Abstract A Study Has Been Made On A New Type Of Wear Resistant/High Strength Iron-Manganse-Molybdenum Steel. This Study Includes The Influence Of Composition And Heat Treatment On The Mechanical Properties. The Exceptional Work-Hardening Rate Is Due To Strain-Induced Formation Of Lath Martensite Which Itself Also Takes Part In The Work-Hardening Process. The Influence Of Higher Molybdenum Contents Was Evident In Preventing Brittleness Of The Solution Treated Steels. An Optimum Composition Ran...
ABSTRACT A study has been made on a new type of wear resistant/high strength iron-manganse-molybdenum steel. This study includes the influence of composition and heat treatment on the mechanical properties. The exceptional work-hardening rate is due to strain-induced formation of lath martensite which itself also takes part in the work-hardening process. The influence of higher molybdenum contents was evident in preventing brittleness of the solution treated steels. An optimum composition ran...
Abstract: The properties of trimer Cs3X3 and tetramer Cs4X4 (X = Br, I) molecules have been studied using DFT with B3LYP5 functional and MP2 and MP4 methods. Two equilibrium geometrical structures of trimers, hexagonal (D3 h) and “butterflyshaped” (Cs), and one for tetramers, distorted cubic (Td), are confirmed to exist; geometrical parameters and vibrational spectra are determined. The relative concentration of Cs3X3 isomers has been evaluated; the butterfly-shaped isomer dominates over ...
ABSTRACT Global uncertainty over fossil fuels security provides the impetus for the development of fuels from renewable feedstocks. A promising route to diesel is available through transesterification of vegetable oils. In this work, there is a novel development of the true liquid crystal templating approach to the synthesis of uniformly dispersed ordered porous mixed oxides. Via this route, a family of mesoporous and mesomacroporous MgO/SBA-15 and CaO/SBA-15 catalysts with metal loading in t...
ABSTRACT Nanocrystalline zinc oxide particles were synthesized via sol-gel method using zinc acetate as precursor. Calcination temperature was varied to determine its effect on particle size. The resultant samples were subjected to X-ray Diffraction (XRD), Fourier Transform Infra-Red (FTIR), UVvisible and Scanning Electron Microscopy (SEM) characterization techniques. X-ray diffraction results showed nanocrystalline wurtzite ZnO particles with crystallite size ranging from 16 nm to 30 nm resp...
Graphene has attracted world-wide attention due to its intriguing set of properties. However, the production of graphene on the bulk scale remains a significant challenge which is limiting its uptake in applications, particularly composites. The exfoliation of graphene in solvents using ultrasonic energy is the most promising approach to-date for the large scale production of graphene flakes. The process relies on a good interaction between the graphene and the solvent used. This interac...