Year: 2025
Type: article
Abstract: This paper reviews the Pb- and Cd-free NbTi/Nb3Sn superconducting joint technology and the related technologies. The key to the Pb-free joining process is the use of a high-temperature tolerable Nb superconducting alloy as an intermediate material, which enables metallic bonding between the Nb3Sn wire and the Nb superconducting alloy intermediate material through a chemical reaction, and between the NbTi wire and the Nb superconducting alloy intermediate material by pressure welding. Consequently, the NbTi/Nb3Sn superconducting joint is realized. This novel technology is expected to be used in the world’s first Pb-free, environmentally friendly NMR superconducting magnets.
DOI: 10.2221/jcsj.60.141
Author: Nobuya BANNO
Institution: National Institute for Materials Science
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4412687100