Crystallization Transition Temperature of RRR300 Superconducting Niobium Plate

ZHANG Jiuhai; LI Zhaobo; LI Xiaoping; HUANG Hao; ZHANG Yajun

Jun. 2022

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ZHANG Jiuhai, LI Zhaobo, LI Xiaoping, HUANG Hao, ZHANG Yajun. Crystallization Transition Temperature of RRR300 Superconducting Niobium Plate[J]. Development and Application of Materials, 2022, 37(1): 8-11.

Citation:

ZHANG Jiuhai, LI Zhaobo, LI Xiaoping, HUANG Hao, ZHANG Yajun. Crystallization Transition Temperature of RRR300 Superconducting Niobium Plate[J]. Development and Application of Materials, 2022, 37(1): 8-11.

Citation:

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Crystallization Transition Temperature of RRR300 Superconducting Niobium Plate

1. Ningxia Orient Tantalum Industry Co., Ltd., Shizuishan 753000, China;
2. National Tantalum&State Key Labortory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co., Ltd., Shizuishan 753000, China

Received Date: 2021-07-12
Available Online: 2022-06-11

Abstract

Abstract

The RRR300 superconducting niobium plate is the main material for making superconducting cavities. In order to reduce the resistance when making superconducting cavities, it is necessary to anneal the superconducting niobium plate to improve its plasticity. In the study, RRR300 superconducting niobium plate is annealed at different annealing temperatures, and the changes of microstructure, mechanical properties and RRR of RRR300 superconducting niobium plate annealed are observed.Resultsshow that 600 ℃ is the crystallization transition temperature of RRR300 superconducting niobium plate, and that 750 ℃is the ideal treatment temperature, at which temperature, microstructure, mechanical properties and RRR can reach an ideal state.
- mechanical properties,
- RRR,
- microstructure,
- annealing temperature