Mechanical and corrosion behaviors of developed copper-based metal matrix composites

International Conference on Recent Advances in Materials, Mechanical and Civil Engineering

材料科学;机械制造;土木建筑工程

Kumar Singh, Manvandra^1 ; Kumar Gautam, Rakesh^1 ; Prakash, Rajiv^2 ; Ji, Gopal^2

Department of Mechanical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi

221005, India^1

School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi

221005, India^2

关键词: Composite formation;    Copper matrix composite;    Copper-based composites;    High-energy ball milling;    Mechanical behavior;    Micro and nano-particle;    Microstructural changes;    X-rays diffraction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/330/1/012021/pdf
DOI  :  10.1088/1757-899X/330/1/012021

来源: IOP

【 摘 要 】

This work investigates mechanical properties and corrosion resistances of cast copper-tungsten carbide (WC) metal matrix composites (MMCs). Copper matrix composites have been developed by stir casting technique. Different sizes of micro and nano particles of WC particles are utilized as reinforcement to prepare two copper-based composites, however, nano size of WC particles are prepared by high-energy ball milling. XRD (X-rays diffraction) characterize the materials for involvement of different phases. The mechanical behavior of composites has been studied by Vickers hardness test and compression test; while the corrosion behavior of developed composites is investigated by electrochemical impedance spectroscopy in 0.5 M H2SO4solutions. The results show that hardness, compressive strength and corrosion resistance of copper matrix composites are very high in comparison to that of copper matrix, which attributed to the microstructural changes occurred during composite formation. SEM (Scanning electron microscopy) reveals the morphology of the corroded surfaces.