Electrical conductivity of pbo-siO2 liquids containing pb precipitates

Uday Pal, T. Debroy, G. Simkovich

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The phenomena of dispersion and growth of metallic lead from lead silicate melts in the composition range Xpbo = 0.45 to Xpbo = 0.6 at 1103 K were studied utilizing conductivity measurements. The conductivity of the molten silicate was found to be independent of the partial pressure of oxygen. However, in the presence of a reducing atmosphere viz CO or H2-Ar mixtures, dispersion and growth of metallic lead take place causing a change in the composition of the lead silicate melt and a change in the conductivity. The increase in the observed conductivity of the PbO-SiO2 melt during the initial stages of reduction is attributed to the emission of electrons from the dispersed lead particles, an effect which was further verified by Seebeck measurements. Also, the decrease in the observed conductivity during the subsequent period of reduction is attributed to the change in the composition of the molten silicate coupled with the growth and settling of lead particles.

Original languageEnglish (US)
Pages (from-to)295-302
Number of pages8
JournalCanadian Metallurgical Quarterly
Volume23
Issue number3
DOIs
StatePublished - Jan 1 1984

Fingerprint

Precipitates
Lead
Silicates
Liquids
Molten materials
Chemical analysis
Carbon Monoxide
Partial pressure
Oxygen
Electric Conductivity
Electrons
lead silicate

All Science Journal Classification (ASJC) codes

  • Metals and Alloys
  • Industrial and Manufacturing Engineering

Cite this

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abstract = "The phenomena of dispersion and growth of metallic lead from lead silicate melts in the composition range Xpbo = 0.45 to Xpbo = 0.6 at 1103 K were studied utilizing conductivity measurements. The conductivity of the molten silicate was found to be independent of the partial pressure of oxygen. However, in the presence of a reducing atmosphere viz CO or H2-Ar mixtures, dispersion and growth of metallic lead take place causing a change in the composition of the lead silicate melt and a change in the conductivity. The increase in the observed conductivity of the PbO-SiO2 melt during the initial stages of reduction is attributed to the emission of electrons from the dispersed lead particles, an effect which was further verified by Seebeck measurements. Also, the decrease in the observed conductivity during the subsequent period of reduction is attributed to the change in the composition of the molten silicate coupled with the growth and settling of lead particles.",
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Electrical conductivity of pbo-siO2 liquids containing pb precipitates. / Pal, Uday; Debroy, T.; Simkovich, G.

In: Canadian Metallurgical Quarterly, Vol. 23, No. 3, 01.01.1984, p. 295-302.

Research output: Contribution to journalArticle

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AU - Simkovich, G.

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