| 摘要 |
PURPOSE:To measure the composition of an electrolyte plate within a short time, by a method wherein lithium aluminate being the electrolyte holding material of a fuel battery, and lithium carbonate and potassium carbonate being electrolytes are melted under heating to be formed into a glass bead which is, in turn, subjected to fluorescent X-ray analysis. CONSTITUTION:The electrolyte plate of a molten carbonate type fuel cell is constituted of lithium aluminate being an electrolyte holding material, and lithium carbonate and potassium carbonate being electrolytes. Said electrolyte plate is heated and melted along with a flux agent at 650-1,000 deg.C to prepare a glass bead specimen. As the flux agent, a composition comprising a mixture consisting of anhydrous lithium borate being a main component, lithium carbonate and sodium iodide and having a compositional wt. ratio of 5:1:0.02-10:1:0.02 is used. The bead specimen is subjected to fluorescent X-ray analysis and lithium aluminate is quantified from AlKalpha fluorescent X-ray intensity while potassium carbonate is quantified from KKalpha fluorescent X-ray intensity and both values are subtracted from the whole to calculate lithium carbonate. Because the bead specimen is prepared and subjected to fluorescent X-ray analysis, the composition can be analyzed within a short time with high accuracy. |
