- Fabrication of Micro Component of Metallic Nano Powder Using Polymer Mold
-
Woo-Seok Lee, Sang-Phil Kim, Hye-Moon Lee, Dong-Sik Bae, Chul-Jin Choi
-
J Korean Powder Metall Inst. 2007;14(3):202-207.
-
DOI: https://doi.org/10.4150/KPMI.2007.14.3.202
-
-
 Abstract
 PDF
- Novel polymer mold process for fabrication of microcomponents using metal nanopowders was developed and experimentally optimized. Polymer mold for forming green components was produced by using a hard master mold and polydimethylsiloxane (PDMS). In the preparation of metallic powder premix for the green components without any defect, 90 wt.% 17-4PH statinless steel nanopowders and 10 wt.% organic binder were mixed by a ball milling process. The green components with very clear gear shape were formed by filling the powder premix into the PDMS soft mold in surrounding at about 100°C. Cold isostatic pressing (CIP) was very potent process to decrease a porosity in the sintered microcomponent. The microgear fabricated by the improved process showed a good dimension tolerance of about 1.2%.
|
kpmi
