[en] Full text: The development of inexpensive methods to obtain porous and thin ceramic films can reduce the cost of several technological products, including energy generation devices such as solid oxide fuel cells (SOFC). Strontium doped lanthanum manganite (LSM) is the most commonly used material as cathode of the SOFC and for this application the LSM must deposited over an electrolyte or an interconnector as a thin and porous film [1,2]. In this study we intended to obtain porous and thin LSM films over heated yttria stabilized zirconia (YSZ) substrates using a metal salts solution and an airbrush. The deposition of the films was carried out with temperatures of the substrates of 500°C (sample A) and 650°C (sample B). After the deposition the films were calcined at 850°C for 1 hour and the phase formation and microstructure were evaluated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. In the XDR patterns of both samples a well crystallized LSM perovskite phase was identified. The remaining peaks were attributed to the YSZ substrate. The SEM micrographs revealed a porous microstructure in the both cases with pores of different sizes, but mostly with submicrometric pores. In sample B the LSM film seem to have a wider range of pore size distribution than in sample A. Also, in sample B, the film is more continuous with very low amount of cracks and oversized pores. The temperature of the substrate is an important parameter in airbrushed ceramic films, if adjusted well can be used to introduce microstructural modification, especially in respect of pore size and distribution. References: [1] EG&G Technical Services; Science and Applications International Corporation. Fuel Cell Handbook. USA, U.S. Department of Energy, ed.6, 2002. [2] HOOGERS, G. (Editor). Fuel Cell Handbook, E.U.A., CRC Press LLC, ed.2, 2003. (author)