Temperature/Composition Phase Diagram of the System Bi₂O₃‐PbO

Abstract

Cells and ElectricalConduction of Pure and Doped A120J," J . .4m. Ceram. Soc., 54 [9] 444-5 I ( I 97 I ) .

Phase formation and thermal stability of the compounds in the Bi2O3-PbO system

“…The assignment of the thermal effects recorded at temperatures higher than 530~ shown in Table 2, is in good agreement with the phase diagram established by Biefeld and White [10].…”

“…Further investigations carried out by Biefeld and White [10] confirm the existence of the compounds 6Bi2OyPbO; 3Bi2Oy2PbO; 4Bi2Oy5PbO and Bi2Oy3PbO, but not the existence of 3Bi2Oy7PbO. While Vihreva et al [11] indicate as well as the existence of the compound 4Bi2Oy5PbO as well as that of 4Bi2Oy6PbO, other authors [12] show the existence of two polymorphic forms for the compound 4Bi2Oy5PbO.…”

“…A HZG-3 X-ray diffractometer with CoK,~ radiation was used. Phases were identified according to the JCPDS card file [16] and literature data [10,11]. Figure 2 shows the DTA and TG curves of the mixtures corresponding to the formation of the binary compounds, in the temperature range 400-800~ The assignment of the recorded thermal effects is listed in Table 2.…”

“…Mole Fraction PbO Fig. 1 The phase diagram of the Bi203-PbO system [10] Figure 1 shows the phase diagram of the system Bi2Oa-PbO as given by Biefeld and White [10].…”

Electro-catalytically Active, High Surface Area Cathodes for Low Temperature SOFCs

“…EDS analysis confirmed the presence of Bi, Pb and Ru in the glassy regions. The formation of this glassy phase can be explained by reaction of Bi oxide and Pb oxide forming a eutectic phase 45 . The occurrence of this reaction between ESB and lead ruthenate required keeping the composite electrode sintering temperature below 800 °C.…”