| 化学法制备纳米氧化物及其EXAFS特征 |
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| 引用本文： | 邓红梅,马礼敦.化学法制备纳米氧化物及其EXAFS特征[J].复旦学报(自然科学版),1994,33(2):227-231. |
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| 作者姓名： | 邓红梅 马礼敦 |
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| 作者单位： | 复旦大学分析测试中心 |
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| 基金项目： | 复旦大学自然科学青年基金 |
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| 摘 要： | 利用化学方法合成了纳米Ｙ２Ｏ３和纳米ＺｒＯ２颗粒（晶粒的平均大小为２５ｎｍ和１４ｎｍ），并制得了相应氧化物的纳米压结块。探讨了纳米氧化物颗粒被压结成型的各种影响因素。对不同成型压力及不同尺寸纳米氧化物的ＥＸＡＦＳ（扩展Ｘ射线吸收精细结构）谱特征进行了，工与纳米金属的ＥＸＡＦＳ谱特征进行了比较。结果表明，纳米氧化物块体中，晶界原子主要由氧原子组成。
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| 关 键 词： | 纳米材料 氧化钇 氧化锆 EXAFS谱 |
Chemical synthesis and EXAFS characterization of nanophase oxides |
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| Deng Hongmei, Ma Lidun, Shi Guoshun, Shen Xiaoliang.Chemical synthesis and EXAFS characterization of nanophase oxides[J].Journal of Fudan University(Natural Science),1994,33(2):227-231. |
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| Authors: | Deng Hongmei Ma Lidun Shi Guoshun Shen Xiaoliang |
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| Institution: | Center for Analysis and Measurement |
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| Abstract: | Nanometer-sized clusters of yttrium oxide and zirconium oxide, with a Incan crystal size of 25 urn and 14 urn respectively, were prepaid by a chemical method in solution. Then the corresponding nanophase compacts were obtained in atmosphere.The EXAFS characterhation of nanophase oxides with different compacting pressure were discussed and compared with that of nanophase metal materials. The results show that, in nanophase oxide, the composition of crystal boundaries is mostly consistS of oxygen atoms. |
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| Keywords: | nanophase materials yttrium oxide zirconium oxide extended X-ray absorption fine structure(EXAFS) |
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