Abstract: Journal of Material Sciences & Applied Engineering

Abstract:
A (Pbx, Fey, Cz) Oe (Abbreviated as PFCO) matrix composite bounded with an alumina ceramic was synthesized by mixing the powders of pure lead (Pb), pure iron (Fe), graphite (C) and pure nickel (Ni) with mass percentage of (65%Pb, 25%Fe, 5%Ni, 5%C) under atmospheric pressure at a maximum temperature of 1530℃. And the mixture of pure lead, pure iron, graphite and pure nickel can be used as a new kind of brazing materials for alumina ceramics. The phase composition, cross-sectional microstructure, hardness, ferromagnetism and insulating properties of the PFCO matrix composite were analyzed by means of scanning electron microscope (SEM), energy dispersive spectrum (EDS), optical microscope, Vickers hardness tester, X-ray diffractometer (XRD), a permanent magnet and a multimeter. The PFCO matrix composite exhibits favorable wettability with the alumina ceramic and is bounded to an alumina ceramic through an interface and is composed of the PFCO matrix composite, PbO and Fe3O4. The PFCO matrix composite belongs to ferromagnetism and insulating material with 301Hv.