| 由SiO2/3Y-TZP包裹复合粉体制备ZrSiO4/3Y-TZP细晶陶瓷 |
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| 引用本文： | 王士维,荣天君,黄校先,郭景坤.由SiO2/3Y-TZP包裹复合粉体制备ZrSiO4/3Y-TZP细晶陶瓷[J].无机材料学报,2002,17(2):283. |
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| 作者姓名： | 王士维 荣天君 黄校先 郭景坤 |
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| 作者单位： | 中国科学院上海硅酸盐研究所 上海 200050 |
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| 基金项目： | 教育部留学回国人员科研启动基金 |
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| 摘 要： | 对湿化学法制备的ＳｉＯ２／３Ｙ－ＴＺＰ包裹复合粉体进行了热压烧结研究，并利用Ｘ射线衍射和透射电镜表征了烧结体的物相和显微结构．在低于１３００℃，复合粉体发生瞬时粘性烧结，材料密度迅速提高；随着烧结温度的升高，ＳＩＯ２和ＺｒＯ２发生反应生成ＺｒＳｉＯ４．在１５００℃热压条件下，制备了平均晶粒尺寸为３５０ｎｍ的ＺｒＳｉＯ４／３Ｙ－ＴＺＰ细晶复相材料．我们认为，在烧结过程中形成的第二相ＺｒＳｉＯ４，特别是ＳｉＯ２包裹层对抑制基体晶粒长大起主要作用．
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| 关 键 词： | 包裹粉 热压 ZrSiO4/3Y-TZP |
| 收稿时间： | 2001-03-14 |
| 修稿时间： | 2001-05-07 |
Fine-grained ZrSiO4/3Y-TZP Ceramic Hot-pressed from 3Y-TZP Powders Coated with SiO2 Layer |
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| WANG Shi-Wei,RONG Tian-Jun,HUANG Xiao-Xian,GUO Jing-Kun.Fine-grained ZrSiO4/3Y-TZP Ceramic Hot-pressed from 3Y-TZP Powders Coated with SiO2 Layer[J].Journal of Inorganic Materials,2002,17(2):283. |
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| Authors: | WANG Shi-Wei RONG Tian-Jun HUANG Xiao-Xian GUO Jing-Kun |
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| Affiliation: | Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China） |
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| Abstract: | 3Y-TZP powder coated with SiO2 layer, prepared by the wet chemical method, was hot-pressed to fine-grained ZrSiO4/3Y-TZP composite. The phases and microstructure of the sintering bodies were characterized by X-ray diffraction and TEM. Below 1300℃, the coated powder was sintered to higher density by means of transient viscous sintering. With increasing temperature, SiO2 reacted with ZrO2 to form ZrSiO4. ZrSiO4/3Y-TZP ceramic with an average grain size of 350nm was obtained when the coated powder was hot-pressed at 1500℃ for 1h. It was suggested that SiO2 layer made greater contributions to the formation of the fine-grained ZrSiO4/3Y-TZP composite. |
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| Keywords: | ZrSiO4/3Y-TZP |
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