Materials Reports  2021, Vol. 35 Issue (z2): 428-432 |
| METALS AND METAL MATRIX COMPOSITES |
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| Study on the Process of Preparing Micron Silver Flakes by High Energy Ball Mill |
| TANG Weigang1, HU Ling1, HUANG Shisheng1, CHEN Rong1, GUO Bing2, SHEN Hangyan2
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1 Hangzhou Huaguang Advanced Welding Materials Co., Ltd, Hangzhou 311112, China
2 College of Materials and Chemistry, China Jiliang University, Hangzhou 310018, China |
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Abstract Micron-sized flake silver powders were successfully prepared by high-energy ball milling method using 1 μm silver particles as raw material. The effects of ball milling parameters on the morphology and particle size of silver powders were investigated. The results show that the longer the ball milling time is used, the better the flake-forming property and the larger the particle size of the silver powder are obtained. The ball milling efficiency and the flake-forming property of the silver powders are also affected by the ball milling speed, the ball-to-material ratio and the concentration of the ball milling medium. When the ball-to-material ratio is 10∶1, the ball milling speed is 250 r·min-1, the ball milling time is 24 h, and the amount of anhydrous ethanol is 3 mL, the silver powders prepared by ball milling have less agglomeration and better flake-forming property. The particle size of the silver powder is 2—6 μm.
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Published: 09 December 2021
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| Fund:This work was financially supported by the Science and Technology Project of Zhejiang Province, China (2018C01123). |
About author:: Weigang Tang has been working in Hangzhou Huaguang Advanced Welding Materials Co., Ltd for nearly 20 years. He has participated in the design and development of a number of major equipments and made important contributions to the improvement of brazing metal industrialization level. As the executive director of research institute, he carried out the development of a series of new brazing metal products and braing metal equipments with team. As the main inventor of a number of inventions and utility model patents of the company, he has been awarded the Grand Prize of the China Machinery Industry Science and Technology Award in 2020.
Hangyan Shen received her Ph.D. degree in metallurgy engineering from Tohoku University in Sep. 2005. She serves in College of Materials and Chemistry of China Jiliang University since 2006 and is currently a professor of the China Jiliang University. She went to Melborne University as a senior visiting scholars in 2002 in Melborne University. She has published more than 50 journal papers, applied 20 national invention patents and 10 of them were authorized. Her research interests are metal welding materials, electronic packaging materials and nano-materials and so on。 |
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