液体 PbO-SiO_2, PbO-GeO_2, PbO-P_2O_5, PbO-B_2O_3 および PbO-SiO_2-GeO_2 系の電気伝導度

概要

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The electric conductivity of liquid PbO-SiO_2, PbO-GeO_2, PbO-P_2O_5, PbO-B_2O_3 and PbO-SiO_2-GeO_2 systems have been measured at the frequency of 1000 c/sec. The conductivity of each system increases as the temperature increases. The Arrhenius type plots show a linear relationship and the activation energies for the binary systems range from 7.7 to 9.8 kcal/mol at the composition of 90 mol% PbO. The activation energies for electric conduction increase and the conductivities decrease with increasing acid oxide concentration. The variations of the conductivity by acid oxide concentration is suggested to be due to change of the fraction of anionic species in the melts. Ionic distribution for the system PbO-SiO_2 was calculated by the equations proposed by C. R. MASSON and the relations with the conductivity have been discussed. On the assumption that Pb^<2+> is the sole carrier of electric conduction, the contribution of the mobility of Pb^<2+> to the conduction is supposed to be larger than that of the number of Pb^<2+> ions.
社団法人日本鉄鋼協会の論文
1969-06-01