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银包套铋系氧化物超导体带材的连接

稀有金属 1994年第5期18卷 375-377页

作者：曾荣周贻茹叶斌周敏张建国王俊升刘安生王晓华华佩文袁冠森有色金属研究总院

研究了银包套铋系氧化物超导体带材的两种连接方式：针焊和超导带材芯部氧化物陶瓷烧结焊。钎焊是用铟或锡钎焊接，其接头存在一定的接头电阻；烧结焊是将未经烧结的加工态银包套带材端部剥去一层银层，露出氧化物陶瓷，再将两根露出部... 详细信息

研究了银包套铋系氧化物超导体带材的两种连接方式：针焊和超导带材芯部氧化物陶瓷烧结焊。钎焊是用铟或锡钎焊接，其接头存在一定的接头电阻；烧结焊是将未经烧结的加工态银包套带材端部剥去一层银层，露出氧化物陶瓷，再将两根露出部分压（轧）接在一起，经与带材相同的烧结工艺进行烧结迟火处理。反复压制、烧结，氧化物陶瓷间发生扩散反应达到连接效果。接头临界电流采用多电位引线法进行测试，接头的临界电流密度达到带材自身的６０％。结合对焊接接头的微观结构分析，提出了改进焊接接头性能的方法。

关键词：银包套铋系超导体带材烧结焊

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锡基巴氏合金涂层火焰喷涂工艺

焊接 2001年第5期 29-30页

作者：秦颢杨中元张宝仁周贻茹马丽心北京有色金属研究总院 100088 黑龙江商学院哈尔滨市150076

通过实验确定影响火焰喷涂锡基巴氏合金涂层质量的主要工艺参数 ,采用碳化焰、送丝速度在 10m/min左右、轴向辅助吹风及相应喷涂操作技巧。

关键词：火焰喷涂锡基巴氏合金工艺参数轴瓦

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Ag对Bi(2223)带材超导电性的影响

北方工业大学学报 1997年第3期9卷 36-39页

作者：张进治何艾生付雪奎华佩文周贻茹北方工业大学基础科学学院北京石景山100041 北京有色金属研究总院北京100088

研究了掺Ag对Bi（2223）带材的致密度、织构、临界温度（Tc）、临界电流（Jc）及临界电流-磁场强度（Jc-B）等超导电性的影响，从中得出了掺Ag量的大小和热处理参数对提高Bi（2223）带材的性能是非常重要的结果．

关键词：临界温度临界电流银铋系超导体超导电性

Properties and Microstructuresof Three Kinds of Silversheathed Bi-2223 Tapes

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Rare Metals 1994年第1期13卷 63-66页

作者：曾荣周贻茹叶斌周敏张建国王俊升刘安生李镇恒袁冠森有色金属研究总院北京 100088 有色金属研究总院北京

Three kinds of silver-sheathed Bi(2223) oxide superconductor tapes (single-core tape, Ag-powder-added tape and multifilamentary type) were successfully prepared, namely, through the powder-in-tube method. The critical current density (Jc), the Jc-B characteristics, microstructures and the relation between Jc and strain of three kinds of tapes were evaluated and compared. The maximum Jc of three kinds of tapes at 77.7 K in zero magnetic field are 28700 A/cm2 for single-core tape, 20800 A/cm2 for Ag-powder-added tape, 11700 A/cm2 for multifilamentary tape. Single-core tapes exhibit high Jc values and good Jc-B characteristics.

关键词： Bismuth Microstructure Performance Silver Tape coatings Tapes

银包套BPSCCO高温超导带材中的位错研究

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电子显微学报 1993年第2期12卷 135-135页

作者：邵贝羚刘安生周贻茹叶斌曾荣北京有色金属研究总院北京100088

Ag包套(Bi,Pb)_2Sr_2Ca_2Cu_3O_x高温超导带材由于其临界电流的优越,具有较强的应用前景。带材的微观组织结构是影响其临界电流密度的决定因素之一,因此深入研究带材中的晶体缺陷、位错特征对彻底揭示材料的高温超导机理是十分必要的。... 详细信息

Ag包套(Bi,Pb)_2Sr_2Ca_2Cu_3O_x高温超导带材由于其临界电流的优越,具有较强的应用前景。带材的微观组织结构是影响其临界电流密度的决定因素之一,因此深入研究带材中的晶体缺陷、位错特征对彻底揭示材料的高温超导机理是十分必要的。由于Ag包套(Bi,Pb)_2Sr_2Ca_2CU_3O_x高温超导带材的微观结构的复杂性,对材料中位错的研究还很不透彻。本工作利用透射电子显微镜(JEM-2000Fx)较深入地观察和研究了Ag包套Bi系高温超导带材中的位错特征,并对位错的形成机制进行了讨论。

关键词：超导体 BPSCCO 银包套带材位错

TEM Study on the Ag-BSCCO Interface of Silver-sheathed Bi-2223 Superconducting Tape

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Rare Metals 1997年第2期16卷 60-62页

作者：王敬刘安生王晓华周贻茹邵贝羚曾荣袁冠森北京有色金属研究总院北京

The Ag/Bi Sr Ca Cu O (BSCCO) interfaces of silver sheathed Bi 2223 superconducting tapes were studied by using transmission electron microscopy (TEM). Most of the interfaces are even and well bonded. The (001) planes of 2223 phase are parallel to the interfaces. Some step like interfaces were observed. There is occasionally a layer of one half unit cell of 2201 phase at the interface. No orientation relationship between the superconductor and the silver exists in the tapes.

关键词： Interface Bi 2223 superconductor Microstructure

J_c-B Characteristics and Microstructure Dependence of J_c of High J_c Bi-based Superconducting Oxide Tapes

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Rare Metals 1993年第2期12卷 131-136页

作者：叶斌周贻茹曾荣周敏张建国刘安生王俊升袁冠森崔长庚李山林张进龙景秀年金新 General Research Institute for Non-ferrous Metals Beijing 100088.P.R.China Institute of Physics Chinese Academy of Sciences.Beijing 100080 China Department of Physics Nanjing University.Nanjin 210008China

Bi-based 2223 superconducting tapes with high critical current densities were prepared by silver-sheathing method. The relationship between processing, microstructure and property was discussed. The results of critical current density measurement at 77.7K with different applied magnetic field are as follows: Jc=2.87×104A/cm2 (OT) and Jc=4100A/cm2. Jc and Jc-B characteristics were obviously improved with temperature decreasing form 77K to 4.2K. Microstructure observations indicate that intermediate pressing with subsequent heat-treating can lower the porosity of superconductor inside the silver sheath. and reduce the amount and size of non-superconducting phases, leading to the formation of a strong c-axis-oriented texture and the emergence of high dislocation density within the 2223 grains, and consequently the Jc and Jc-B characteristics were improved.

关键词： Bismuth alloys Electric tapes Microstructure Oxides Performance

Preparation,Microstructure and Properties of Ag-sheathed Bi(Pb)-Sr-Ca-Cu-O Superconductor Tapes

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Rare Metals 1992年第2期11卷 120-124页

作者：周贻茹叶斌张建国王俊升许亚蓝张宝仁刘安生 208 Lab. General Research Institute for Non-ferrous MetalsBeijing100088 P.R.China

The process to obtain high T(110K)phase quickly,the microstructure and properties of Ag-sheathed Bi(Pb)-Sr-Ca-Cu-O superconductor tapes have been *** was found that the formation time of the high T_c phase was greatly shortened by the addition of more Ca and Cu to the nominal composition of Bi(Pb):Sr :Ca:Cu=2:2:2:3 and the adoption of appropriate sintering temperature and cooling rate. Superconductor powder with predominant high T,phase was prepared after a 840 C/50 h *** J of the Ag-sheathed tapes and the magnetic field dependence of Jwere obviously improved by repeatedly pres- sing and *** maximum transport current density at 77K in a zero magnetic field was 12,200 A/cm^2. The magnetic dependence of Jwas summarized as follows:6.450 A/cm^(2)(B⊥1.B∥S.0.1T)1,810 A/cm^2 (B⊥1.B∥S,1T),390 A/cm^2(B⊥1.B∥S,2T)(B:magnetic field.1:electric current.S:surface of tapes).The improvement of Jwas attributed to the formation of the plate-like structure with homogeneous composition distribution and the strong c-axis texture.

关键词： Superconductor Ag-sheathed tape High T_ephase Critical current density

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超音速喷涂Ni／Cu界面结构研究

电子显微学报 1996年第6期15卷 506-506页

作者：邵贝羚刘安生王晓华邹琳瑛王敬张建国施昌勇周贻茹有色金属研究总院

超音速喷涂Ｎｉ／Ｃｕ界面结构研究＊邵贝羚刘安生王晓华邹琳瑛王敬张建国施昌勇周贻茹（有色金属研究总院，北京１０００８８）超音速火焰喷涂（ＨＶＯＦ）技术在制备高性能金属陶瓷涂层方面已成为不可替代的先进技术。同时，ＨＶＯＦ... 详细信息

超音速喷涂Ｎｉ／Ｃｕ界面结构研究＊邵贝羚刘安生王晓华邹琳瑛王敬张建国施昌勇周贻茹（有色金属研究总院，北京１０００８８）超音速火焰喷涂（ＨＶＯＦ）技术在制备高性能金属陶瓷涂层方面已成为不可替代的先进技术。同时，ＨＶＯＦ金属涂层的研究也开始受到关注。其耐...

关键词：金属涂层 HVOF 界石结构