Investigation of characteristics of Cu based, Co-CrC reinforced composites produced by powder metallurgy method

Uzun, Mahir; Çetin, Mehmet Sinan

doi:10.1016/j.apt.2021.04.009

Cited by 25 publications

(8 citation statements)

References 61 publications

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“…The density of composite material can be affected by many parameters, such as the matrix, the structure of the particles, and the production method applied [35]. In our previous study, it was found that the hybrid reinforcements (Ti-B-SiC) added to copper decreased the density after a certain ratio [36], which was also reported in previous studies [37].…”

Section: Density Testssupporting

confidence: 66%

Evaluation of Mechanical and Tribological Aspect of Self-Lubricating Cu-6Gr Composites Reinforced with SiC–WC Hybrid Particles

et al. 2022

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Because of their high thermal conductivity, good corrosion resistance, and great mechanical qualities, copper matrix composites are appealing materials utilized in a variety of industries. This study investigates the mechanical properties of copper–graphite (Cu–Gr) matrix composites reinforced with silicon carbide (SiC) and tungsten carbide (WC) particles by hot pressing using powder metallurgy method. The goal is to investigate the influence of the reinforcement ratio on the mechanical characteristics of copper composite materials generated (density, hardness, flexural strength, and wear resistance). SEM, EDS, and X-RD analysis were used to perform metallographic examinations. The highest relative density with a value of 98.558% was determined in the C3 sample. The findings revealed that when the reinforcement ratio was raised, the hardness rose. The highest hardness value was observed in the C6 sample with an increase of 12.52%. Sample C4 (with the lowest SiC and WC particles ratio) had the highest bending stress (233.18 MPa). Bending stress increased by 35.56% compared to the C1 sample. The lowest specific wear rates were found in the C4 sample, with a decrease of 82.57% compared to the C1 sample. The lowest wear rate (6.853 × 10−7 mm3/Nm) also occurred in the C4 sample. The microstructural analysis showed that the hybrid reinforcement particles exhibited a homogeneous distribution in the copper matrix. X-RD analysis showed that there was no intermediate reaction between the parent matrix and the hybrid reinforcements. A good interfacial bond was observed between the matrix structure and the hybrid reinforcements. The motivation of this research was to utilise the advantages of the unique features of SiC–WC hybrid particles to improve the performance of newly developed Cu-6Gr composites for wear-resistance applications.

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Section: Density Testssupporting

confidence: 66%

Evaluation of Mechanical and Tribological Aspect of Self-Lubricating Cu-6Gr Composites Reinforced with SiC–WC Hybrid Particles

et al. 2022

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“…23 Powder particles such as Al 2 O 3 (aluminum oxide), SiC (silicon carbide), WC (tungsten carbide), TiB 2 (titanium diboride) and CNT (carbon nanotube) are used as reinforcement elements. [24][25][26][27] . Among these reinforcements, Al 2 O 3 is the most widely used ceramic powder particle in the dispersion strengthening phase.…”

Section: Introductionmentioning

confidence: 99%

Development of the hardness, three-point bending, and wear behavior of self-lubricating Cu-5Gr/Al₂O₃-Cr₃C₂ hybrid composites

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Uzun

et al. 2023

Journal of Composite Materials

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This research aims to assess the mechanical characteristics of high-performance copper composites made utilizing powder metallurgy. The composites were produced by adding reinforcement elements (Al2O3-Cr3C2) at different rates (3-6–9 wt.%) into copper-graphite (Cu-5Gr) via hot pressing technique. The microstructure, hardness, three-point bending and wear performance were analysed. The results determined that hybrid reinforced composites exhibited higher density, hardness and bending strength compared to Cu-Gr composites. The highest hardness of 73.02 HB was found in the CG-4 (copper graphit-4) sample. The maximum bending stress of 151.06 MPa occurred in sample CG-2. In addition, it was observed that the wear resistance increased significantly with the addition of the hybrid reinforcements. The lowest specific wear rate of 7.961 × 10−7 mm3/N.m occurred in sample CG-6. As a result, 15.92%, 58.16% and 83.21% improvements were achieved in hardness, bending strength and wear performance, respectively. The current work indicates that certain mechanical properties of copper can be improved via the powder metallurgy process and the addition of reinforcements which could expand the applications and use of this metal in different industries.

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“…1 Cu alloys or composites have considerable potential to improve the mechanical properties and hardness. 2,3 Methods for their preparation mainly include powder metallurgy 4,5 , friction stir processing 6 , and electrodeposition 7,8 . The main drawback of powder metallurgy is the non-uniform distribution of the second phase, such as ceramic particles.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Preparation and Properties of Al<sub>2</sub>O<sub>3</sub> Nanoparticles Reinforced Cu-based Composites

Xiang

et al. 2023

Electrochemistry

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Metal Cu has excellent electrical and thermal conductivity, but poor mechanical properties. Incorporating ceramic particles into the Cu matrix to prepare Cu-based composites is one of the most effective methods to improve the mechanical properties. This paper reports a simple and efficient one-step method for the electrochemical preparation of nano-Al2O3 reinforced Cu-based composite; the electrodeposition process and properties of the prepared materials were also studied. Scanning electron microscopy and energy dispersive spectroscopy measurements showed that the Al2O3 nanoparticles were uniformly dispersed in the Cu matrix of the electrodeposited Cu-Al2O3 composites. Incorporating Al2O3 nanoparticles affected the grain size and microstructure of the composites, improving the mechanical properties of the Cu matrix. Increasing the Al2O3 concentration in the electrolyte resulted in the grain size of the composites decreasing to a range of 40.8-98.5 nm. Meanwhile, the preferred orientation of the present composites changed from (111) to (220) crystal plane. The Cu-Al2O3 composite had a tensile strength of 509 MPa, a hardness of 220 Hv, and an elongation to failure of 23.88%, indicating that the material had a high tensile strength while maintaining excellent ductility. Compared with the original monolithic Cu, the performance of the Cu-Al2O3 composite was nearly doubled.

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Investigation of characteristics of Cu based, Co-CrC reinforced composites produced by powder metallurgy method

Cited by 25 publications

References 61 publications

Evaluation of Mechanical and Tribological Aspect of Self-Lubricating Cu-6Gr Composites Reinforced with SiC–WC Hybrid Particles

Evaluation of Mechanical and Tribological Aspect of Self-Lubricating Cu-6Gr Composites Reinforced with SiC–WC Hybrid Particles

Development of the hardness, three-point bending, and wear behavior of self-lubricating Cu-5Gr/Al₂O₃-Cr₃C₂ hybrid composites

Electrochemical Preparation and Properties of Al<sub>2</sub>O<sub>3</sub> Nanoparticles Reinforced Cu-based Composites

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Investigation of characteristics of Cu based, Co-CrC reinforced composites produced by powder metallurgy method

Cited by 25 publications

References 61 publications

Evaluation of Mechanical and Tribological Aspect of Self-Lubricating Cu-6Gr Composites Reinforced with SiC–WC Hybrid Particles

Evaluation of Mechanical and Tribological Aspect of Self-Lubricating Cu-6Gr Composites Reinforced with SiC–WC Hybrid Particles

Development of the hardness, three-point bending, and wear behavior of self-lubricating Cu-5Gr/Al2O3-Cr3C2 hybrid composites

Electrochemical Preparation and Properties of Al<sub>2</sub>O<sub>3</sub> Nanoparticles Reinforced Cu-based Composites

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Development of the hardness, three-point bending, and wear behavior of self-lubricating Cu-5Gr/Al₂O₃-Cr₃C₂ hybrid composites