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Technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding
The invention discloses a technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding and belongs to the superconducting electric technical field. The technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding is characterized in that the silver layer outside the strip is diffused to realize connection under the pressurization action of a connecting fixture; the connection temperature is 400 DEG C, the heating rate is 1800 DEG C/h, atmosphere is oxygen, the gas flow is 400ml/min, and connection length is 1cm; after heating is completed, oxygen introduction needs to be stopped, so that the oxygen in a pipe is static, a fixture is unfolded when natural cooling is carried out for 10 hours, and a sample is taken out; and by virtue of the parameters, joint resistance can be 10-7ohm when the connection length is 1cm. The technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding has the advantages that the silver layer outside the strip is diffused to realize connection when a to-be-connected superconducting strip is continuously pressurized by the connecting fixture, use of intermediate welding flux is avoided, the superconducting strip with a connection joint being 1cm long is obtained, operation is convenient, and the connection joint is stable in quality, so that the technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding has a good application prospect.
Technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding
The invention discloses a technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding and belongs to the superconducting electric technical field. The technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding is characterized in that the silver layer outside the strip is diffused to realize connection under the pressurization action of a connecting fixture; the connection temperature is 400 DEG C, the heating rate is 1800 DEG C/h, atmosphere is oxygen, the gas flow is 400ml/min, and connection length is 1cm; after heating is completed, oxygen introduction needs to be stopped, so that the oxygen in a pipe is static, a fixture is unfolded when natural cooling is carried out for 10 hours, and a sample is taken out; and by virtue of the parameters, joint resistance can be 10-7ohm when the connection length is 1cm. The technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding has the advantages that the silver layer outside the strip is diffused to realize connection when a to-be-connected superconducting strip is continuously pressurized by the connecting fixture, use of intermediate welding flux is avoided, the superconducting strip with a connection joint being 1cm long is obtained, operation is convenient, and the connection joint is stable in quality, so that the technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding has a good application prospect.
Technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding
CAI CHUANBING (Autor:in) / ZHANG ZICHEN (Autor:in) / MA HONGLIANG (Autor:in)
03.06.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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