Production of CuNiSi Composites by Powder Metallurgy Method: Effects of Ti on the Microstructural and Corrosion Properties

Abstract

In this study, composite samples were produced by supplementing the CuNiSi powder mixture with Ti particles at different weight ratios using the powder metallurgy (PM) method. The prepared CuNiSi and Ti powder mixtures were turned into pellets by cold pressing under 500 MPa pressure. The pelletized samples were subjected to sintering in an atmosphere-controlled oven at 900 ℃ for 2 hours. Scanning electron microscopy (SEM-EDS), SEM-Mapping and corrosion experiments were performed to determine the microstructures of the produced samples. From the microstructure results, it was determined that Ti particles were distributed homogeneously within the structure. As the amount of Ti increased, the resistance of the composite to corrosion increased. In addition to that, as the amount of Ti increased, the resistance of the composite to corrosion decreased.

Keywords

• CuNiSi composite
• Powder metallurgy
• Ti reinforced
• Microstructure
• Corrosion

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