Abstract
In this study, the influence of oxygen concentration on the mechanical properties of sintered bodies produced from commercial and low-oxygen molybdenum powder via pulsed-current-activated sintering was determined. The hardness of the sintered bodies increased with the sintering temperature up to 1,500 °C and then decreased with further temperature increase. The hardness of the sintered low-oxygen-molybdenum body was slightly higher than the rest of the sintered bodies. This was because the relative density of the sintered low-oxygen-molybdenum body increased more than that of others as the sintering temperature increased. Furthermore, the grain size of the sintered commercial-molybdenum body was larger than that of the sintered low-oxygen-molybdenum body. This was attributed to the positive effect of molybdenum oxide on grain growth during sintering. Thus, it was established that low-oxygen molybdenum powder can suppress grain growth during sintering, resulting in improved mechanical properties of the sintered bodies.
| Original language | English |
|---|---|
| Pages (from-to) | 9029-9032 |
| Number of pages | 4 |
| Journal | Journal of nanoscience and nanotechnology |
| Volume | 14 |
| Issue number | 12 |
| DOIs | |
| State | Published - 2014.12.1 |
Keywords
- Grain boundary
- Molybdenum
- Oxygen
- PCAS
Quacquarelli Symonds(QS) Subject Topics
- Materials Science
- Engineering - Chemical
- Chemistry
- Physics & Astronomy
- Biological Sciences
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