원문정보
초록
영어
The understanding of the strain dependence of critical current, Ic, in the reversible region is important for the evaluation of the performance of coated conductor (CC) tapes in practical applications. In this study, the stress/strain tolerance of Ic in GdBCO CC tapes with stainless steel substrate stabilized by additional Cu and brass laminate was analyzed quantitatively through Ic–strain measurement at 77 K under self-field. The variation in irreversible strain limits of CC tapes by the addition of stabilizing layers was analyzed through the consideration of the pre-strain induced on the GdBCO coating film. The results were then compared with the ones previously reported for GdBCO CC tapes with Hastelloy substrate. As a result, GdBCO CC tapes with stainless steel substrate showed much higher strain tolerance of Ic as compared with those adopting Hastelloy substrate.
목차
1. INTRODUCTION
2. EXPERIMENTAL PROCEDURE
2.1. Samples
2.2. Measurement of mechanical properties
2.3. Measurement of Ic under uniaxial tension
3. RESULTS AND DISCUSSION
3.1. Mechanical properties
3.2. Ic-strain response of GdBCO CC tapes under uniaxial tension
3.3. Strain induced on the GdBCO coating film by the constituent layers
4. CONCLUSIONS
ACKNOWLEDGMENT
REFERENCES