Influence of B4C nanoparticles on mechanical behaviour of Silicon brass nanocomposite through mechanical alloying and hot pressing |
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| Affiliation: | 1. Department of Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore, 641014, Tamil Nadu, India;2. Centre of Excellence in Corrosion and Surface Engineering (CECASE), National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India;3. Mechanical Engineering Department, Qassim University, Buraidah, 51452, Saudi Arabia;1. National Engineering Research Center for Domestic & Builing Ceramics, Jingdezhen Ceramic Institute, Jingdezhen, 333000, China;2. Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333000, China;1. Laboratory of Infrared Materials and Devices, The Research Institute of Advanced Technologies, Ningbo University, Ningbo, 315211, China;2. Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, 315211, China;3. Laboratory of Glasses and Ceramics, UMR 6226 CNRS-University of Rennes 1, Rennes Cedex, 135042, France;4. Department of Physics, National University of Singapore, 2 Science Drive 3, 117551, Singapore;1. School of Physics and Electronics Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China;2. Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, 430074, China |
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| Abstract: | This research article has concentrated to develop a novel silicon brass of 82Cu4Si14Zn]100-x – x wt.% B4C (x = 0, 3, 6, 9, and 12) nanocomposites which were synthesized by mechanical alloying followed by vacuum hot pressing for consolidation of powders into bulk samples. Single vial planetary ball mill was used to synthesize the nanocomposite powders in which the ball-to-powder ratio of 10:1 with the milling time of 20 h was used. The milled powders were compacted and sintered simultaneously using vacuum hot pressing equipment for 1 h at 900 °C. The structural, mechanical and tribological properties were characterized and investigated by x-ray line profile analysis (XRD), scanning electron microscopy (SEM), electron backscattered diffraction images (EBSD), energy dispersive x-ray spectroscopy (EDS), Vickers microhardness, compression test, and dry sliding wear behaviour analysis. It has been found that B4C nanoparticles had homogeneously distributed and embedded in the nanocrystallite matrix. As a result, the fabricated nanocomposites were exhibited superior properties than the conventional alloy. Here, 12 wt% B4C reinforced silicon brass of bulk nanocomposite was produced higher hardness and compressive strength than the unreinforcement matrix. Further, the worn morphologies were evidenced the mild wear occurred at higher reinforced nanocomposites owing to decohesion and lower wear rate with considerable wear resistance. |
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| Keywords: | Silicon brass Nanocomposites Mechanical alloying Vacuum hot pressing Mechanical properties Wear |
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