Influence of nano TiO2/Micro (SiC/B4C) Reinforcement on the Mechanical, Wear and Corrosion Behaviour of A356 Metal Matrix Composite

This work investigates the distribution and the effect of synthesized nano TiO2, micro SiC and B4C particle on the aluminium (A356) metal matrix composites (AMMC). The consequences of this reinforcement on the mechanical, tribology and corrosion behaviour of the AMMC matrix are analyzed. The nano TiO2 is synthesized by wet chemistry sol-gel process, and the reinforcements are added with A-356 by stir casting method. The ASTM standard test specimens are characterized through mechanical, tribology, and corrosion tests for identifying their properties. The metallurgical characterization has been deliberated through XRD and SEM with EDS. in the tensile test results, the percentage of elongation is dropped drastically by 73% due to the enhanced volume % of nano TiO2, micro SiC, and B4C particles. The particle addition of the wear rate and weight loss are reduced at different volume percentages of the A356 matrix. The time plays a significant role in the corrosion rate. The test results also confirm that the corrosion rate is comparatively minimum in 24 hrs (592.35 mm/yr) duration than the 48 hrs (646.368 mm/yr) in both the solutions

Characterization of electrical conductivity and dielectric properties of electroless NiP/rGO composite coated hemp fiber with various weight% of rGO and coating duration

The present study made an attempt to develop a conductive hemp fiber (HF) through an electroless Ni-P composite coating with reduced graphene oxide (rGO) as reinforcement. Four different Ni-P/rGO coated fibers were prepared with the variations in the coating time (20/40 min) and weight percentages of rGO (5/10 %). The coated fibers were characterized using various tools like: Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and field-emission scanning electron microscopy (FESEM), to identify the functional groups, phase structure, and morphological changes, induced by the rGO reinforcement. The coating duration and weight percentage of rGO had influenced the dielectric properties and electrical conductivity. In comparison, the coating duration of 40 min with 10 % addition of rGO has enhanced the electrical conductivity to 13.75 % and 37.5 % respectively. Furthermore, the mechanism behind the improvement in the conductivity is detailed in this study

Effects of incorporating cellulose fibers from Yucca treculeana L. on the thermal characteristics of green composites based on high-density poly-ethylene: An eco-friendly material for cleaner production

This work has developed advanced technical applications in clean production based on a biocomposite high-density polyethylene (HDPE) reinforced cellulosic Yucca treculeana L. fibers (YTFs) from agriculture waste leaves. Once the extraction was complete, the fibers were chemically treated with a low concentration (3% for 4 h) of sodium bicarbonate (NaHCO₃) to remove impurities from their surface and increase their adhesion capacity. Furthermore, this work aimed to understand how adding YTFs (10%, 20%, and 30%) influences the dynamic properties of the polymer-based clean production biocomposites. The impact of the additions on the damping behavior in terms of loss modulus (E″), storage modulus (E′), glass transition temperature (Tg), and loss factor (tanδ) of YTFs/HDPE biocomposites was evaluated at a frequency of 1 Hz using the dynamic mechanical analysis. In particular. According to the results, E′ is significantly improved by adding YTFs. Furthermore, to reach a Tg of about 80 °C, YF30/HDPE offers a tanδ of 0.164, an E′ of 2491 MPa, and an E″ of 223 MPa. Scanning electron microscope images reveal a fiber-polymer interface that adheres firmly to the HDPE matrix. This study highlights the promising potential of YF/HDPE biocomposites as sustainable and cost-effective replacements for conventional materials in diverse applications. Indeed, given its load-bearing capacity and recyclability, this type of biocomposites would be a wise choice for manufacturing automotive interior trim, sporting goods, and eco-friendly building materials. Further research and development could optimize the properties of these biocomposites and extend their use to various cleaner production industries