Effect of Copper Powder Particle Size on 3D Printing Forming and Sintering Forming Properties
Author of the article:ZHOU Jian;TANG Danna;HAO Liang
Author's Workplace：Gemological Institute, China University of Geosciences,Wuhan 430074,China
Key Words：3D printing paste injection metal sintering particle size
Abstract：
The effects of Cu powder with different particle sizes on the properties of printing and sintering were studied.The effects of different particle sizes were evaluated from three aspects, slurry stability, sintering effect and forming quality.The microstructure and element content of sintered samples were analyzed by EDS and SEM. The process of sample sintering was analyzed by thermogravimetric analyzer. The results show that 20 μm copper powder is more likely to agglomerate under the influence of internal Van der Waals force, resulting in slurry accumulation affecting the printing process. 1 μm powder is densest and has the lowest overall shrinkage after sintering, the forming effect is better.
