Desenvolvimento e avaliação de um porta-amostra de baixo custo para caracterização elétrica de materiais cerâmicos

Química Nova

Luiz Rogério Pinho De Andrade Lima²  Shayenne Diniz Da Nóbrega²  Carmel Suzarte Ayres Vasconcelos²  Iuri Muniz Pepe¹  Luiz Carlos Simões Soares Júnior¹ 

[1] ,Universidade Federal da Bahia Escola Politécnica Departmento de Ciência e Tecnologia dos MateriaisSalvador BA ,Brasil

关键词: sample holder;    solid oxide fuel cell;    impedance spectroscopy;   

DOI  :  10.1590/S0100-40422010000500033

来源: SciELO

【 摘 要 】

Conventional sample holder cells used to the electric characterization of ceramics at high temperature consists of an alumina tube and platinum wires and plates using a complex design. The high cost materials used in the conventional sampler holder cell were replaced by stainless steel and conventional ceramics. The sample holder was validated by characterizing yttria-stabilized-zirconia in a temperature range of 25 to 700 ºC. The results do not present variations, discontinuity or unusual noise in the electric signals. Several samples were characterized without maintenance, which demonstrates that the sample holder is electric and mechanic adequate to be used to electrical characterization of ceramics up to 700 ºC.

【 授权许可】

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