Publication details
Atmospheric pressure air plasma treated alumina powder for ceramic sintering
| Authors | |
|---|---|
| Year of publication | 2014 |
| Type | Article in Periodical |
| Magazine / Source | Ceramics International |
| MU Faculty or unit | |
| Citation | |
| Web | http://www.sciencedirect.com/science/article/pii/S0272884214006762 |
| Doi | http://dx.doi.org/10.1016/j.ceramint.2014.04.124 |
| Field | Plasma physics |
| Keywords | Grain size; Al2O3; Colloidal stability; Plasma treatment |
| Description | Sub-micron alumina powder was treated by the Diffuse Coplanar Surface Barrier Discharge (DCSBD) in ambient air. Although plasma treatment did not affect the isoelectric point, the results indicated an enhanced colloidal stability of treated powder, especially when ultrasonication was used as homogenization method. Suspensions prepared from plasma treated powder exhibited lower pH values compared to those of original powder. FTIR analysis confirmed enhanced sorption ability of treated powder. Polycrystalline alumina ceramics prepared from the treated powder possess significantly finer microstructure compared to those prepared from untreated powders. These findings may have a significant impact on ceramic engineering. |
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