Direct measurement of elastic modulus of Nb3Sn using extracted filaments from superconducting composite wire and resin impregnation method
✍ Scribed by M. Hojo; T. Matsuoka; M. Hashimoto; M. Tanaka; M. Sugano; S. Ochiai; K. Miyashita
- Book ID
- 103889680
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 425 KB
- Volume
- 445-448
- Category
- Article
- ISSN
- 0921-4534
No coin nor oath required. For personal study only.
✦ Synopsis
Young's modulus of Nb 3 Sn filaments in Nb 3 Sn/Cu superconducting composite wire was investigated in detail. Nb 3 Sn filaments were first extracted from composite wire. Nitric acid and hydrofluoric acid were used to remove copper stabilizer, Nb 3 Sn/Nb barrier and bronze. Then, Nb 3 Sn filaments were impregnated with epoxy resin to form simple filament bundle composite rods. A large difference in Young's moduli of filaments and epoxy resin enhance the accuracy of the measurement of Nb 3 Sn filament modulus. The ratio of Nb 3 Sn to Nb in filaments and the number of filaments in the fiber bundle composite rods were used in the final calculation of the Young's modulus of Nb 3 Sn. The obtained modulus of 127 GPa was the lower bound of the already reported values.