Measurement and Characterization of the Particle Size of Refractory Corundum
| Autor: | Bing Jun Wang, Kai Qi Liu, Xiao Hu Xie, Fen Rong Yang |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Mineralogy Corundum engineering.material Symmetry (physics) Characterization (materials science) Normal distribution Mechanics of Materials Particle-size distribution engineering Particle General Materials Science Particle size Composite material |
| Zdroj: | Key Engineering Materials. 544:135-138 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.544.135 |
| Popis: | With introducing briefly the refractory powder materials, the article analyzed the morphology and particle size distribution of commercial different size fraction corundum powder by scanning electron microscopy and laser particle size analyzer. The results showed that most of corundum powder particles were angular spherical, Their particle volume average diameters D(4,3) are greater than median grain sizes D50, and with the difference increasing the distribution curve symmetry becomes worse. Moreover, size frequency distribution curve presents slanting unimodal or bimodal pattern, not completely normal distribution. Besides those, particle size ranges are very wide, e.g. the D90 of 15 μ m is 30 times larger than D10. Therefore, using only the average particle diameter indicates the powder is not comprehensive. The parameters and the size distribution cure measured by laser particle size analyzer can be detailed and accurate to reflect actual powder particle size and distribution, so using them as the commercial corundum powder specification values will be important to enhance the effective utilization of the powder. |
| Databáze: | OpenAIRE |
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