Microstructural and Mechanical Properties of Cu-Based Co-Mo-Reinforced Composites Produced by the Powder Metallurgy Method

In this study, 5, 10 and 15 wt.% commercial purity Co-Mo powders are added to Cu powders using the powder metallurgy method. The prepared powder mixtures are shaped under a pressure of 600 MPa in a uniaxial hydraulic a press and then sintered at 1000 °C for 30 min. Scanning electron microscopy is applied for microstructural analysis. In the microstructure analysis, it is seen that as the reinforcement ratio increases, the grain sizes increase, and it is evenly distributed in Cu. A wear test is then carried out. As a result of this test, the weight loss, friction coefficient change and wear diameter change results of the composites are obtained. Abrasion loads are applied at 15, 20 and 25 N for 4000 m. The samples manufactured for the tensile test are subjected to certain loads on a Shimadzu tensile device. As a result of the abrasion and tensile tests, it was determined that the sample reinforced with 5 wt.% Co-Mo has the best mechanical properties.