Nb/Ti的扩散行为研究  

STUDY ON DIFFUSION BEHAVIOR OF Nb/Ti

作　　者：陈自力[1] 谢宝海[2] 吴晓祖[1] 杜社军[1] 刘向宏[1] 付宝全[1] 

机构地区：[1]西北有色金属研究院超导材料研究所,西安710016 [2]东北大学,沈阳110004

出　　处：《低温物理学报》2005年第2期174-178,共5页Low Temperature Physical Letters

基　　金：国家 8 6 3计划 (N0 .2 0 0 2AA30 6 2 31)资助项目 .~~

摘　　要：为了简化NbTi超导线材的制备工艺,本文利用叠压的Nb/Ti复合片对6 0 0～90 0℃处理3～9小时的扩散样品进行了研究.扫描电镜观察和分析结果表明,80 0℃扩散5小时可以得到厚度较大,Ti含量较高的单β相扩散层;过高的扩散温度或过长的扩散时间仅会增加α+β双相区的厚度,反而会降低NbTi材料的性能.In order to simplify the preparation process of NbTi superconducting wire, the diffusion behavion of Nb/Ti composite sample, which are heat-treated under temperatures between 600℃ and 900℃ for 3～9hours are investigated by scanning electron microscopy(SEM) in this paper. The results indicate that the thicker diffusion layer of single β phase with high Ti content can be obtained in the sample with heat-treatment at 800℃ for 5 hours. The more higher diffusion temperature and more longer sintering time only leady to the increase in the thickness of the layer of α+β phase layer, while the superconducting properties of NbTi may be deteriorated.

关 键 词：行为研究 扫描电镜观察 NBTI 制备工艺 超导线材 分析结果 扩散时间 扩散温度 900 600 复合片 扩散层 双相区 小时 厚度 

分 类 号：TM261[一般工业技术—材料科学与工程]