采用液相共沉淀法用草酸作为沉淀剂制备了Co-Mn-Ni-O陶瓷热敏电阻纳米粉体,并采用综合热分析(TG、DTA)、X射线衍射(XRD)和扫描电子显微技术(SEM)对该法制备的粉体和对照粉体进行了综合表征,结果显示用该方法可以制备晶粒平均粒径在9nm左右、粉体颗粒形貌呈球形、颗粒粒径在50～100nm范围内、粒度分布范围较窄的Co-Mn-Ni-O三元系NTC热敏纳米粉体粉体,能够满足Co-Mn-Ni-O陶瓷热敏电阻对粉体的要求.
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