Tape casting of nickel manganite NTC ceramics for chip thermistors

Tape casting is a reliable route for mass production of precise miniature NTC chip sensors. The present paper describes the development work in tape casting of nickel manganite based NTC formulations. The most suitable dispersion condition of the powder in MEK–ethanol solvent system was determined b...

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Veröffentlicht in:Journal of materials science. Materials in electronics 2008-11, Vol.19 (11), p.1100-1104
Hauptverfasser: Prasanth, N. P., Varghese, Justin M., Prasad, K., Krishnan, Bindu, Seema, A., Dayas, K. R.
Format: Artikel
Sprache:eng
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Zusammenfassung:Tape casting is a reliable route for mass production of precise miniature NTC chip sensors. The present paper describes the development work in tape casting of nickel manganite based NTC formulations. The most suitable dispersion condition of the powder in MEK–ethanol solvent system was determined by rheological and sedimentation studies. The optimized slurry composition for obtaining defect-free tapes was achieved by controlling the amounts of organic additives. The sintered chip samples exhibited 98% theoretical density with an over all shrinkage of 17%.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-007-9475-2