Electrical Resistivity and Mechanical Properties of Tungsten Carbide Reinforced Copper Alloy Composites: Experimental Investigation | Chapter 10 | New Approaches in Engineering Research Vol. 15

 This paper discusses the electrical, mechanical, and physical properties of Cu-WC composites. Because of its high electrical and thermal conductivities, low cost, and ease of production, copper is commonly used as a material for electrical connections. Using the liquid metallurgical technique, composites of copper alloy containing 0–8 weight percent WC were created by stirring molten alloy to obtain vortex using a steel stirrer covered with alumina and spinning at 500 rpm. The experimental results showed that as the WC content in the composites increases, the density of the composites increases, which is compatible with the mixtures rule values. The hardness and ultimate tensile strength of Cu–WC composites increased as the WC concentration in the matrix increased, but ductility decreased. A model study of composites was performed for ultimate tensile strength and hardness, and it was discovered that the approximate mechanics of materials prediction Paul model is consistent with experimental results. The experimental results matched the theoretical electrical resistivity of composites data calculated using the P.G Klemens model.

Author(S) Details

B. M. Girish
Department of Mechanical Engineering, Alliance College of Engineering and Design, Alliance University, Bangalore, Karnataka, 562106, India.

B. R. Basawaraj
Department of Aerospace Propulsion Technology, Center for PG Studies, Visvesvaraya Technological University, Muddenahalli, Karnataka, 562101, India.

B. M. Satish
Department of Mechanical Engineering, Sree Vidyanikethan Engineering College, Tirupati, Andra Pradesh, 517102, India.

D. R. Somashekar
Raj Kumar Goel Institute of Technology, Ghaziabad, Uttar Pradesh, 201003, India.

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Nano-sized WO3 Structures via Novel Chemical Approach: Temperature Influence | Chapter 1 | Newest Updates in Physical Science Research Vol. 3

 Due to its promising and remarkable properties, tungsten trioxide (WO3) has gotten a lot of attention. The starting material for the preparation of WO3 nanostructures in this study was tungsten carbide (WC). To confirm the transformation of WC to WO3 and investigate the temperature effect on these nanostructures, the obtained samples were annealed at various temperatures and characterised using various techniques. After annealing at 500 and 600°C for 5 hours in an air atmosphere, the prepared WO3 nanostructures crystallised into a monoclinic phase, according to the X-ray diffraction (XRD) pattern. The temperature effect on the morphologies of nanostructures was highlighted by scanning electron microscopy (SEM) images. The nanostructures have a rod-like shape with uniform distribution after annealing at 500°C. However, the SEM picture taken at 600°C reveals an exceptional porous morphology with a hollow sphere-like shape. The structural composition and purity of the formed WO3 were verified using Fourier transform infrared (FTIR) spectroscopy. Our simple method proved to be a promising route for preparing WO3 nanostructures as high-performance materials for advanced applications, based on the experimental results.

Author (s) Details

Rhizlane Hatel
Group of Polymers and Nanomaterials, Laboratory of Solid State Physics, Faculty of Sciences Dhar el Mahraz, University Sidi Mohammed ben Abdellah, P.O.Box 1796, Atlas, Fez, Morocco.

Mimouna Baitoul
Group of Polymers and Nanomaterials, Laboratory of Solid State Physics, Faculty of Sciences Dhar el Mahraz, University Sidi Mohammed ben Abdellah, P.O.Box 1796, Atlas, Fez, Morocco.

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