Abstract
Abstract An advanced chemical vapor deposition (CVD) system has been developed for rapid formation of a superconducting oxide tape on long metal substrates. In this system, a mixed fine powder of source materials was slowly fed to a vaporizer with a carrier gas by a fine powder feeder, and the source gas from the vaporizer was continuously introduced to the reactor with oxygen gas. This system has a long substrate conveying equipment. By this system, using Hastelloy C-276 tapes with YSZ buffer as substrates, 1 meter long superconducting Y-Ba-Cu-O (YBCO) tapes could be obtained. These tapes had a critical temperature (Tc) with zero resistivity above 77.3 K and the best part of the tape had a Tc at 84 K and a critical current density (Jc) of 330 A/cm2 (77.3 K, 0 T).
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