원문정보
초록
영어
High Jc Nb3Sn wires, which require a high critical current density (Jc), are essential for advanced applications such as fusion energy systems and accelerators. However, achieving thermal stability to prevent premature quench remains a significant challenge in their development. Previous Distributed Tin (DT) Nb3Sn wires use a bronze matrix (Sn 8–12 at%) with low thermal conductivity, which limits heat transfer in Nb3Sn wire, thereby increasing the possibility of premature quench. To address this issue, Kiswire Advanced Technology (KAT) developed Distributed Barrier Strand (DBS) Nb3Sn wires with enhanced thermal transfer. These wires feature individual Nb barriers surrounding each sub-element and copper channels between sub-elements, allowing rapid heat transfer to the exterior and reducing quench risks. This paper presents the results of a study on the diffusion behavior and electrical property changes of High Jc Nb3Sn DBS wires under various heat treatment schedules. Additionally, optimal heat treatment conditions that enhance Jc characteristics without premature quench were discussed, and EDX analysis results for each heat treatment condition are discussed.
목차
1. INTRODUCTION
2. EXPERIMENTAL METHODS
2.1. Sample Design and Preparation
2.2. Heat Treatment
2.3. Testing and Measurement
3. RESULT AND DISCUSSION
3.1. Critical current(Ic)&Critical current density(Jc)
3.2. Stability Evaluation: Ic & Hysteresis losses
3.3. Cross Section and EDS analysis for samples
4. CONCLUSION
5. REFERENCES