Structural Investigations and Determination of Current and Voltage Characteristics in Htsc 2G SF12050 Tapes

Archives of Metallurgy and Materials

J. Jędryka¹  M. Szota¹  M. Nabiałek² 

[1] Institute of Materials Engineering, Czestochowa University of Technology, 42-200 Czestochowa, 19 Armii Krajowej Av., Poland;Institute of Physics, Czestochowa University of Technology, 42-200 Czestochowa, 19 Armii Krajowej Av., Poland

关键词: Keywords: high-temperature superconductors;    current and voltage characteristics;    critical current;    analysis of chemical composition;    microstructure;   

DOI  :  10.2478/v10172-011-0115-8

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Investigations of a state-of-the art high-temperature ceramic superconducting tape of SF 12050 series are presented. The study focuses on current and voltage characteristics, examination of microstructure and analysis of chemical composition in superconducting tapes of SF series. In order to measure current parameters, a measuring system was designed to investigate sections of the tapes at the temperature of liquid nitrogen. The system is powered with direct current with parameters I= 0 ÷ 580A and U= 0 ÷ 8V. Measurements of critical current were taken by means of determination of the decline in voltage along the measurement section for the tape with accuracy of 1nV. Analysis of chemical composition was carried out using scanning microscope which features chemical composition microanalyser EDX. The paper presents microscope images which are a result of examination of the structures by means of light microscope and scanning microscope. The method of preparation of superconducting tapes for soldering and the method of selection of solder were also presented.

【 授权许可】

Unknown