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本文通过对Ｍｅｎ＋（Ｚｎ２＋；Ｃｒ３＋，Ｍｎ２＋；Ｓｂ３＋，Ｂｉ３＋，Ｃｏ２＋）－ＮＨ３－ＣＯ３２－－Ｈ２Ｏ体系进行热力学分析的基础上，获得了Ｍｅ－ＮＨ３－ＣＯ３２－Ｈ２Ｏ体系中的ｌｇ［Ｍ］－ｐＨ关系图，得到了用ＮＨ４ＨＣＯ３和ＮＨ３·Ｈ２Ｏ作沉淀剂，用共沉淀法制备掺杂氧化锌压敏陶瓷粉料时，最佳共沉淀ｐＨ为７．０左右．
In this paper, based on the thermodynamic analysis of Men + (Zn2 +; Cr3 +, Mn2 +; Sb3 +, Bi3 +, Co2 +) - NH3-CO32 - H2O system, we obtained lg [M] -pH The results showed that the optimum coprecipitation pH was about 7.0 when using NH4HCO3 and NH3 · H2O as precipitants and coprecipitation method to prepare doped ZnO varistor ceramic powder.