Characteristics study on Bi-Pb Based Alloys Quenched from Melt

Abstract

Abstract:

Three different bismuth-lead systems namely, Wood's alloy (Bi₅₀Pb₂₅Sn_12:5Cd_12:5), Newton's alloy (Bi₅₀Pb_31:2Sn_18:8) and Rose's alloy (Bi₅₀Pb₂₈Sn₂₂), with one used as fusible alloys were quenched from melt by melt spinning technique. Thermal analysis, structure and mechanical properties of all alloys have been studied and analyzed. From X-ray diffraction analysis, an intermetallic compound phase, designated Pb₇Bi₃ is detected. The formation of an intermetallic compound phase causes a pronounced increase in the electrical resistivity. The Wood's alloy containing-cadmium exhibits mechanical properties superior to both the Newton's and Rose's alloys. The presence of cadmium in Wood's alloy decreases its melting point. Wood's alloy has better properties, which make it useful in various applications such as in rotection shields for radiotherapy, locking of mechanical devices and welding at low temperature.

Key words: Thermal properties, Electrical resistivity, Mechanical properties, Radiotherapy and fusible alloys

Rizk Mostafa Shalaby. Characteristics study on Bi-Pb Based Alloys Quenched from Melt[J]. J Mater Sci Technol, 2009, 25(04): 449-453.

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Characteristics study on Bi-Pb Based Alloys Quenched from Melt

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