ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract YBa2Cu3O7−x /Sn composites containing 5, 10, 15, and 20 wt% Sn were prepared by conventional powder metallurgy and pressureless sintering at 950 °C. Sn caused degradation of the ceramic superconductor by its chemical reaction with Ba, whose extent increased with Sn content. Composites with between 5 and 10 wt% Sn preserved their superconducting critical temperature,T c, those with higher Sn content exhibited non-zero residual resistivity at low temperatures. Room-temperature resistivity and its thermal coefficient also increased with Sn content. The brittle behaviour of the composites is attributed to oxidation of Sn during sintering.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01154932
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