Materials Literature
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The main aim of this paper is to investigate the crystallinity and hardness properties of Al-Cu/SiCp matrix composite (AMC) materials. The materials were prepared using a noble stir casting technique by varying the percentage of Cu in the Al-Cu matrix. Qualitative X-ray analysis has been carried out to characterize th…
In this article, the effect of service time of centrifugal pan on glass wool has been studied in centrifugal-spinneret-blow (CSB) process. Glass wool was sampled every 24 h and examined by scanning electron microscopy (SEM) and vertical optical microscopy (VOM). The relationship between mean fiber diameter and service…
Little information has been known on the initial – stage oxidation if there is water vapor involved. Cr samples of 10 mm × 10 mm × 1 mm were isothermally oxidized in dry and wet environment respectively for 86.4 ks. Compact and even surface of Cr2O3 was formed on samples oxidized in dry environment. However, the abili…
This article reports on the electrical properties of porous silicon nanostructures (PSiNs) in term of its surface topography. In this study, the PsiNs samples were prepared by using different current density during the electrochemical etching of p-type silicon wafer. PSiNs has been investigated its electrical properti…
SrRuO(3) is a strong itinerant ferromagnet showing many features of 'bad metals' together with Fermi liquid behavior at very low temperature. The intriguing magnetic and transport properties of SrRuO(3) are tightly related to structure, as commonly observed in transition metal oxides. Here we report on the correlation…
The effect of RF power on the formation and morphology evolution of ZnO nanostructured thin films deposited by magnetron sputtering are presented. This project focused on electrical, optical and structural properties of ZnO thin films. The effect of variation of RF power at 50 watt-250 watt at 200 °C on glass substrat…
Five types of selected tropical light hardwoods were chemically modified with benzene diazonium salt to improve their physical and mechanical properties. Benzene diazonium salt underwent a coupling reaction with wood which was confirmed through FT-IR analysis. The compressive modulus of the treated wood increased, whe…
Since more than ten years, the focuses on environmental aspects have lead to a need to adapt technical solutions for road applications regarding the sustainable development. In France, to answer to these preoccupations, the Enrobés à Module Elevé (EME - High Modulus Asphalt mixes, in english) give, since more than 20…
In their tubelike phase, nanowire-adsorbed polymers exhibit strong structural similarities to morphologies known from single-walled carbon (hexagonal) and boron (triangular) nanotubes. Since boron/boron nitride tubes require some disorder for stability the triangular polymer tubes provide a closer analog to the carbon…
The camphor-grown pristine carbon nanotubes (CNT) was annealed by a single-stage thermal annealing system through controlled ambient in air, argon and nitrogen, are reported. Field emission scanning electron microscopy images confirmed that the heat treatment process gives a place to re-ordering carbon nanostructures…
Anticorrosive oxide films were successfully prepared on AZ91D magnesium alloy by chemical conversion coating in La (NO3)3 electrolytes with and without NaVO3. The morphologies and chemical composition were characterized by optical microscope, scanning electron microscope (SEM) and energy dispersive analysis (EDX). The…
Compact coplanar waveguide (CPW)-fed zeroth-order resonant (ZOR) antennas with broad bandwidth are presented in this paper. The ZOR characteristic is introduced by the composite right/left-handed (CRLH) unit cell on the CPW single layer substrate. The modified structure with a gradual change of the feeding part enable…
Pretreatment on tungsten carbide (WC-Co) surface is critical for obtaining perfectly adherent diamond coatings by chemical vapor deposition (CVD). The carbide surface should have high roughness to facilitate diamond nucleation and adhesion. The presence of cobalt—common binder for tungsten carbide—on the surface to be…
The application of ultrasonic vibrations superimposed on wire drawing, deep drawing, upsetting and rolling has been developed in the literature before. Few attempts have ever been made to develop the application of the ultrasonic vibration to blanking process. This paper reports an investigation into the effects of th…
We have determined temperature-dependent emissivity of coatings produced from annealed mixtures of BaCO 3 and TiO 2 powders and ZrO 2 micro- or nanoparticles. The results demonstrate that the best coatings have been obtained using ZrO 2 microparticles.
This paper presents an experimental study of the pyrochlore-to-perovskite phase transition in ferroelectric lead zirconate titanate (PZT) films grown on silicon substrates by rf magnetron sputtering and annealed in air or in an inert (argon) atmosphere at temperatures of up to 600°C and atmospheric pressure. Simultane…
A series of semicrystalline microcellular materials were prepared by the foaming technology using supercritical fluids. The distribution of multi‐size microcellulars and multi‐layer arrangement was observed by scanning electronic microscopy. By controlling the foaming condition accurately, the alternated arrangement o…
Abstract Cecidiomyces santessoniigen. & sp. nov., found onStereocaulonspecies on the subantarctic Macquarie Island (Tasmania, Australia), is described, illustrated and compared with other morphologically similar genera and species. It is characterized by a lichenicolous habit, gall-formation, caespitose to sporodochia…
The article describes a feasibility study to assess the use of nanotubes-based composites to mitigate tail buffeting. The buffeting of a representative business jet rudder is considered as case study. The baseline rudder configuration consists in a sandwich structure with honeycomb core and carbon/epoxy IM7/8552 skins…
We study palladium hydride nanowires of different sizes and hydrogen concentrations at 300 K using molecular dynamic simulations. Strong surface segregation of hydrogen with a depletion zone behind is observed in the palladium hydride nanowires. We also show that lattice reorientation is controlled by the hydrogen con…