x-ray diffraction
X ray diffraction (XRD)
... this process. We analyzed the kinetics of thermal transformation of Al-maghemites into Al-hematites and some of its mineralogical aspects. Synthetic substituted maghemites with different degrees of Al-substitution (0.0, ...
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Evaluation of stress-strain behavior of surface treated steels by X-ray diffraction
... 4 Figure 2 left presents a characteristic optical micrograph of the cross-section of the nitrided specimens. DIN 32 Cr Mo V 13 nitrided steel presents a white layer with a thickness of 18 μm, and a diffusion zone with ...
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X-ray diffraction pattern and relative crystallinity of irradiated arrowroot starch
... After cereals, tubers and roots are the major source of starch for food and industrial uses. Arrowroot refers to any plant of the genus Marantha, but the term is most commonly used to describe the easily digested starch ...
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Synthesis of hydroxyapatite and structural refinement by x-ray diffraction.
... SYNTHESIS OF HYDROXYAPATITE AND STRUCTURAL REFINEMENT BY X-RAY DIFFRACTION. A sample of hydroxyapatite was synthesized and its crystalline structure was analyzed by X-ray ...
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X ray diffraction analysis of IrO2/TiO2/CeO2 ceramic oxide films.
... raios X (DRX), microscopia eletrônica de varredura e transmissão (MEV e MET), espectroscopia fotoeletrônica de raios X (XPS) e espec- troscopia no infravermelho (IRS) mostrou que esses materiais são o ...
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Characterization and DC Conductivity of Novel CuO doped Polyvinyl Alcohol (PVA) Nano-composite Films
... by X- ray diffraction (XRD) analysis, Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDXS); which ...
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Braz. J. Phys. vol.34 número3B
... stable and irreversibly transforms to an orthorhombic structure above 460 o C. The structure of the latter was determined from studies on monocrystalline samples, whereas for the monoclinic variant there are no single ...
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Estudos estruturais de uma lectina presente em sementes de Lotus tetragonolobus
... 11.3 Crystallization and preliminary X-ray diffraction analysis of a new chitin-binding protein from Parkia platycephala seeds.. Página 91.[r] ...
126
O limite de aplicação da equação de Scherrer
... of X-ray diffraction, used for crystals with appreciable defects or of small size (Zachariasen, ...of X-ray diffraction should be applied ...a diffraction peak even in an ...
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Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
... The polycrystalline sample of Nb was obtained by electron-beam zone melting and was supplied in the form of swaged rod of 3 mm in diameter, by FAENQUIL/Lorena. Samples 50 mm long which had been chemically polished to 1 ...
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Braz. J. Phys. vol.39 número4
... routes and characterized by scanning electron microscopy, differential thermal analysis, thermogravimetric analysis and X-ray diffraction, whereas the superconducting properties by dc magnetization ...
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J. Braz. Chem. Soc. vol.24 número2
... in X-ray diffraction patterns of the sample obtained from sonochemical method could be an evidence of smaller particle ...the X-ray wavelength of 1.5418 Å, θ is the Bragg ...
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Mat. Res. vol.8 número2
... Spinel-type solid solutions were synthesized by the Pechini method and calcined between 500 and 900 °C for 4 hours and at 900 °C for 8 hours to produce ceramic pigments. The resulting powders were characterized by ...
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J. Braz. Chem. Soc. vol.15 número5
... Potassium hydrotris(2-mercaptothiazolyl)borate, KMt, (1) and potassium hydrotris(2- methimazole), KTm, (2), were prepared by reacting the appropriate amine thiol with KBH 4 . They were characterized by spectroscopic ...
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J. Braz. Chem. Soc. vol.13 número5
... 15 mL of DME, at -30 ºC and the resulting mixture was stirred for 20 h. The LiBr formed during the reaction was filtered off and the solvent evaporated under vacuum. The residue was purified by column chromatography ...
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J. Braz. Chem. Soc. vol.26 número10
... Mössbauer, X-ray diffraction (XRD), thermogravimetric analysis (TG/DTA), scanning electron microscope (SEM), elemental analysis CHN, Raman, potentiometric titration, saturation magnetization and ...
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Luminescence Properties of Ce3 +-Doped Terbium Aluminum Garnet Phosphor Prepared with Use of Nanostructured Reagents
... Aluminum oxide nanoparticles were obtained by gaseous-disperse synthesis and characterized by X-ray diffraction, differential thermal analysis and scan- ning electron microscopy..[r] ...
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Repositório Institucional UFC: The limit of application of the Scherrer equation
... of X-ray diffraction, which considers the dielectric constant of the crystal a three-dimensional and periodic complex quantity and uses Maxwell’s equations to describe the interactions of all beams ...
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Cerâmica vol.49 número312
... of SiO 2 , stable and adherent, that promotes the adherence of Al 2 O 3 present on the aluminum surface. Starting from the scanning electronic microscopy characterizations, the chemical analysis for energy dispersive ...
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Int. braz j urol. vol.33 número1
... Phyllanthus niruri (Pn) is a plant that has been shown to interfere in the growth and aggregation of calcium oxalate (CaOx) crystals. In the present study we evaluated the effect of Pn on the preformed calculus induced ...
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