Yazar "Yasir, Muhammad" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    Investigation into the surface quality and stress corrosion cracking resistance of AISI 316L stainless steel via precision end-milling operation
    (Springer London Ltd, 2021) Yasir, Muhammad; Danish, Mohd; Mia, Mozammel; Gupta, Munish Kumar; Sarikaya, Murat
    This study presents a two-fold investigation on precision end-milling of stainless steel (AISI 316L). First, the impact of end-milling variables (cutting speed and feed rate) on the surface quality (surface roughness, microhardness, and surface morphology) was analyzed. The best surface quality with surface roughness (R-a) 0.65 +/- 0.02 mu m was observed for cutting speed of 140 m/min and 0.025 mm/tooth of feed rate. Microhardness was increased with increment in cutting speed. Second, the impact of surface roughness (R-a) on the stress corrosion cracking under two different mediums, i.e., body solutions (Hank's solution) and 1 M hydrochloric acid solution, was studied. The investigations showed that the samples with higher surface roughness values were more prone to stress corrosion cracking.
  • [ X ]
    Öğe
    MXenes-enhanced vanadium redox flow batteries: A promising energy solution
    (Elsevier, 2024) Ishaq, Muhammad Aaqib; Yasir, Muhammad; Yusoff, Puteri S. M. Megat; Tariq, Adnan; Sarikaya, Murat; Khan, Muhammad Saad
    An increasing call for sustainable energy storage solutions because of the daily growing energy consumption leaves no doubt that vanadium redox flow batteries (VRFBs) are the most prominent ones. Recently, research has come to depict MXene materials, which are 2D nitriding carbides of the transition metals. These MXenes can thus provide a solution to enhance VRFBs performance because of their extraordinary capacity. MXenes are characterized by a good surface area, hydrophilic nature, and conductivity, resulting in considerable improvements in the efficiency of an electrolyte as well as thermal and electrochemical properties. This work reviews the presentday research positioning of using MXenes in VRFBs and focuses on how they could be used to address some of the challenges, such as limited energy density, poor diffusion, and high resistivity in VRFBs. The research is made with the main focus of identifying the European Union (EU) principles and mechanisms of RFBs, especially the key role of vanadium in systems of this type, and also comparing the distinctive features and synthesis methods of MXenes. Comparing the performances of other materials utilized in RFBs helps underline the superb benefits provided by MXene materials in this case. This paper considers the complexities of synthesizing MXenes, as well as their instability issues and the stability of the electrolyte. In the article, an exploration of the state of contemporary MXene-based electrolytes and their social and ecological effects is presented. Lastly, it suggests routes for further investigations by focusing on the building of MXene varieties and the utilization of MXene in the energy storage industry in the future. The results highlight the enormous role of MXenes in remodeling VRFBs to make them eco-friendly and effective. MXenes will therefore contribute to the increase in the percent of renewable energies in the current energy storage alternatives.