Influence of Process Control Agents on Mechanochemical Synthesis of NiAl∕Al[sub 2]O[sub 3] Nano Composite powder
| Autor: | S. Heshmati-Manesh, A. Jabbarnia, Mohamad Rusop, Rihanum Yahaya Subban, Norlida Kamarulzaman, Wong Tin Wui |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Exothermic reaction
Nial Materials science Scanning electron microscope Nickel oxide digestive oral and skin physiology Metallurgy Non-blocking I/O Composite number technology industry and agriculture Intermetallic food and beverages complex mixtures Chemical engineering Ball mill computer computer.programming_language |
| Zdroj: | AIP Conference Proceedings. |
| ISSN: | 0094-243X |
| DOI: | 10.1063/1.3377855 |
| Popis: | Mechanochemical synthesis of an intermetallic NiAl matrix nano composite powder has been studied in this paper. Micron sized powders of nickel oxide (NiO) and aluminum powders were subjected to high energy ball milling under an argon protected atmosphere. According to an exothermic exchange reaction assisted by high energy ball milling, nickel oxide is reduced by Al and a NiAl/Al2O3 composite powder is produced. The process was also examined when stearic acid and methanol were added as process control agents (PCAs) to the reactants and it was found that their addition hinders the reduction reaction. The effect of further milling on the milling behavior of the resulting composite powder has also been investigated. The morphology and phase composition of the milling products were evaluated by scanning electron microscopy (SEM) and X‐ray diffraction (XRD) analysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|