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| 1 | Magnetization study of ITER-type internal-Sn Nb3Sn superconducting wire显示文摘 | 张超武 周廉 Andre Sulpice Jean-Louis Soubeyroux Christophe Verwaerde GiaKy Hoang 张平祥 卢亚峰 唐先德 | 2007 | Chinese Physics B2007，16，6： | 3 |
| 2 | 采用中子衍射研究内锡法Nb_3Sn的相形成显示文摘选取2种ITER用内锡法Nb3Sn复合超导线,采用原位中子衍射测量技术检测超导相的形成过程,通过添加第3种元素研究合金化Sn芯和合金化Nb芯对超导相形成过程及超导线超导性能的影响。结果表明:合金化Sn芯比合金化Nb芯丝有利于提高超导性能;少量添加第3种元素Ti与Sn形成合金能显著促进Sn的扩散和A15相的形成,并且能有效抑制Nb3Sn晶粒的生长,因此增加了晶界面积和钉扎力,增强了超导特性,提高了非铜区临界电流密度Jcn。 | 张超武 周廉 唐先德 Jean-Louis Soubeyroux Andre Sulpice 张平祥 卢亚峰 | 2006 | 稀有金属材料与工程2006，35，9： | 1 |
| 3 | Representation of A15 composition and T_C in internal-Sn Nb_3Sn superconducting strands显示文摘Four sets of mono-element (ME) and two kinds of multifilament (MF) internal-Sn Nb3Sn superconducting strands were designed and fabricated through RRP method in which different compoment ratios, various composite configurations and some third element alloying were arranged. All the strand samples underwent a 210°C/50 h + 340°C/25 h thermal duration for Cu-Sn alloying. After that A15 phase formation heat treatment (HT) was applied for which the ME samples were chosen at three reaction temperatures of 675°C, 700°C and 725°C for 100 h and 200 h while the MF samples at four temperatures of 650°C, 675°C, 700°C and 725°C for 128 h and 200 h. The heat-treated samples were examined for A15 phase composition distribution by X-ray EDS. SQUID magnetization measurement was used to determine critical temperature TC. The obtained results demonstrate that for fully-reacted internal-Sn Nb3Sn superconductors the A15 phase composition and the intrinsic property TC are determined by the diffusion and solid state reaction mechanism and are independent of the factors including HT temperature, strand composite component and configuration arrangement, and the third element addition within the experimental range. | Andre SULPICE Jean-Louis SOUBEYROUX Christophe VERWAERDE Gia Ky HOANG | 2010 | Science China(Technological Sciences)2010，53，11： | 1 |
| 4 | 内锡法Nb_3Sn超导线A15相组成及T_C的特征研究(英文)显示文摘设计并制备四组不同组成的内锡法Nb3Sn单组元线和两组不同结构设计的多芯线.先将所有样品进行210℃/50hr+340℃/25hr的Cu-Sn合金化热处理,接着进行A15相成相热处理.四组单组元线的成相热处理程序是在675oC,700oC和725℃三种温度下热处理100小时和200小时;而两组多芯线的成相热处理程序是在675℃,675℃,700℃和725℃四种温度下热处理128小时和200小时.将所有热处理样品采用X-射线EDS进行A15相组成分布测定,采用SQUID磁化法测定临界温度TC.所得结果表明,经过足够热处理时间后各种内锡法Nb3Sn超导线的最终A15相组成和TC与热处理温度、导线复合体组成和结构设计以及第三元素的合金化掺杂无关,而是由这种扩散与固相反应的机制本质所决定的. | 张超武 周廉 Andre Sulpice Jean-Louis Soubeyroux 唐先德 | 2011 | 低温物理学报2011，33，2： | 0 |
| 5 | Effect of Static Mgnetic Fields on the Recalescence Behavior of Undercooled Co-Sn Liquid显示文摘The recalescence behavior of undercooled Co-Sn alloys under static magnetic fields was investigated using glass slag fluxing technique in a 12T superconducting magnet.Results indicated that the nucleation temperature and the highest temperature after recalescence of undercooled melt can be affected by the static magnetic field.The undercooling for Co-Sn alloys keep unchanged when a strong magnetic field was applied while the recalescence extent was reduced.With the increasing Co content for Co-Sn eutectic systems,the effect of the magnetic field on the recalescence was strengthened.We find that the magnetic field has very limited effect on the nucleation temperature on alloys while the highest temperature after recalescence is affected by the field depending on the magnetization difference of the undercooled melt before and after solidification. | WANG Jun BEAUGNON Eric LI Jin-shan HU Rui RIVOIRARD Sophie SULPICE Andre | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 0 |
| 6 | Flux pinning effect of cubic equiaxed morphology and its Ti stabilizing in Nb_3Sn superconductors显示文摘Two sets of internal-Sn Nb3Sn superconducting strands were fabricated through RRP method, one with 2 wt% of Ti alloyed in Sn core and the other just pure Sn. Four reaction temperatures of 650℃, 675℃, 700℃ and 725℃ and 128 h duration were applied for A15 phase formation heat treatment after Cu-Sn alloying procedure of 210℃/50 h + 340℃/25 h. For the heat-treated coil samples, transport non-Cu JC was examined through standard 4-probe technique and phase microstructure was observed by means of Field Emission Scanning Electronic Microscope (FESEM). The obtained results demonstrate that the transport critical current density JC of Nb3Sn superconductors is more importantly determined by the cubic equiaxed crystalline morphology than by grain size. Ti addition in Sn stabilizes the cubic equiaxed phase at lower temperature so that heat reaction temperature is effectively reduced, the flux pinning performance is largely reinforced and the transport critical current density JC is substantially promoted. | Andre SULPICE Jean-Louis SOUBEYROUX Christophe VERWAERDE Gia Ky HOANG | 2009 | Science China(Technological Sciences)2009，52，10： | 0 |
| 7 | ITER用内锡法Nb_3Sn超导线材的不可逆温度研究(英文)显示文摘本文采用超导量子干涉仪(SQUID)测定了一种国际热核聚变实验堆(ITER)项目用内锡法Nb3Sn超导线材的不可逆温度,测量方法是在恒定磁场下循环温度,即将温度以一定间隔从10K上升到20K,然后再返回到10K,测定磁矩的偏离温度.所得结果可用于从生成最佳Nb-Sn相组成方面来优化A15相成相热处理制度.本研究得出的结论是,对于像ITER使用的高场磁体超导线来说,鉴于其需要在较高磁场下有高的临界电流密度,就需要将超导线的热处理温度适当提高一些.本实验所用Nb3Sn超导线材的最适宜热处理制度为675°C/128小时,这样可以得到最佳不可逆温度特性,即最佳的A15相组成. | 张超武 Andre Sulpice 周廉 唐先德 Jean-Louis oubeyroux 张平祥 卢亚峰 | 2006 | 低温物理学报2006，28，4： | 0 |
| 8 | 内锡法Nb_3 Sn超导线材的A15相成相动力学研究(英文)显示文摘为研究Nb3Sn超导材料的A15相成相动力学,设计并制备了四组单组元内锡法(MEIT)超导线。这四组MEIT导线设计了不同的Sn/Cu比,并在一组导线中合金化掺杂了1at%Zr。所有导线样品先经历210°C/50hr+340°C/25hr的Cu-Sn合金化热处理,然后进行A15相成相热处理。选择四种反应温度:650℃,675℃,700℃和725℃,以研究成相热处理温度和时间的影响。用SEM技术测定所有热处理样品的A15相层厚,然后对不同温度下的热处理时间作图,并进行非线性拟合。所得结果表明四种因素促进了A15相的增长:增加反应温度,延长反应时间,增大Sn/Cu比率和合金化掺杂Zr;内锡法Nb3Sn超导线材的成相动力学服从Yn=K(T)t变化关系,A15相生长指数n值受热处理温度和Zr掺杂的影响. | 张超武 周廉 唐先德 Andre Sulpice Jean-Louis Soubeyroux 张平祥 卢亚峰 | 2009 | 低温物理学报2009，31，1： | 0 |
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