Grinding behavior of WO3, NiO, Fe2O3 by ultrasonic milling parameters control and preparation of nanocomposite powder
| Autor: | Keunhyuk Ryu, Kun-Jae Lee |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanocomposite General Chemical Engineering Composite number Alloy Metallurgy Sintering chemistry.chemical_element Nanoparticle 02 engineering and technology Tungsten engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Grinding chemistry Mechanics of Materials engineering Particle size 0210 nano-technology |
| Zdroj: | Advanced Powder Technology. 31:3867-3873 |
| ISSN: | 0921-8831 |
| Popis: | Tungsten-based alloys have been widely applied in various industries due to their excellent mechanical properties. Tungsten-based alloys have a high sintering temperature due to the high melting point of tungsten, so the coarse particles negatively affect the mechanical properties of the alloy. This problem can be solved by increasing the densification by reducing the sintering temperature and time by adding nanoparticles with high surface energy. Herein, we fabricated nanoparticle-sized metal oxides by ultrasonic milling to minimize the influx of impurities to improve the densification of tungsten alloys. The main parameters of the ultrasonic milling experiments were ball density and ball layer. Metal oxides prepared by ultrasonic milling showed an average particle size distribution of less than 200 nm, and metal composite powders prepared through subsequent hydrogen reduction also showed nanoparticle size distributions. We believe that this approach will enable the production of improved sintered tungsten-based alloys. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect