Showing papers in "Journal of Materials Science & Technology in 2014"

TL;DR: In this article, the main and secondary relaxations of metallic glasses are analyzed and the correlation between the atomic mobility and the thermo-mechanical treatments in metallic glasses is analyzed.

TL;DR: In this article, high purity of nano-hydroxyapatite powders could be obtained at low temperatures, and the crystallinity, crystallite size and Ca/P ratio of the resulting nanoparticles were found to be dependent on the calcination temperature.

TL;DR: A series of copper-bearing titanium alloy, Ti-6Al-4V-xCu (x = 1, 3, 5), were fabricated in the present study in order to reduce the hazard of the bacterial infection problem by means of the strong antibacterial ability of Cu element as discussed by the authors.

TL;DR: In this article, Aloe vera plant mediated synthesis of tetragonal zirconia nanoparticles has been performed and thermogravimetric and differential thermal analysis (TG/DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive x-ray spectroscopy (EDX), atomic force microscopy(AFM), ultraviolet-visible (UV-VIS) technique and Fourier transform infrared spectroscope (FTIR) have been provided for characterizing the nanoparticles.

TL;DR: In this article, a route combining powder metallurgy and subsequent friction stir processing was utilized to fabricate carbon nanotube reinforced Al (CNT/Al) and 6061Al composites.

TL;DR: In this paper, the performance of magnesium (Mg) matrix composites reinforced with low reinforcement content (up to 4-5vol.%) of graphene nanoplates (GNPs) and silicon carbide (SiC) nanoparticles using ball milling and spark plasma sintering (SPS) is reported.

TL;DR: In this paper, the effects of temperature and pressure on density, microstructure and mechanical properties of powder compacts during hot isostatic pressing (HIPping) were investigated.

TL;DR: In this paper, the effects of nano-additive concentration on the structure, phase composition, hardness and anti-corrosion property of the MAO coatings were analyzed by scanning electron microscopy, X-ray diffraction, micro-hardness test and electrochemical method, respectively.

TL;DR: In this paper, a fluoride conversion coating was successfully prepared on AZ31B magnesium alloy by chemical reaction in hydrofluoric acid Morphologies, composition, bonding strength, corrosion properties, in vitro cytotoxicity and antibacterial properties of the coating were investigated, respectively.

TL;DR: In this article, the microstructure and mechanical properties of UFG cylindrical tubes through one to four passes of TCAP process at 200°C were investigated and the microhardness of the processed tube was increased to 98.5 HV after one pass from an initial value of 67 HV.

TL;DR: In this article, the electrochemical behavior of low carbon steel (API 5L grade B) in 1 mol/L HCl solution with different concentrations of N,N′-bis(4-formylphenol)-trimethylenediamine Schiff base was studied by electrochemical techniques and density functional theory analysis.

TL;DR: In this article, the authors tried to find a universal equation to predict the effect of the notch geometry on the strength of materials, which is a very important geometry with widespread applications in engineering structural components.

TL;DR: In this paper, the corrosion behavior of 316L stainless steel (316L SS) was investigated in solutions containing various concentrations of chloride ions by using potentiodynamic polarization, capacitance measurement and Mott-Schottky relationship analysis.

TL;DR: In this paper, the annealed and severely plastic deformed sheets were subjected to friction stir welding (FSW) at different rotation and traverse speeds and several forms of intermetallic compounds were produced.

TL;DR: In this article, a finite element model was developed for a turbine blade with thermal barrier coatings to investigate its failure behavior under cyclic thermal loading, and dangerous regions in ceramic coating were determined in terms of the maximum principal stress criterion.

TL;DR: In this article, un-doped and co-depletionized ZnO nanoparticles with different weight ratios (0.5, 1.0, 1, 5, and 2.0% of Co) were synthesized by a facile and rapid microwave-assisted combustion method using urea as a fuel.

TL;DR: In this article, a self-support friction stir welding (SSFSW) tool with a big concave upper shoulder and a small convex lower shoulder was developed for making reliable welds in aluminum hollow extrusion.

TL;DR: In this article, carbon nanotubes (CNTs) and nano-silicon carbide (nSiC) reinforced aluminium (Al) matrix composites have been successfully fabricated using high-energy ball milling followed by solid-state spark plasma sintering processes.

TL;DR: In this article, three types of photocatalysts were synthesized by metal organic chemical vapor deposition and impregnation methods using the almond shell activated carbon as support, and the catalysts were very efficient for the photodegradation of total organic carbon (TOC) from industrial phosphoric acid solution under UV irradiation.

TL;DR: In this article, the authors reported the synthesis of FeS2 of higher band gap energy (2.75 eV) by using capping reagent and its successive application in organic-inorganic based hybrid solar cells.

TL;DR: In this article, the metastable Bi2O3 photocatalysts with different morphologies were fabricated by means of a chemical precipitation method and the microstructure of as-prepared samples was characterized by X-ray diffraction, transmission electron microscopy and ultraviolet-visible diffusion reflectance spectroscopy.

TL;DR: In this paper, a short overview of the production of unique high performance glass-ceramics using coal fly ash as a raw material is presented, and a detailed description of the methodologies for the synthesis of glass-cameramics from coal fly-ash and the principal crystal phases, corresponding property and possible usage of those materials are introduced.

TL;DR: In this paper, it was shown that 20 at% is the optimum doping level for good quality p-type SnO2:Al films suitable for transparent electronic devices and the possible mechanism behind the zig-zag variation in resistivity with respect to Al doping is discussed in detail.

TL;DR: In this article, a 6mm-thick SiCp/2009Al composite plate was successfully joined by friction stir welding (FSW) using an ultra-hard material tool to investigate the evolution of the microstructure and the strength in the nugget zone (NZ).

TL;DR: In this paper, the structural, mechanical and thermal properties of Yb3Al5O12 were investigated by a combination of first-principles calculations and chemical bond theory calculation.

TL;DR: In this paper, a SiC/SiC-MoSi2-ZrB2 double-layer ceramic coating was prepared on C/C composites by two-step pack cementation and the phase compositions and microstructures of as-prepared multilayer coating were characterized by X-ray diffraction and scanning electron microscopy.

TL;DR: In this article, a simple and viable method has been proposed where a small amount of metal powder with higher melting point is added to the ceramic preform such that the surface tension of the Mg melt and the liquid-solid interfacial tension could be reduced.

TL;DR: In this paper, a core-shell model was proposed to understand the structural heterogeneity in bulk metallic glass (BMG), which contains a solid-like matrix and liquid-like inclusions.

TL;DR: In this article, a method for preparing a graphene oxide/polyaniline (GO/PANI) composite electrode was developed to investigate the effect of GO doped in PANI.

TL;DR: In this article, a brief review of recent work in this topic is presented and the novel approaches to improving composite formability and mechanical properties will also be highlighted, however, the main purpose of this manuscript is not to offer a comprehensive review of all the BMG composites, but instead focuses will be placed on illustrating recently developed advanced bulk metallic glasses composites including Fe-based BMG composite with no metalloids, Al-based bMG composite reinforced by the TRIP (transformation-induced plasticity) effects.