•Journal•ISSN: 2162-8424
American Journal of Materials Science
About: American Journal of Materials Science is an academic journal. The journal publishes majorly in the area(s): Epoxy & Ultimate tensile strength. It has an ISSN identifier of 2162-8424. It is also open access. Over the lifetime, 304 publications have been published receiving 2086 citations.
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TL;DR: The structure of zeolites starting from atomic level to the complex networks of channels and voids that permeate the material is described in this article, and the resulting properties are described relating them to the crystal structure and the chemistry.
Abstract: This review article describes the structure of zeolites starting from atomic level to the complex networks of channels and voids that permeate the material. The chemistry within the material is outlined relating it to its crystal structure. The resulting properties are described relating them to the crystal structure and the chemistry. Finally, the applications of the material are summarised relating them to the material crystal structure, chemistry and properties.
120 citations
TL;DR: In this article, the benefits due to Mg, its alloy materials, manufacturing methods and applications in automotive sector are reviewed and the directions for the development of new magnesium alloys based on properties.
Abstract: Magnesium is very attractive material as it has the combination of good strength, low weight and good quality. The usage of magnesium and its alloys has considerably increased over the past ten years. In structural applications, where weight plays a major role, magnesium is a good choice. Its recyclability property also gives an edge. The use of magnesium and its alloys in automotive components was limited in the early sixties and seventies but today the awareness on fuel savings and environmental protection through reduced CO2 emissions makes this material attractive. This paper reviews the benefits due to Mg, its alloy materials, manufacturing methods and applications in automotive sector. It also summarizes directions for the development of new magnesium alloys based on properties.
81 citations
TL;DR: In this article, a nanocrystalline tin oxide (SnO2) powders have been synthesized by a low temperature chemical precipitation method and as-prepared and heated powders were characterized by XRD, SEM and luminescence studies.
Abstract: Nanocrystalline tin oxide (SnO2) powders have been synthesized by a low temperature chemical precipitation method. As-prepared and heated powders were characterized by XRD, SEM and luminescence studies. Crystallographic parameters such as crystallite size, lattice parameters and dislocation density in SnO2 nanocrystalline powders were calcu- lated by Rietveld analysis. The average crystallite size of 9 - 43 nm was obtained for SnO2 powders through controlled heat treatment process. The washed powders morphology was almost spherical in shape and average agglomerate crystal size was between 0.2 - 0.4 μm. A Photoluminescence (PL) study was measured at an excitation wavelength of 265 nm for as-prepared and annealed powders; it showed a broad emission peak at 417 nm for all powders. The highest PL emission was attained for the powder annealed at 500℃. The synthesized nanocrystalline SnO2 oxide semiconductor material could be suitable for making optoelectronic and sensor devices.
74 citations
TL;DR: In this article, the effect of film thickness on its structural and optical properties was studied using X-ray diffraction, atomic force microscopy, transmission measurement, and four-point probe method.
Abstract: Tin Selenide (SnSe) thin films were prepared from the pulverized compound material by thermal evaporation method, to study the effect of film thickness on its structural, and optical properties. The different thicknesses of SnSe thin films, from 150 nm to 500 nm, were grown on glass substrate held at room temperature. X-ray diffraction, atomic force microscopy, transmission measurement, and four-point probe method were used to characterize the thin films. The optical transmission spectra suggests, the energy band gap decreases with increasing the film thickness. The electrical resistivity shows that the films were semi-conducting in behavior having p-type conductivity.
62 citations
Journal Article•
TL;DR: In this article, the behavior of Ghanaian based bauxite red mud-Tetegbu clay composites have been investigated for their applicability in the ceramic brick construction industry as a means of recycling the Bauxite waste.
Abstract: The behaviour of Ghanaian based bauxite red mud-Tetegbu clay composites have been investigated for their applicability in the ceramic brick construction industry as a means of recycling the bauxite waste. The initial raw samp les were characterized by X-ray d iffraction (XRD), X-ray Fluorescence spectroscopy (XRF), Fourier transform infrared spectroscopy (FTIR), and thermograv imetric analysis (Tg-DTA). The red mud -clay co mposites have been formu lated as 80% -20%, 70%-30%, 60%-40%, 50%-50% and fired at sintering temperatures of 800o C, 900o C and 1100o C. Generally, mechanical strengths (modulus of rupture) increased with higher sintering temperature. The results obtained for various characterizat ion analyses such as bulk densities of 1.59 g/cm 3 and 1.51 g/cm 3 co mpare very well with literature and hold
60 citations