专利名称 ---【 A NANO CRYSTALS COPPER MATERIAL WITH SUPER HIGH STRENGTH AND CONDUCTIVITY AND METHOD OF PREPARING THEREOF 】

基本信息
申请号
EP20030757640
申请日
2003.10.16
公开(公告)号
EP1567691(B1)
公开(公告)日
2012.08.22
申请(专利权)人
中国科学院金属研究所
申请人地址
发明人
LU, LEI;SI, XIAO;SHEN, YONGFENG;LU, KE; 专利类型 EP
摘要
The present invention relates to a nanocrystalline metallic material, particularly to nano-twin copper material with ultrahigh strength and high electrical conductivity and its preparation method. High-purity polycrystalline Cu material with a microstructure of roughly equiaxed submicron-sized grains (300-1000 nm) has been produced by pulsed electrodeposition technique, by which high density of grown-in twins with nano-scale twin spacing were induced in the grains. Inside each grain, there are high densities of grown-in twin lamellae. The twin lamellae with the same orientations are inter-parallel, and the twin spacing ranges from several nanometers to 100 nm with a length of 100-500 nm. This invented Cu material has a more excellent performance than existing ones. The tensile yield strength and ultimate strength of the present Cu material at room-temperature can be as high as 900 MPa and 1086 MPa, respectively, and such a high tensile strength cannot be achieved for Cu materials with the same chemical composition prepared by any traditional methods. Meanwhile, the present Cu sample also keeps a good electrical conductivity, for example, the room-temperature resistivity is (1.75+/-0.02) x 10<-8> OMEGA .m, corresponding to 96% IACS, which is close to that of conventional coarse-grained Cu.
主权项

 

IPC信息
IPC主分类号
C25D1/04
IPC分类号
C25D1/04;C25C1/12;C22C1/00;C22F1/08

 

法律状态信息
法律状态公告日
2012.08.22
法律状态
授权 法律状态信息
授权

 

代理信息
代理机构名称
代理人姓名

 

被引专利信息
引用阶段 被引时间 专利号 申请人 公开时间

 

被引非专利信息
引用阶段 被引时间 被引文档类型 被引文档信息
     分享到:0


| 联系我们 | 网站地图 | 版权声明 |

版权:中国科学院 主办:中国科学院科技促进发展局 承办:中国科学院成都文献情报中心 蜀ICP备05003827号-12

建议使用1024×768 分辨率 IE6.0以上版本浏览器