centered cubic lattice structure; wherein an M element of the MX carbide comprises V and Nb, and an X element comprises C and N.

公开(公告)号：US20170204502A1

公开(公告)日：2017-07-20

申请号：US15326474

申请日：2015-09-30

Applicant: HEYE SPECIAL STEEL CO., LTD. ,  ADVANCED TECHNOLOGY&MATERIALS CO., LTD.

Inventor： Lizhi Wu ,  Xiaoming Li ,  Yunfeng Yang ,  Chunjiang Kuang ,  Dongmei Xin ,  Liqing Shao ,  Yucheng Fang

IPC: C22C38/30 ,  C22C38/24 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00 ,  C22C38/26 ,  C22C38/22

CPC classification number: C22C38/30 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26

Abstract: A spray-formed high-speed steel includes chemical components by mass percent of: C: 0.85-1.65%, Si: 0.1-1.2%, Cr: 3.5-8.0%, W: 4.0-6.5%, Mo: 4.5-7.0%, V: 1.0-4.0%, Co: 1.0-8.0%, Mn: 0.2-0.8%, and Nb: 0.2-3.5%, with balance of iron and impurities.

公开(公告)号：US20170037504A1

公开(公告)日：2017-02-09

申请号：US15300683

申请日：2015-11-06

Applicant: ADVANCED TECHNOLOGY & MATERIALS CO., LTD.

Inventor： Lei ZHOU ,  Tao LIU ,  De LIN ,  Xiaojun YU

IPC: C23C14/24 ,  C23C14/58 ,  C23C14/02 ,  H01F41/02 ,  C23C14/16

CPC classification number: C23C14/24 ,  C23C14/021 ,  C23C14/16 ,  C23C14/5806 ,  H01F41/0266 ,  H01F41/0293

Abstract: The present application provides a method for preparing a rare-earth permanent magnetic material with grain boundary diffusion using composite target by vapor deposition, in which the composite target is evaporated and attached to the surface of the NdFeB magnet, and in which medium-high temperature treatment and low temperature aging treatment are employed, resulting in that the coercive force of the magnet is improved significantly and the remanence and the magnetic energy product substantially are not reduced. The advantageous effects of the present application is as follows: the coercive force of the magnet is improved, and meanwhile the defects such as melting pits and crystal grain growth and the like caused by high temperature treatment for the long time are eliminated, and the usage amount of heavy rare-earth is greatly reduced, thereby lowering the cost of the product.

Abstract translation: 本申请提供了一种通过气相沉积制备具有使用复合靶的晶界扩散的稀土永磁材料的方法，其中复合靶被蒸发并附着到NdFeB磁体的表面，并且其中中高温 采用了处理和低温老化处理，导致磁体的矫顽力得到显着改善，并且剩磁和磁能积基本上不降低。 本申请的有益效果如下：提高了磁体的矫顽力，同时消除了长时间由高温处理引起的熔点，晶粒生长等缺陷，使用 重稀土量大大降低，降低了产品成本。