The lead-zirconium system: binary phases and a series of interstitial compounds of the host Zr5Pb3
作者:Young-Uk Kwon、John D. Corbett
DOI:10.1016/0925-8388(93)90402-9
日期:1993.1
The Pb-Zr system contains the phases Zr(approximately 5.8)Pb (Cr3Si-type), Zr5Pb3 (Mn5Si3) and Zr5Pb4 (Ti5Ga4). Zr5Pb4 as a substoichiometric region above approximately 800-degrees-C, extending to about Zr5Pb3.65 at 1000-degrees-C. Reactive powder sintering in sealed Ta containers at 1000-1350-degrees-C is the most effective route for the synthesis of pure phases of both the binaries and the interstitial derivatives Zr5Pb3Z. Twenty examples of the latter were obtained with Z = Al, Si, P, S, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Ag, Cd, In, Sn, Sb, Te, (Pb), (second period Z were not investigated). Single crystals for Z = Al, Cd, Zn, Pb0.87, Pb0.94 were obtained by metal flux or vapor phase transport reactions, and the last three were quantified by X-ray crystallography. Volume trends as a function of group and period follow metal/covalent radii trends for Z fairly well.