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| Titel: |
Sintering of Polydisperse Nanometer-Sized Agglomerates |
| Auteur: |
Seto, Takafumi Hirota, Atsushi Fujimoto, Toshiyuki Shimada, Manabu Okuyama, Kikuo |
| Verschenen in: |
Aerosol science and technology |
| Paginering: | Jaargang 27 (1997) nr. 3 pagina's 422-438 |
| Jaar: |
1997-09-01 |
| Inhoud: |
In order to evaluate the sintering characteristics of polydisperse TiO2 and SiO2 fractal agglomerates consisting of nm-sized primary particles (nanoparticles), the change in size distribution of agglomerates in a heated pipe is measured using a differential mobility analyzer and a condensation nucleus counter. Change in the structure and the primary particle size of the agglomerates collected by a thermophoretic aerosol sampler is also measured by the transmission electron microscopy as a function of furnace temperature. Coalescence of the agglomerates and the growth of primary particles due to sintering are observed at temperatures corresponding to 50%-100% of the bulk melting points of the particle material. To model the changes in the size distribution of agglomerates and primary particles due to sintering, two-dimensional sectional representation of the size distribution is employed, and the population balance equation for sintering is solved numerically. The calculated results, considering a well-defined temperature history of the agglomerates, successfully explain the observed changes in the particle-size distribution and agglomerate structure. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 8 van 12 gevonden artikelen
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