液相沉淀法制备ZTA纳米复相陶瓷

复合材料学报, 2006, 23(3): 108-113. doi: 10.3321/j.issn:1000-3851.2006.03.021

液相沉淀法制备ZTA纳米复相陶瓷

于庆华 ^1, , 王介强 ^2, , 郑少华 ^3, , 高新睿 ^4, , 王勇 ^5,

1.济南大学,材料科学与工程学院,济南,250022;山东城市建设职业学院,建筑工程系,济南,250014

2.济南大学,材料科学与工程学院,济南,250022

3.济南大学,材料科学与工程学院,济南,250022

4.济南大学,材料科学与工程学院,济南,250022

5.济南大学,材料科学与工程学院,济南,250022

基金项目: 山东省优秀中青年科学家科研奖励基金(02BSO49)

关键词： ZTA , 纳米粉体 , 液相沉淀

Preparation of ZTA nanoceramic composites by liquid-phase precipitation method

以NH4Al(SO4)2·12H2O,ZrOCl2·8H2O,Y(NO3)3为母盐,用NH4HCO3作沉淀剂,控制滴定速度小于5 mL/min,采用液相沉淀法制备了纳米3Y-ZrO2/Al2O3前驱体.分析了添加籽晶和煅烧温度对粉体性能的影响.在1000℃煅烧得到了分散性良好,平均粒径为10 nm,两相分布均匀的纳米复合粉体,XRD分析显示前驱体在煅烧过程中无中间相γ-Al2O3和θ-Al2O3生成,粉体具有较高的烧结活性,在1550℃烧结3 h后烧结体致密度达到98.6%,断裂韧性可达7.68 MPa·m1/2

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液相沉淀法制备ZTA纳米复相陶瓷

Preparation of ZTA nanoceramic composites by liquid-phase precipitation method

参考文献