GB/T 22587-2017
Matrix to superconductor volume ratio measurement.Copper to superconductor volume ratio of Cu/Nb-Ti composite superconducting wires
- Standard No.
- GB/T 22587-2017
- Language
- Chinese
- Release Date
- 2017
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Lastest
- GB/T 22587-2017
- Replace
- GB/T 22587-2008
- Scope
- This standard specifies the test method for copper-super[volume] ratio in Cu/Nb-Ti composite superconducting wires. This method and the optional method provided in Appendix A are suitable for cross-sectional area of 0.1 mm2~3 mm2, Nb-Ti wire diameter of 2 μm~200 μm, copper-super [volume] Cu/Nb-Ti composite superconducting wire with ratio not less than 0.5. The Cu/Nb-Ti composite test conductors of this standard have a single structure with circular or rectangular cross-section. This standard uses nitric acid to dissolve copper and gives tolerances and other specific limits for routine testing. Cu/Nb-Ti composite superconducting wires whose cross-sectional area, wire diameter and copper-super[volume] ratio exceed this range can also be measured by this method, but the uncertainty will be reduced. In addition, in special cases, for conductors outside the specified range, there may be special geometric shapes of the test samples, but for the sake of simplicity and keeping the uncertainty low, this standard does not deal with such issues. With appropriate amendments, the test methods given in this standard can be applied to other composite superconducting wires.
GB/T 22587-2017 Referenced Document
- GB/T 13811-2003 Electrotechnical terminology Superconductivity
GB/T 22587-2017 history
- 2017 GB/T 22587-2017 Matrix to superconductor volume ratio measurement.Copper to superconductor volume ratio of Cu/Nb-Ti composite superconducting wires
- 2008 GB/T 22587-2008 Matrix to superconductor volume ratio measurement.Copper to superconductor volume ratio of Cu/Nb-Ti composite superconductors