2Sr2CaCu2O8+δ (Bi-2212)前驅(qū)粉末，研究了Bi-2212前驅(qū)粉的中間相演化過程。與共沉淀工藝相比較，噴霧熱解工藝提高了前驅(qū)粉末中Bi-2212晶粒的相轉(zhuǎn)變效率；而且噴霧熱解后粉末中殘留的硝酸鹽對Bi-2212晶粒的生長影響較小，共沉淀后粉末中殘留碳酸鹽會阻礙Bi-2212晶粒的形成。采用噴霧熱解法制備的Bi-2212線材的性能與采用傳統(tǒng)共沉淀工藝法制備的線材性能相近，但噴霧熱解工藝的制備效率更高。因此，采用噴霧熱解制備前驅(qū)粉末有助于實現(xiàn)Bi-2212線材的大規(guī)模生產(chǎn)。;Bi2Sr2CaCu2O8+δ (Bi-2212) precursor powders were prepared by spray pyrolysis (SP) and co-precipitation (CP) processes separately. The intermediate phase evolution of Bi-2212 grains was investigated. Compared with that prepared by CP process, the phase formation rate of Bi-2212 grains prepared by SP process is obviously improved. Furthermore, the residual carbonates in CP powders hinder the formation of Bi-2212 grains, while the nitrates in SP powders only have a weak influence on the growth of Bi-2212 grains. The properties of Bi-2212 wires from SP precursor powder are close to those of the ones from CP precursor powder. Considering the much higher fabrication efficiency, SP process is useful for mass production of Bi-2212 wires."/>