| 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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