Self-diffusion in molten lead and thallous chlorides

Charles Angell, J. W. Tomlinson

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The tracer diffusion coefficients of both ions in PbCl2 and TlCl have been measured using a technique involving diffusion of the tracer out of an open capillary into an inert bath. The results which are in good agreement with previous work, are described by the relations: in PbCl2 D Pb = 1.4x10-3 exp (-7760±320)/RT, (515-588°C), DCl = 2.55x10-3 exp (-7740±410)/RT, (515-580°C), in TlCl DTl = 7.3x10-3 exp (-4540±240)/RT, (452-526°C), DCl = 7.9x10-4 exp (-4560±460)/RT, (472-542°C). Different techniques which have been used for measuring tracer diffusion coefficients in fused salts are assessed and it is concluded that diffusion out of an open capillary into an inert bath is the most reliable method. The results are discussed in the light of theories of transport in ionic melts; the transport properties are largely determined by short-range forces and not by the coulomb potential.

Original languageEnglish (US)
Pages (from-to)2312-2320
Number of pages9
JournalTransactions of the Faraday Society
Volume61
StatePublished - 1965
Externally publishedYes

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lead chlorides
tracers
Molten materials
chlorides
baths
diffusion coefficient
Fused salts
Coulomb potential
transport properties
Transport properties
salts
Ions
thallium chloride
lead chloride
ions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Self-diffusion in molten lead and thallous chlorides. / Angell, Charles; Tomlinson, J. W.

In: Transactions of the Faraday Society, Vol. 61, 1965, p. 2312-2320.

Research output: Contribution to journalArticle

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