In this study, La 10 (SiO 4 ) 6 O 3 coatings deposited on aluminum substrates by atmospheric plasma spraying were investigated for potential for use as electrolyte layers in solid oxide fuel cells. By proper selection of spraying parameters, particularly the hydrogen gas flow rate, the La 10 (SiO 4 ) 6 O 3 ceramic layers showed good densification. The results suggest that atmospheric plasma spraying may be an appropriate method for the production of SOFCs.

Lanthanum silicate coatings were deposited onto stainless steel substrates by atmospheric plasma spraying (APS) using mechanically mixed (type A) and calcined feedstock (type B) powders. The phase composition, microstructure, density and porosity of coatings prepared from the two types of powder were compared.

The emergence of lanthanum silicate as an electrolyte is required to accelerate the development of synthesis techniques for intermediate temperature solid oxide fuel cells (ITSOFCs). Apatite-type oxide powders of La 10 (SiO 4 ) 6 O 3 have been elaborated through atmospheric plasma spraying (APS) using micro-scale mixtures of La 2 O 3 and SiO 2 powders. Granulometer and scanning electron microscopy analyses have indicated the result of high temperature reaction and rapid solidification in the evolution of multi-scale microstructure.