Special Issue "In Situ Diffraction, Spectroscopy and Scattering"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: 31 January 2020.

Special Issue Editor

Prof. Miguel A. G. Aranda
E-Mail Website
Guest Editor
University of Málaga, Department of Inorganic Chemistry, Leon Tolstoi Street, 29010 Málaga, Spain. ALBA synchrotron collaborator, Carrer de la Lum, 2-26, 08290 Cerdanyola del Vallès, Barcelona, Spain
Interests: eco-cements; industrially-relevant materials (pigments, ceramics, etc.); synchrotron powder diffraction; high pressure diffraction; X-ray pair distribution function; coherent diffraction imaging; ptychographic X-ray computed nanotomography; microstructure; multiscale characterization

Special Issue Information

Dear Colleagues,

Material characterization and analysis using X-rays is a mature field with important applications in chemistry, physics, geology, engineering, environmental science, and materials science. A key step forward is the in situ and operando characterization of materials, which allows us to understand their properties and performances under the relevant conditions. These are rarely room temperature, room pressure, and ambient atmosphere composition!

Here we aim at gathering contributions in the area of materials characterization under relevant conditions by using the appropriated setups. The investigations can be based on a variety of probes: synchrotron radiation, laboratory X-rays, neutrons, and even electrons. Not only diffraction but scattering and X-ray absorption (and emission) techniques are at the forefront of in situ material analysis.

This Special Issue will deal with research including, but not restricted to:

  • Catalysis where gases/pressure/temperature/flow conditions need to be varied;
  • Gas storage, where pressure, temperature, and gasses are key players;
  • Metal and alloys where heating and cooling rates, and atmospheres can be changed;
  • iv) Cements, where pressure/temperature/water content have to be mimicked;
  • Energy-related materials where current/photons/temperature/compositions must be mastered.

This Special Issue also provides a forum for reports on technical developments (i.e., cells, devices, etc.) that allows the analysis of materials under in situ and operando.

Prof. Miguel A. G. Aranda
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (1 paper)

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Research

Open AccessArticle
Rietveld Quantitative Phase Analysis of Oil Well Cement: In Situ Hydration Study at 150 Bars and 150 °C
Materials 2019, 12(12), 1897; https://doi.org/10.3390/ma12121897 - 12 Jun 2019
Abstract
Oil and gas well cements are multimineral materials that hydrate under high pressure and temperature. Their overall reactivity at early ages is studied by a number of techniques including through the use of the consistometer. However, for a proper understanding of the performance [...] Read more.
Oil and gas well cements are multimineral materials that hydrate under high pressure and temperature. Their overall reactivity at early ages is studied by a number of techniques including through the use of the consistometer. However, for a proper understanding of the performance of these cements in the field, the reactivity of every component, in real-world conditions, must be analysed. To date, in situ high energy synchrotron powder diffraction studies of hydrating oil well cement pastes have been carried out, but the quality of the data was not appropriated for Rietveld quantitative phase analyses. Therefore, the phase reactivities were followed by the inspection of the evolution of non-overlapped diffraction peaks. Very recently, we have developed a new cell specially designed to rotate under high pressure and temperature. Here, this spinning capillary cell is used for in situ studies of the hydration of a commercial oil well cement paste at 150 bars and 150 °C. The powder diffraction data were analysed by the Rietveld method to quantitatively determine the reactivities of each component phase. The reaction degree of alite was 90% after 7 h, and that of belite was 42% at 14 h. These analyses are accurate, as the in situ measured crystalline portlandite content at the end of the experiment, 12.9 wt%, compares relatively well with the value determined ex situ by thermal analysis, i.e., 14.0 wt%. The crystalline calcium silicates forming at 150 bars and 150 °C are also discussed. Full article
(This article belongs to the Special Issue In Situ Diffraction, Spectroscopy and Scattering)
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