MECHANICAL PROPERTIES OF LANTHANUM SILICATE OXYAPATITE (LSO) CERAMICS

R. MOREIRA TOJA; T. UCHIKOSHI; Y. SAKKA; N. RENDTORFF; G. SUAREZ; E. AGLIETTI

Foz de Iguazu

Congreso; 7th International Congress on Ceramics (ICC7), in conjunction with the 62nd Brazilian Congress on Ceramics.; 2018

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Solid oxide fuel cells (SOFC) are a type of fuel cells that use a solid oxide (i.e. an oxide ceramic) as the electrolyte connecting both electrodes. The most widely used ceramic electrolyte nowadays is yttria-stabilized zirconia, with a high oxide ion conductivity at temperatures between 800~1000 °C . There is a trend to switch to lower operation temperatures, in order to reduce operational costs and increase the lifetime of the components. Lanthanum silicate oxyapatite (LSO), with an apatite-like structure and formula La9.33+x(SiO4)6O2+3x/2 (where 0