吨级工业化制备！我国这一关键材料取得重要进展

Core Insights - Significant progress has been made in the field of key materials for controllable nuclear fusion in China, with the successful development of the second-generation high-temperature superconducting tape core material, Hastelloy C276, marking a crucial step in clean energy material development [1][3] Group 1: Material Development - The research team at the Institute of Metal Research, Chinese Academy of Sciences, has achieved industrial-scale production of high-purity C276 alloy using a self-developed purification technology, breaking the long-standing reliance on imports [1][3] - The team has overcome technical challenges in processing ultra-thin and ultra-long tapes, producing a material with a thickness of only 0.046 mm, a width of 12 mm, and a length exceeding 2000 meters, with a surface smoothness of less than 20 nanometers [3] Group 2: Performance and Applications - The C276 material exhibits extremely high strength at liquid nitrogen temperatures, capable of supporting approximately 19 tons of weight over an area the size of a fingernail, and retains excellent performance even after high-temperature treatment [3] - The domestically produced C276 has been validated by multiple enterprises and has successfully produced high-temperature superconducting tapes that meet international performance standards, being applied in relevant domestic technology projects [3]