【摘要】 以碳酸钙、氧氯化锆、氧化铟为原料，用ｐＨ＝８．５～９．５的草酸－氨水溶液作沉淀剂，并加入适量的表面活性剂，制得了成分准确、颗粒均匀、分散性好的ＣａＺｒ_１－ｘＩｎ_ｘＯ_３－α的前驱物。该沉淀物经１０００℃，３ｈ煅烧即可生成ＣａＺｒ_１－ｘＩｎ_ｘＯ_３－α相；此产物经１６００℃，８ｈ时烧结，得到相对密度大于９５％的致密烧结体。测量了烧结体在湿空气中的阻抗谱并提出了合理的等效电路，得到ＣａＺｒ_１－ｘＩｎ_ｘＯ_３－α的本体电导率与温度和组成的关系。更多还原

【Abstract】 The CaZr_1-xIn_xO_3-αprecursors were synthesized by coprecipitation method using oxalate acid solution reacting with hydrochloric acid solution of CaCO₃,ZrOCL₂·8H₂O and In₂O₃.The pH value of the solutions is about 8.5～9.5.The influence of high polymer additives is discussed.The dried coprecipitation powder was calcined at 1000 ℃ for 3h and then the pressed pellets were sintered in air at 1600℃ for 8h.The sintered pellets are pure CaZr_1-xIn_xO_3-α and their relative density is greater than 95%.The impedance spectroscopy（IS） of CaZr_1-xIn_xO_3-αwas measured in wet air using coated porous platinum electrodes.A reasonable equivalent circuit of measured IS is proposed and the bulk conductivities of CaZr_1-xIn_xO_3-αare obtained for x=0.03,0.07,0.09 and 0.10.The relationship between conductivity and the doped contents of In₂O₃ is discussed also.更多还原