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المؤلفMatli, Penchal Reddy
المؤلفUbaid, Fareeha
المؤلفShakoor, Rana Abdul
المؤلفParande, Gururaj
المؤلفManakari, Vyasaraj
المؤلفYusuf, Moinuddin
المؤلفAmer Mohamed, Adel Mohamed
المؤلفGupta, Manoj
تاريخ الإتاحة2022-10-05T07:23:07Z
تاريخ النشر2017
اسم المنشورRSC Advances
المصدرScopus
معرّف المصادر الموحدhttp://dx.doi.org/10.1039/c7ra04148a
معرّف المصادر الموحدhttp://hdl.handle.net/10576/34846
الملخصIn this study, nano-sized Si3N4 (0, 0.5, 1.0 and 1.5 vol%)/Al composites were fabricated using a powder metallurgy method involving microwave sintering technique followed by hot extrusion. The influence of Si3N4 content on the structural, mechanical and thermal behaviour of Al–Si3N4 nanocomposites was systematically investigated. Electron microscopy examination reveals the uniform distribution of hard Si3N4 nanoparticles in the soft Al matrix. The compressive and tensile strengths of Al composites increased with the increase of Si3N4 content while the ductility decreased. The thermal expansion coefficient of the Al composite decreased with the progressive addition of hard Si3N4 nanoparticles. Overall, hot extruded Al–1.5 vol% Si3N4 nanocomposites exhibited the best combination of tensile, compressive, hardness, Young's modulus and thermal properties of 191 ± 4 MPa, 412 ± 3 MPa, 16.3 ± 0.8 GPa, 94 ± 2 GPa and 19.3 μ K−1, respectively. Tensile tests performed at 200 °C revealed that the tensile strength reduced by ∼35% when compared to the strength at room temperature. The strength, however, was still higher compared to that of the pure Al at 200 °C. The major enhancement in the strength of the nanocomposites is primarily attributed to the presence of uniformly distributed nano-sized Si3N4 nanoparticles in the Al matrix.
اللغةen
الناشرRoyal Society of Chemistry
الموضوعAl-Si3N4
nanocomposites
aluminum (Al)
العنوانImproved properties of Al-Si3N4 nanocomposites fabricated through a microwave sintering and hot extrusion process
النوعArticle
الصفحات34401-34410
رقم العدد55
رقم المجلد7
dc.accessType Open Access


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