SuNAM has long been producing Coated Conductors(CC) via proprietary process of Reactive Co-evaporation-Deposition and Reaction(RCE-DR) method. It is a quite successful approach for grid applications such as superconducting cables and Fault Current Limiters(FCL). Now, we have two RCE-DR machines to address the demand from grid applications, which produce high critical current(>750 A / 12 mm-w), uniform CCs. Also, we tried several rare earths and mixtures, and an artificial pinning center(APC) generating elements(Zr, Hf, …) to extend our catalog for wide-ranging applications.
For higher field applications, we set up a PLD system with XeCl excimer laser of high power. Characteristics of CCs obtained from PLD was analyzed and presented in this talk. We compare transport properties, microstructures, and electromechanical characteristics of CCs from both PLD and RCE-DR systems and the possibility and potential of hybridizing PLD and RCE-DR in terms of performance enhancement and production efficiency are also presented.
Part of this work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022M3I9A1076681).