| 采用硫酸作为稳定剂制备微米级球形银粉 |
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| 引用本文： | 蔡雄辉,吴懿平,安兵,吴丰顺.采用硫酸作为稳定剂制备微米级球形银粉[J].粉末冶金技术,2009,27(5). |
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| 作者姓名： | 蔡雄辉 吴懿平 安兵 吴丰顺 |
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| 作者单位： | 1. 华中科技大学材料科学与工程学院,武汉,430074
2. 华中科技大学材料科学与工程学院,武汉,430074;武汉国家光电实验室,武汉,430074 |
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| 基金项目： | 国家高新技术研究与发展计划项目，国家自然科学基金资助项目 |
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| 摘 要： | 采用抗坏血酸作为还原剂,硫酸作为稳定剂,在高速搅拌、室温的条件下还原硝酸银溶液制备微米级球形银粉.考查了硫酸用量、反应温度和添加高分子保护剂对银粉的微观形貌的影响.通过SEM、EDX和XRD对制备的银粉进行了表征分析,结果表明:制备的超细银粉为类球形,粒径较为均一,粒径范围为1~2.0μm可调;减小或增大硫酸用量都将导致银粉粒径变小;升高温度或者添加适量的N-甲基吡咯烷酮也可减小粒子粒径.
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| 关 键 词： | 银粉 湿化学 硫酸 抗坏血酸 微米 |
Preparation of uniform and ball shape Ag powders using sulfuric acid as the stabilizer |
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| Cai Xionghui,Wu Yiping,An Bing,Wu Fengshun.Preparation of uniform and ball shape Ag powders using sulfuric acid as the stabilizer[J].Powder Metallurgy Technology,2009,27(5). |
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| Authors: | Cai Xionghui Wu Yiping An Bing Wu Fengshun |
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| Affiliation: | Cai Xionghui1),Wu Yiping1),2),An Bing1),Wu Fengshun1)1)(College of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)2)(Wuhan National Laboratory for Optoelectronics,China) |
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| Abstract: | In this article, a novel preparation way for uniform and ball shape Ag powders was presented. The well-defined particles were prepared by mixing the ascorbic acid solution and silver nitrate solution containing appropriate diluted sulfuric acid with high-speed stirring at 10 - 13℃. The diameters of silver particles are 1-2. 0μm. It is also found that the quantity of sulfuric acid added has effect on the particle size. The more is it, the smaller is the size. And the size can also be adjusted by introducing the organic stabilizers (N-Methyl pyrrolidone) or changing the reaction temperature. Scanning electron microscopy, X-ray diffraction, and energy dispersive X-ray analysis were used to characterize the resulting product. |
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| Keywords: | silver powder wet-chemical synthesis sulfuric acid ascorbic acid micro meter |
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