【摘要】 在化学动力学基础上，指出了Bi系2223超导相的形成，经历了先由2201相与CaO、CuO相互作用生成2212相，随后由2212相再与CaO及CuO作用产生2223相的过程．同时，论证了CaO面进入2212相元胞是形成2223相的控制步骤，用分步法及加入籽晶的工艺，制备了2223单相块材．更多还原

【Abstract】 Based on kinetic considerations, it is pointed out that 2201 phase can interact with CaO, CuO to form 2212 phase, subsequently, 2223 phase can be produced by interaction between 2212 and CaO, CuO. Meanwhile, it is proved by chemical kinetics that CaO plane entering unit cell of 2212 phase is the controlling step of 2223 phase formation.In addition, divided step method as well as seed additive techniqe have been adopted to Prepare the 2223-single phase bulk material.更多还原