Results 21 to 30 of about 33,137,902 (193)

Preparation and characterization of alkali-activated white belite cements

Materiales de Construccion, 2009
Activated white cement clinkers with a theoretical 60% (wt) belite (dicalcium silicate) content were prepared at a temperature 100 ºC lower than used to manufacture conventional white Portland cement clinkers.
K. Morsli, Ángeles G. de la Torre, Antonio J. M. Cuberos, Mohammed Zahir, Miguel A. G. Aranda   +4 more
doaj   +1 more source

The Role of Base Solvent Variant to Structure and Crystal Size Titanium Dioxide (TiO₂) by Hydrothermal Method

Indonesian Journal of Chemistry, 2017
Photoactivity of titanium dioxide (TiO2) can be improved by turning it into nanoparticles. Synthesis of TiO2 nanoparticles can be done by using hydrothermal method.
Mohammad Rofik Usman, Atiek Rostika Noviyanti, Diana Rakhmawaty Eddy   +2 more
doaj   +1 more source

Vaporization and Poor Wettability as the Main Challenges in Fabrication of TiB2-Cu Cermets Studied by SPS

Metals, 2014
TiB2-Cu cermets with various volume fractions of copper (from 3 to 30 vol. %) were produced via liquid phase sintering at the temperature range 1100–1200 °C in vacuum using spark plasma sintering (SPS) technique.
Marta Ziemnicka-Sylwester
doaj   +1 more source

Structural Characterization of the Hot-rolled Ti-25Ta-xZr Alloys by Rietveld Method

Materials Research, 2023
This paper aims to analyze the structure of the Ti-25Ta-xZr system alloys (x = 0, 10, 20, 30, and 40% wt.) after melting and hot-rolling by Rietveld's technique.
Pedro Akira Bazaglia Kuroda, Carlos Roberto Grandini, Conrado Ramos Moreira Afonso   +2 more
doaj   +1 more source

Determination of metallization degree of pre-reduced chromite with image and rietveld analysis [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2020
Metallization degree of pre-reduced chromite was determined using two methods. The chromite samples were reduced in the solid state by methane-hydrogen gas mixtures.
Leino T., Taskinen P., Eric R.H.
doaj   +1 more source

Rietveld analysis and mechanical properties of in situ formed La-β-Al2O3/Al2O3 composites prepared by sol-gel method

Ceramics International, 2022
In this work, the crystal evolution of α -Al 2 O 3 composites reinforced with LBA platelets were monitored by XRD Rietveld. In addition, the mechanical properties of totally densified specimens were researched by Vickers and Knoop indentations.
Pedro Rivero-Antúnez, V. Morales‐Flórez, F. Cumbrera, L. Esquivias   +3 more
semanticscholar   +1 more source

Efficient Pb (II) removal from wastewater by TEG coated Fe3O4 ferrofluid [PDF]

Journal of Water and Environmental Nanotechnology, 2021
Tri-ethylene glycol (TEG) coated Fe3O4 nanoparticles ferrofluid were used for Pb (II) removal from simulated wastewater. The samples were synthesized using a modified co-precipitation method.
Sajjad Lotfi, Bagher Aslibeiki, Mahmoud Zarei   +2 more
doaj   +1 more source

Mineralogical characterization of a highly-weathered soil by the Rietveld Method Caracterização mineralógica de um solo altamente intemperizado pelo Método de Rietveld

Scientia Agricola, 2010
The mineralogical characterization through mineral quantification of Brazilian soils by X-ray diffraction data using the Rietveld Method is not common.
André Maurício Brinatti, Yvonne Primerano Mascarenhas, Vitor Paulo Pereira, Carmen Silvia de Moya Partiti, Álvaro Macedo   +4 more
doaj   +1 more source

Influência do método de síntese na obtenção de pós de Na2TiSiO5 Influence of the synthesis method to obtain Na2TiSiO5 powders

Cerâmica, 2005
Este trabalho apresenta um estudo sistemático sobre a síntese e caracterização de pós de Na2TiSiO5. Foram estudadas as propriedades estruturais e morfológicas dos pós por intermédio de difração de raios X, espectroscopia Raman e microscopia eletrônica de
V. C. Albarici, M. T. Escote, E. Orhan, R. C. Lima, J. A. Varela, E. Longo, E. R. Leite   +6 more
doaj   +1 more source

The Rietveld Method ? A Historical Perspective [PDF]

Australian Journal of Physics, 1988
differences between observed and calculated values was already well established in crystallography. From there it was, in retrospect, only a small step to refrain from using the integrated intensities as observed values but to use the actual measured profile intensities obtained by step scanning the powder diagram.
openaire   +1 more source