化学镀法合成纳米Ag包覆Al2O3复合粉
Synthesis of Ag-Cladding Al2O3 Powder by Chemical Deposition
查看参考文献14篇
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文摘
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以平均直径约为200nm的Al2O3粉为原料,以氨基溶液为镀液,硝酸银为初始材料,在反应过程中,控制最佳的还原剂浓度、反应时间等参量,使Al2O3表面获得均匀的金属Ag涂层.以HRTEM,XRD,EDS等手段研究了化学镀银所获得的Ag-Al2O3复合粉的结构.结果表明,所有的Ag-Al2O3复合粉具有壳-核结构,壳层由纳米非晶银和纳米银晶体颗粒构成,尺度分别是5nm和10nm. |
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其他语种文摘
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The raw Al2O3 particles are 200 nm in average diameter. Chemical deposition of Ag was carried out taking ammonia-based solution as bath in which the silver nitrate is primary component. In the reaction process such parameters as the concentration of reducing agent, reaction time and others were optimized in order to clad uniformly all of Al2O3 particles. The result showed that all Ag-AfeOi composite particles are of core-shell structure, of which the shell is composed of amorphous Ag and crystal Ag particles and their sizes are 5 nm and 10 nm respectively. The microstructures of Ag-cladding Al2O3 powder synthesized via silver chemical process was investigated by XRD, TEM and EDS techniques. |
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来源
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东北大学学报. 自然科学版
,2004,25(8):768-770 【核心库】
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关键词
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化学镀
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纳米包覆
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浸渍处理
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Ag-Al2O3复合粉
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核-壳结构
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地址
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1.
东北大学,材料与冶金学院, 辽宁, 沈阳, 110004
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中国科学院金属研究所, 辽宁, 沈阳, 110016
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公州大学, 韩国, 公州
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-3026 |
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学科
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一般工业技术 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:1678693
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