| Abstract: |
The radio frequency inductively coupled thermal plasma (RF-ICTP) deposition process, based on the use of solution or suspension precursors as the process feedstock, has been employed for the production of SOFC electrolytes. A dynamic mask system has been developed to increase the quality of the sprayed films, as well as to diminish the heating effects of a high-temperature deposition process. The mask system includes a heat diffusion unit and a removable ring with a gas diffuser which can be exchanged according to the needs. Parameters like gas diffuser diameter, nozzle diameter, number of nozzles, quench gas flow rate, and the mask position were taken into consideration. The experimental results of the nano-structured SOFC electrolytes production by means of a RF-ICTP process using the newly proposed and without mask were compared. The results indicate that using a mask is beneficial for the improvement of the electrolyte film thickness uniformity and coating porosity diminishing.
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