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- W16670729 abstract "So far, aluminum-containing superconductors showed excellent critical fields and temperatures. Powder Metallurgy shows the most promise in producing these particular kinds of superconductors in the near future. The scope of this research is to apply a kinetic study to observe the behavior of the Nb(Al,Si) system at elevated temperatures. From such observations, an optimized method of obtaining the A15 superconducting phase can be achieved. This study has resulted in a two step heat treatment to obtain the A15 phase. For the primary heat treatment of infiltrated rods, 600/sup 0/C for 11 hours or 650/sup 0/C for 1 hour was found suitable to form a barrier of intermetallic compound around the pores. For the secondary heat treatment, 1700/sup 0/C for 15 seconds resulted in the formation of the A15 superconducting phase with a critical temperature of 18.25/sup 0/K. A15 formation for wires is similar to infiltrated rods. The only difference is the diffusion path which is now much shorter. 600/sup 0/C for 1 hour was found suitable for the primary heat treatment and 1700/sup 0/C for 15 seconds was the most suitable for the secondary heat treatment. The highest critical temperature found thus far was 18.78/sup 0/K." @default.
- W16670729 created "2016-06-24" @default.
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- W16670729 date "1978-12-01" @default.
- W16670729 modified "2023-09-26" @default.
- W16670729 title "Kinetic study of the formation of the superconducting A15 phase in the Nb-Al-Si system" @default.
- W16670729 doi "https://doi.org/10.2172/5696078" @default.
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