Sensing of sulfur in molten metal using strontium β-alumina

A sulfur sensor based upon strontium beta-alumina solid electrolyte was developed and tested in molten iron. The strontium beta-alumina electrolyte was fabricated using an injection molding process and optimized for thermal shock resistance and toughness by incorporating up to 20 wt pct partially st...

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Bibliographic Details
Published in:Metallurgical and materials transactions. B, Process metallurgy and materials processing science Process metallurgy and materials processing science, 2006-06, Vol.37 (3), p.381-388
Main Authors: SWETNAM, M. A, KUMAR, R. V, FRAY, D. J
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Metals. Metallurgy
Production of metals
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Summary:A sulfur sensor based upon strontium beta-alumina solid electrolyte was developed and tested in molten iron. The strontium beta-alumina electrolyte was fabricated using an injection molding process and optimized for thermal shock resistance and toughness by incorporating up to 20 wt pct partially stabilized zirconia. A mixture of molybdenum and molybdenum sulfide was used as the reference electrode, while SrS, allowed to form in situ during the sensing of sulfur, formed the auxiliary electrode. The sensor behavior in terms of response time, lifetime to failure, and possible reaction mechanisms is discussed in this article. The results were in very good agreement with combustion analysis by conventional LECO.
ISSN:1073-5615
1543-1916
DOI:10.1007/s11663-006-0022-y