采用表面诱导沉淀法，制备了Al2 O3-Zr O2(15vol％)纳米复合粉料，利用透射电子显微镜对其形貌进行了表征．结果表明：在pH=5时，可以使 Zr O2前驱体均匀地包裹在Al2 O3颗粒表面，经过800℃煅烧之后，Al2 O3颗粒表面均匀地结合着粒径约为30nm的Zr O2颗粒，Zr O2颗粒尺寸均匀．该粉体经过24h球磨和超声波处理之后，未发生Zr O2颗粒脱落现象，表明 Zr O2颗粒与Al2 O3颗粒表面结合紧密．
Al2O3-ZrO2(15vol%) nanometer composite powder was prepared by surface-induced precipitation under the condition of pH=5. Zeta potential and TEM were applied for characterizing the specimen. The results show that the structure of the composite powder calcined at 800℃ is tightness and uniform and the average size of ZrO2 particles combined on the surface of Al2O 3particle is about 30nm.
参考文献
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