| 化学镀法制备核壳型银-铜双金属粉 |
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| 引用本文： | 徐锐,周康根,胡敏艺.化学镀法制备核壳型银-铜双金属粉[J].材料科学与工艺,2009,17(3):333-335. |
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| 作者姓名： | 徐锐 周康根 胡敏艺 |
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| 作者单位： | 徐锐,XU Rui(中南大学,冶金科学与工程学院,长沙,410083;河南科技大学,化工与制药学院,洛阳,471003);周康根,胡敏艺,ZHOU Kang-gen,HU Min-yi(中南大学,冶金科学与工程学院,长沙,410083) |
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| 摘 要： | 为改善超细铜粉的高温抗氧化性能,通过热力学数据理论上分析了液相还原反应取代置换反应的可行性,并以水合肼作还原剂,银以稳定性适中的银氨络合物存在,采用化学镀法制备银包覆超细铜粉的新技术,利用SEM、XRD等手段对双金属粉的形貌和晶相组成进行了分析.研究表明,一次包覆铜粉基体表面银的包覆率为40.22%,二次包覆银的包覆率可达94.98%,在铜粉表面形成了连续的银膜,可以认为是表面包覆结构,拓展了超细铜粉的应用领域.
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| 关 键 词： | 核壳型 双金属粉 化学镀 制备 |
Preparation of core-shell Cu-Ag bimetallic powders via electroless plating |
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| XU Rui ,ZHOU Kang-gen,HU Min-yi.Preparation of core-shell Cu-Ag bimetallic powders via electroless plating[J].Materials Science and Technology,2009,17(3):333-335. |
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| Authors: | XU Rui ZHOU Kang-gen HU Min-yi |
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| Affiliation: | XU Rui1 2,ZHOU Kang-gen1,HU Min-yi1 (1.College of Metallurgy Science , Engineering,Central South University,Changsha 410083,China,2.College of Chemical , Pharmaceutical Engineering,Henan University of Science , Technology,Luoyang 471003,China) |
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| Abstract: | To improve the anti-oxidation of ultrafine copper powders at high temperature,the feasibility of reduction reaction replacing the conventional substitution reaction was analyzed in theory by thermodynamics datum,then silver-coated ultrafine copper powders were prepared by electroless plating of silver on copper powders using hydrazine as reducing agent in the reduction reaction,and the silver existed in the manner of Ag(NH3)2].The morphology and crystal composition of bimetallic powders were characterized ... |
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| Keywords: | core-shell bimetallic powders electroless plating preparation |
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