Showing papers in "Materials Characterization in 2010"

TL;DR: X-ray microtomography as mentioned in this paper is a technique to characterize material microstructure in 3D at a micron level spatial resolution using a high flux, monochromatic X-ray beam.

TL;DR: In this paper, the pore size distribution in pervious concretes is modeled using a Weibull probability distribution function and pore connectivity factor is used to predict the permeability of pervious concrete.

TL;DR: In this paper, a modified titration (Boehm's) process was used to quantify functional groups formed on the surface of oxidized multiwalled carbon nanotubes (MWCNTs).

TL;DR: In this paper, a green chemistry approach for the biological synthesis of gold nanoparticles by using the leaf extract of Coleus amboinicus Lour was reported. And the nanoparticles were structurally characterized by UV-Vis spectroscopy, XRD, TEM and SAED analyses.

TL;DR: In this article, a simple co-precipitation method was used to obtain cobalt oxide nanocrystals of size 10-15nm and the structural investigations have been performed with X-ray diffraction and Transmission Electron Microscopy.

TL;DR: The use of LD converter steel slags (coming from Linz-Donawitz steelmaking process) as aggregates in road construction can lead to dimensional damage due to a macroscopic swelling that is the consequence of chemical reactions as mentioned in this paper.

TL;DR: In this article, slaked lime (Ca(OH)2) nanoparticles were exposed at 33% and 75% relative humidity (RH) to consolidate dolostone samples used in historical buildings.

TL;DR: In this article, the hot working characteristics of delta phase in the delta-processed Inconel 718 alloy during isothermal compression deformation attemperature of 950 degrees C and strain rate of 0.005 s(-1), were studied by using optical microscope, scanning electron microscope and quantitative X-ray diffraction technique.

TL;DR: In this paper, a characterization of functionally graded composites based on 356 cast and 2124 wrought aluminum alloys reinforced with SiC particles of 23 μm average particle size processed by liquid metal stir casting followed by horizontal centrifugal casting is presented.

TL;DR: In this article, a comparative experimental study was conducted to compare the mechanical properties, solidification thermal parameters and microstructure characteristics of a hypoeutectic Sn-4-wt.% Zn, a hypereutective Sn-12-towards-Zn, and a needle-like Zn-rich Sn-9-to-needle-like alloy with respect to a water-cooled vertical upward unidirectional solidification system.

TL;DR: In this paper, the susceptibility of pre-weld heat treated laser beam welded IN 738 superalloy to heat affected zone (HAZ) cracking was studied, and the authors found that a pre-Weld heat treatment that produced the minimal grain boundary liquation resulted in a higher level of cracking compared to those with more intergranular liquation.

TL;DR: In this article, electron backscatter diffraction (EBSD) was applied to the deformation and damage evaluation of austenitic stainless steels strained by tension or compression at room temperature and also tested in creep at high temperature.

TL;DR: In this article, plates of stainless steel (grade 410) were joined to copper ones through a diffusion bonding process using a nickel interlayer at a temperature range of 800-950°C.

TL;DR: In this paper, a novel synthesis of hydrophilic nano-sized Mn3O4, a bivalent oxide, for which a precise characterization is necessary and for which the determination of the valency proves to be essential.

TL;DR: In this article, the interfacial characteristics of resistance spot welded steel-aluminum alloy joint were investigated using electron microscopy, and it was shown that reaction product FeAl3 is generated in the peripheral region of the weld while a reaction layer consisting of Fe2Al5 adjacent to steel and FeAl 3 adjacent to aluminum alloy forms in the central region.

TL;DR: In this paper, the suitability of Talcher coal fly ash for stowing in the nearby underground coal mines based on their physico-chemical and mineralogical analysis was examined and the physical properties such as bulk density, specific gravity, particle size distribution, porosity, permeability and water holding capacity etc.

TL;DR: In this paper, commercially pure titanium (CP Ti) samples were oxidized thermally at three different temperatures (500, 650 and 800 °C) for 24 hours and evaluation of their morphological and structural characteristics, microhardness and corrosion resistance in Ringer's solution was done.

TL;DR: In this paper, anodic aluminium oxide (AAO) templates with "honeycomb" geometry were presented, i.e. hexagonally ordered circular pores, and the structures were extensively studied and characterized by EPMA coupled with FEG-SEM and fEG-TEM coupled with EDX at meso and nanoscopic scales.

TL;DR: The microstructure and texture evolution of low-stacking fault energy high-manganese austenitic steel during tensile testing at room temperature was studied by means of interrupted tests.

TL;DR: In this paper, solid-state diffusion of Cu into the Ti alloy and Al7075 alloy followed by eutectic formation and isothermal solidification along the Cu/Al7075 interface was carried out at 500°C using 22μm thick Cu interlayers for various bonding times.

TL;DR: In this article, a quantitative characterization of changes in the alignment and in the dimensions of the cementite phase during wire drawing has been given, with the average thickness of the cements decreasing from 19 nm to 2 nm in correspondence with the reduction in wire diameter.

TL;DR: In this article, a nanocomposite made of AZ91 magnesium alloy as the matrix and fluorapatite nano particles as reinforcement was made via a blending-pressing-sintering method.

TL;DR: In this paper, an attempt to use differential thermal analysis to study anisothermal precipitation of both the stable delta and the metastable gamma-second phases during cooling of alloy Inconel 718 was made.

TL;DR: In this paper, the effect of annealing temperature on the luminescence characteristics of a well-aligned ZnO nanorod array was investigated and the photoluminescence properties showed a general enhancing tendency.

TL;DR: The microstructure of acicular ferrite and its formation for the grain refinement of coarse-grained region of heat-affected zone of high strength low-alloy bainite steels were studied using three-dimensional reconstruction technique.

TL;DR: In this paper, a simple equation predicting the LAAI value based on each rock property was suggested, which was found to be significant in estimating the LAI values of rocks, such as uniaxial compressive strength, point load index, and indirect tensile strength.

TL;DR: In this article, the phase transformation in the aluminide layer during diffusion at 750 deg. C in static air was analyzed by Electron Backscatter Diffraction, and the results showed that the as-coated specimen consisted of an outer Al-Si eutectic topcoat and the inner Fe-Al-Si and FeAl intermetallic layers.

TL;DR: In this paper, a multilayer coating, with electroless Ni coating as bottom layer and electrodeposited Ni-TiO2 composite coating as top layer, was successfully prepared on AZ91D magnesium alloy by a combination of electroless and electro-deposition techniques.

TL;DR: In this paper, a microstructural characterization of the powder-metallurgy high-speed-steel S390 Microclean was performed based on an elemental distribution of the carbide phase as well as crystallographic analyses.

TL;DR: In this paper, the authors deal with the immobilization of jarosite waste released from the zinc industry and convert it into a value added product using coal combustion residues (CCRs) through solidification/stabilization (s/s) and sintering process.