BS EN 61788-2-2007 超导性.临界电流测量.Nb3Sn复合超导体的直流(D.C.)临界电流

标准号：BS EN 61788-2-2007
中文标准名称：超导性.临界电流测量.Nb3Sn复合超导体的直流(D.C.)临界电流
英文标准名称：Superconductivity - Critical current measurement - D.C. critical current of Nb3Sn composite superconductors
标准类型：K04
发布日期：2007/2/28 12:00:00
实施日期：2007/2/28 12:00:00
中国标准分类号：K04
国际标准分类号：29.050
引用标准：IEC 60050-815-2000
适用范围：This part of IEC 61788 covers a test method for the determination of the d.c. critical current of Nb3Sn composite superconductors which are fabricated by either the bronze process or the internal tin diffusion process and have a copper/non-copper ratio larger than 0,2.This method is intended for use with superconductors which have critical currents of less than 1 000 A and n-values larger than 12 under standard test conditions and at magnetic fields of less than or equal to 0,7 times the upper critical magnetic field. The test specimen is immersed in a liquid helium bath at a known temperature during testing. The Nb