| 液相沉淀法制备ZTA纳米复相陶瓷 |
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| 引用本文： | 于庆华,王介强,郑少华,高新睿,王勇. 液相沉淀法制备ZTA纳米复相陶瓷[J]. 复合材料学报, 2006, 23(3): 108-113 |
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| 作者姓名： | 于庆华 王介强 郑少华 高新睿 王勇 |
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| 作者单位： | 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;济南大学,材料科学与工程学院,济南,250022 |
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| 基金项目： | 山东省优秀中青年科学家科研奖励基金 |
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| 摘 要： | 以NH4Al(SO4 )2·12H2O , ZrOCl2·8H2O , Y(NO3 ) 3为母盐, 用NH4 HCO3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3 Y-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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| 关 键 词： | ZTA 纳米粉体 液相沉淀 |
| 文章编号： | 1000-3851（2006）03-0108-06 |
| 收稿时间： | 2005-07-11 |
| 修稿时间： | 2005-07-112005-11-21 |
Preparation of ZTA nanoceramic composites by l iquid-phase precipitation method |
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| YU Qinghua,WANG Jieqiang,ZHENG Shaohua,GAO Xinrui,WANG Yong. Preparation of ZTA nanoceramic composites by l iquid-phase precipitation method[J]. Acta Materiae Compositae Sinica, 2006, 23(3): 108-113 |
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| Authors: | YU Qinghua WANG Jieqiang ZHENG Shaohua GAO Xinrui WANG Yong |
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| Affiliation: | 1.School of Materials Science and Engineering| Jinan University| Jinan 250022| China |2.Department ofCivil Engineering and Architecture| Shandong Urban Const ruction Vocational College| J inan 250014| China |
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| Abstract: | Using the pure NH4Al(SO4 )2·12H2O , ZrOCl2 ·8H2O and Y(NO3 ) 3 as the starting materials , and theN H4 HCO3 solution as precipitant , the ult rafine 3 Y-ZrO2 / Al2O3 precursor was prepared by the liquid-phase precipitation method. The effect s of seeds and the calcination temperature on the properties of the powder were studied.The well-dispersible ZrO2 / Al2O3 composite nanopowder with particles of 10 nm was obtained by calcining the precursor at 1000 ℃. The XRD patterns show noγ-Al2O3 andθ-Al2O3 form during calcination. The relative density andfracture toughness of specimen reach 98. 6 % and 7. 68 MPa·m1/2 , respectively af ter sintering the green compact s at1550 ℃for 3 h. |
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| Keywords: | ZTA |
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