Interfacial effects on Ag: S nonstoichiometry in silver sulfide/alumina composites

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The relative stoichiometry of Ag2S containing dispersions of 0.2 μm Al2O3 particles was measured as a function of the chemical potential of silver between 158 and 220°C using solid state coulometric titration. For composites consisting of 3.5 m2 of interface area per 1 cm3 of Al2O3Ag2S composite, the effective homogeneity range in comparison to the pure material was as much as 120 times greater for the low temperature phase (α-Ag2S) and 50% greater for the high temperature phase (β-Ag2S). The process was described as that of silver absorption at solid-solid interfaces. Absorption isotherms and partial molar quantities for the interface were determined at 158 and 200°C.

Original languageEnglish (US)
Pages (from-to)117-129
Number of pages13
JournalSolid State Ionics
Volume21
Issue number2
DOIs
StatePublished - 1986

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Aluminum Oxide
sulfides
Silver
Alumina
aluminum oxides
solid-solid interfaces
silver
composite materials
Composite materials
titration
homogeneity
stoichiometry
isotherms
Chemical potential
solid state
Titration
Dispersions
Stoichiometry
Isotherms
Temperature

ASJC Scopus subject areas

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Interfacial effects on Ag : S nonstoichiometry in silver sulfide/alumina composites. / Petuskey, William.

In: Solid State Ionics, Vol. 21, No. 2, 1986, p. 117-129.

Research output: Contribution to journalArticle

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abstract = "The relative stoichiometry of Ag2S containing dispersions of 0.2 μm Al2O3 particles was measured as a function of the chemical potential of silver between 158 and 220°C using solid state coulometric titration. For composites consisting of 3.5 m2 of interface area per 1 cm3 of Al2O3Ag2S composite, the effective homogeneity range in comparison to the pure material was as much as 120 times greater for the low temperature phase (α-Ag2S) and 50{\%} greater for the high temperature phase (β-Ag2S). The process was described as that of silver absorption at solid-solid interfaces. Absorption isotherms and partial molar quantities for the interface were determined at 158 and 200°C.",
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