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- Title
Experimental Liquidus Studies of the Pb-Fe-Si-O System in Equilibrium with Metallic Pb.
- Authors
Shevchenko, M.; Jak, E.
- Abstract
Phase equilibria of the Pb-Fe-Si-O system have been investigated at 943 K to 1773 K (670 °C to 1500 °C) for oxide liquid in equilibrium with liquid Pb metal and solid oxide phases: (a) quartz, tridymite, or cristobalite; (b) (fayalite + tridymite) or (fayalite + spinel); (c) spinel (FeO); (d) complex lead-iron silicates (melanotekite PbO·FeO·SiO, barysilite 8PbO·FeO·6SiO, 5PbO·FeO·SiO, and 6PbO·FeO·SiO); (e) lead silicates (PbSiO, PbSiO); (f) lead ferrites (magnetoplumbite PbFeO solid solution range); and (g) lead oxide (PbO, massicot). High-temperature equilibration on primary phase or iridium substrates, followed by quenching and direct measurement of Pb, Fe, and Si concentrations in the phases with the electron probe X-ray microanalysis, has been used to accurately characterize the system in equilibrium with Pb metal. All results are projected onto the PbO-'FeO'-SiO plane for presentation purposes. The present study is the first systematic characterization of liquidus over a wide range of compositions in this system in equilibrium with metallic Pb.
- Subjects
LEAD alloys; LIQUIDUS temperature; EQUILIBRIUM constant (Chemistry); CRISTOBALITE; QUENCHING (Chemistry); SPINEL group
- Publication
Metallurgical & Materials Transactions. Part B, 2018, Vol 49, Issue 1, p159
- ISSN
1073-5615
- Publication type
Article
- DOI
10.1007/s11663-017-1136-0