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Solid-state sensor for measuring antimony in non-ferrous metals

Solid State Ionics
Publication Date
DOI: 10.1016/0167-2738(96)00276-7
  • Xi. Sensors


Abstract Solid-state sensor for measuring antimony in molten non-ferrous metals is developed employing Na- β- Al 2 O 3 + NaSbO 3 composite solid electrolyte. The solid-state antimony sensor is schematically represented as M, Na ref // Na- β- Al 2 O 3 + NaSbO 3 // Sb melt, M. The antimony sensor has been tested in SnSb melt at 733 K, ZnSb melt at 793 K and CuSb melt at 1423 and 1473 K. The measurements were conducted in dilute alloys containing less than 1 wt% Sb. The antimony content of the alloy samples was analysed by AAS. The measured e.m.f. of antimony sensor was found to be Nernstian with a slope of − RT 3F when plotted against ln X sb.

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