PbO-SiO2融体中のPbOの活量におよぼすCaO, Al2O3の影響について
1974 年 90 巻 1031 号 p. 57-61
詳細
1974 年 90 巻 1031 号 p. 57-61
Activities of PbO in the molten PbO-Si02, PbO-Si02-CaO and PbO-Si02-Al203 systems were determined by e. m. f. measurementes employing solid electrolytes.
These experiments were carried out at the temperature range of 900°-1, 050°by means of the following galvanic cells. Ni, NiO (s)/zr-ca-O/Pb, PbO-SiO2 (1) Ni, NiO (s)/Zr-Ca-O /Pb, PbO-SiO2-CaO (1) Ni, NiO (s)/zr-ca-O/Pb, PbO-SiO2-Al2O3 (1)
From these experimental results, it has been shown that the activity of PbO in the molten PbO-SiO2 system had large negative deviation from Raoult's law and was in a good agreement with previous reliable values and the activity of PbO was considerably increased with increasing of CaO content and was increased slightly by the addition of Al203.
