Abstract
As a preceding process for preparing several micrometer sized Ag-coated Cu flakes, ball milling of submicrometer-sized Cu particles synthesized through a wet chemical method was performed in order to convert the particles into flakes. To suppress oxidation and aggregation of the particles during ball milling, ethylene glycol and ethyl acetate were used as a medium and a surface modifying agent, respectively. Results obtained with different rotation speeds of a jar indicated that the rotation speed changes a rotating mode, and strikingly alters the final shapes and shape uniformity of Cu particles after milling. The diameter of zirconia ball was also confirmed. Although there was aggregates in the initial submicrometer-sized Cu particles, therefore, well-dispersed Cu flakes with a size of several micrometers were successfully prepared by ball milling through optimization of rotation speed, amount of ethyl acetate, and diameter of zirconia ball.
| Translated title of the contribution | Fabrication of Cu Flakes by Ball Milling of Sub-micrometer Spherical Cu Particles |
|---|---|
| Original language | Korean |
| Pages (from-to) | 133-137 |
| Number of pages | 5 |
| Journal | 마이크로전자 및 패키징학회지 |
| Volume | 21 |
| Issue number | 4 |
| DOIs | |
| State | Published - Dec 2014 |