International Journal of Advanced Nano Computing and Analytics

Microstructural and Thermal Properties of the Mechanically Alloyed Fe3Al Powders Doped with Boron

Mohsen Mhadhbi, Miloud Driss, Brahim Safi — Tue, 02 Jul 2024 04:20:36 -0500

A nanocrystalline Fe₃Al powders free and doped with boron was prepared by mechanical alloying (MA) of Fe and Al elemental powders using a high-energy planetary ball mill. The evolution of microstructure and the thermal behaviour of the MA Fe₃Al powders have been studied using X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX) and differential scanning calorimetry (DSC). From these findings, it is clear that the crystallite size was refined and that the lattice parameter was increased by addition of boron. The results obtained by DSC revealed that the addition of boron results a decrease of microstructural parameters and recrystallization take place.

Coating of Carbon Black (CB) and Graphene Oxides (GOs) with Magnetite (Fe3O4)

Fri, 23 Aug 2024 01:33:05 -0500

Composites containing iron oxides are obtained by the co-precipitation of iron(II) and iron(III) compounds in the presence of different substrates in an alkaline environment. Newly synthesized graphene oxide (GO), reduced graphene oxide (rCO) and carbon black (CB) are used as substrates. Methods of obtaining GO–amorphous iron compound, rGO–Fe₃O₄, and CB–Fe₃O₄ composites are developed. It is determined that rGO–Fe₃O₄ and CB–Fe₃O₄magnetic composites can be obtained at 70–75°C, while in the presence of GO, a non-magnetic composite containing an amorphous iron compound is formed under the same conditions. This composite, when heated in vacuum at 170–175°C, undergoes exfoliation, in result of which a powder composite rGO–amorphous iron compound is formed, the volume of which is 2.7 times greater than that of initial powder. Partial reduction of the formed composite takes place at 550°C and rGO–Fe₃O₄ is obtained. Formation of the magnetite phase is determined by XRD (X-Ray Diffraction) analysis. The structural-morphological study of the synthesized composites is carried out by the SEM (Scanning Electron Microscopy) method. Their magnetic characteristics are studied using VSM (Vibrating Sample Magnetometry) method.

A Bird’s Eye View of Nanorobotics and Assembly Automations: A Revolutionary Convergence

Rajib Biswas — Mon, 26 Aug 2024 00:00:00 -0500

Over the past few decades, technology has advanced quickly, leading to amazing advances in a wide range of sectors. A new and exciting area called nanorobotics has emerged from the combination of nanotechnology and robotics. The development of tiny devices with nanoscale performance is the goal of this field. Among these, assembly automation and nanorobotics stand out as cutting-edge fields with enormous promise to revolutionize business, healthcare, and daily living. The development and control of robots at the nanoscale, usually between 1 and 100 nanometers, is known as nanorobotics. Conversely, assembly automations describe the employment of robots and automated systems to build things with little to no human involvement. Due to the growing need for accuracy and efficiency in industrial processes, assembly automation has advanced significantly at the same time as robotics. This article delves into the complexities of nanorobotics and assembly automation, along with their synergies, applications, problems, and prospects.