Abstract
The polymeric solution - sol - gel (SSG) process has been greatly improved by combination of the high homogeneity of SSG and the high efficiency of combustion synthesis to manufacture BiPbSrCaCuO powder with high homogeneity, ultrafine particles and low carbon content for fabrication of high- silver-sheathed bismuth-based 2223 superconducting tape. The improved SSG, termed solution - sol - gel - SHS (SSGS), is realized by ignition of homogeneous wet gel derived from polymeric SSG. X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infared spectroscopy (FTIR) are used to optimize the SSG process and investigate the mechanism of the SSG transition.
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