Abstract
A planar miniaturized SO2 sensor based upon a thick film of Ca2+ ion conductor-CaO·0.6MgO·6Al2O3 (CMA) with a Na2SO4 auxiliary electrode and a Pt/O2 reference electrode was fabricated and tested. The thick film was fabricated by screen-printing CMA ink on an alumina substrate and then fired at 1823 K. The solid electrolyte was interfaced with a sodium sulphate auxiliary phase containing Pt paste and the sensor showed a good SO2 response at 873–1073 K. The electromotive force (emf) values obtained were linearly dependent upon the logarithm values of SO2 concentration in a range of 10–500 ppm. Both the electrodes were exposed to the same test gas thus eliminating the need to separate the electrode chambers.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
