Powder-solution-composite technique for measuring electrical conductivity of ceramic powders

B. J. Ingram, Thomas O Mason

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A method for measuring the conductivity of ceramic powders has been developed using effective medium theory and impedance spectroscopy. Powders to be tested are mixed with aqueous solutions of varying NaCl concentrations to form a composite slurry. The impedance response of these powder-solution-composites (PSCs) is measured and analyzed using composite equivalent circuit and effective medium theories. Values obtained for a test powder of copper aluminate (CuAlO2) match closely to four-point dc values measured on bulk sintered bars. A comparison was also made in a system with highly composition-dependent conductivity (YITO, In2-2x-2y Y2xSn2yO3, 0.08 ≤ × ≤ 0.20) to evaluate the upper and lower bounds for accurate measurements. Results from the PSC method matched the sintered bar four-point dc values within the range of NaCl solutions employed (0.5-10-4 S/cm).

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume150
Issue number8
DOIs
Publication statusPublished - Aug 2003

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Powders
ceramics
electrical resistivity
composite materials
Composite materials
impedance
conductivity
equivalent circuits
Equivalent circuits
Copper
Electric Conductivity
Spectroscopy
aqueous solutions
copper
Chemical analysis
spectroscopy

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Powder-solution-composite technique for measuring electrical conductivity of ceramic powders. / Ingram, B. J.; Mason, Thomas O.

In: Journal of the Electrochemical Society, Vol. 150, No. 8, 08.2003.

Research output: Contribution to journalArticle

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