Influence of Temperature on X-Ray Diffraction Analysis of ZrO2 Oxide Layers Formed on Zirconium Based Alloys Using a Synchrotron Radiation

2002 ◽  
Vol 404-407 ◽  
pp. 803-808 ◽  
Author(s):  
Jean Luc Béchade ◽  
Rénald Brenner ◽  
Philippe Goudeau ◽  
Marc Gailhanou
Keyword(s):  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
Oxide Layers ◽  
Influence Of Temperature ◽  
X Ray ◽  
Influence Of Temperature On

X-Ray Diffraction Analysis of Oxide Layers of Zr-Based Alloys

2007 ◽  
Vol 567-568 ◽  
pp. 237-240
Author(s):  
Galina Gosmanová ◽  
Ivo Kraus ◽  
Michal Kolega ◽  
Věra Vrtílková
Keyword(s):  
Residual Stresses ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
Transient Conditions ◽  
Oxide Layers ◽  
X Ray ◽  
Corrosion Kinetics ◽  
Short Time ◽  
Kinetics Of ◽  
Tubular Specimens

The results of X-ray diffraction analysis of macroscopic stresses σ and crystallite size D in oxide layers are presented in this contribution. The oxide layers were formed on tubular specimens of Zircaloy 4 and Zr1Nb alloys which were simultaneously oxidized for various times under temperature transient conditions (oxidation in water at 360 °C with a short-time shock in steam at 500 °C). A qualitative relation was outlined between the residual stresses in oxide layers and corrosion kinetics of the alloys under investigation.

Hydroxyapatite Precursor Phases Identification by X-Ray Diffraction Using Synchrotron Radiation

2007 ◽  
Vol 330-332 ◽  
pp. 115-118 ◽  
Author(s):  
Silvia R. A. Santos ◽  
Antonella M. Rossi ◽  
Marcelo Henrique Prado da Silva
Keyword(s):  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
Intermediate Phase ◽  
Octacalcium Phosphate ◽  
Alkali Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Low Intensity ◽  
Synchrotron Light ◽  
Precursor Phases

The present study presents the relevance of X-ray diffraction analysis using synchrotron light in the identification of phases with low intensity peaks. Niobium sheets were coated with monetite and then converted to hydroxyapatite in an alkali solution. Octacalcium phosphate was identified as an intermediate phase in the conversion monetite-hydroxyapatite.

Synchrotron radiation X-ray diffraction analysis for Bi-based oxide superconducting wire

2010 ◽  
Vol 1 (SRMS-7) ◽  
Author(s):  
S. Uemura ◽  
J. Iihara ◽  
Y. Saito ◽  
K. Yamaguchi ◽  
J. Matsumoto ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
Crystal Orientation ◽  
Power Transmission ◽  
Process Conditions ◽  
X Ray Diffraction ◽  
Cooling Process ◽  
X Ray ◽  
Superconducting Wire

The Bi-based oxide superconducting wire is one of the most promising materials for practical uses such as electric power transmission, electromagnets and so on. For the higher performances required in these applications, it is necessary to increase the critical current (Ic). We have carried out synchrotron radiation X-ray diffraction analysis to improve our manufacturing processes and thus to achieve higher Ic. We have performed in situ X-ray diffraction measurements during the sintering and cooling processes, and observed the decrease of Bi-2223(=(Bi,Pb)2Sr2Ca2Cu3Ox) phase during the cooling process. We have also evaluated the distribution of the crystal orientation in whole wire thickness, by measuring the rocking curves. We have observed that the distribution of the crystal orientation is improved by a refinement of the process conditions.

Synchrotron radiation in situ X-ray absorption fine structure and in situ X-ray diffraction analysis of a high-performance cobalt catalyst towards the oxygen reduction reaction

2017 ◽  
Vol 19 (45) ◽  
pp. 30749-30755
Author(s):  
Haiying Qin ◽  
Longxia Lin ◽  
Junkang Jia ◽  
Huangliang Ni ◽  
Yan He ◽  
...  
Keyword(s):  
Fine Structure ◽  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
High Performance ◽  
Cobalt Catalyst ◽  
Reduction Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
X Ray Absorption

The evolution of metallic Co to Co(OH)2 and then to CoOOH during the ORR was revealed by in situ XRD combined with in situ XAFS tests.

scholarly journals Microstructure and Tribological Properties of Self-Lubricating FeS Coating Prepared by Chemical Bath Deposition Coating Technique

2019 ◽  
Vol 9 (20) ◽  
pp. 4422 ◽  
Author(s):  
Jianjun Hu ◽  
Chuan He ◽  
Xian Yang ◽  
Hui Li ◽  
Hongbin Xu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Chemical Bath Deposition ◽  
Tribological Properties ◽  
Energy Dispersive Spectrometry ◽  
X Ray Diffraction ◽  
Influence Of Temperature ◽  
X Ray ◽  
Coating Technique ◽  
Influence Of Temperature On ◽  
Scanning Electron

The FeS solid lubricating coatings were prepared on the AISI 5140 steel by chemical bath deposition (CBD) coating technique at various temperatures from 30 to 90 °C. The influence of temperature on microstructure, microcracks, and tribological properties was characterized and studied by X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive spectrometry (EDS). The results show that the coating mainly consists of FexSy (FeS, FeS2, and Fe1−xS), and has a chrysanthemum-shaped (CS) morphology composed of the FeS crystal petals. The CS particles nucleate at about 30 °C, rapidly grow and reach a peak thickness at about 50–70 °C, and finally disappear and are replaced by disordered thick petals at 90 °C. The wear resistance of the steel was improved obviously after introducing of FeS coatings, owing to that the coatings can provide better lubrication and improve the wear resistance.

Study of the Influence of Temperature on the Optical and Structural Properties of Dolomite

2020 ◽  
Vol 74 (10) ◽  
pp. 1280-1286
Author(s):  
Lucas Train Loureço ◽  
Celso de Araujo Duarte ◽  
Dietmar William Foryta ◽  
Bruno Guimarães Titon ◽  
Eleonora Maria Gouvêa Vasconcellos
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Thermal Treatment ◽  
X Ray Diffraction ◽  
Electron Dispersive Spectroscopy ◽  
Influence Of Temperature ◽  
X Ray ◽  
Different Temperatures ◽  
Influence Of Temperature On ◽  
Scanning Electron

The present work reports the results of structural and optical investigations in samples of natural dolomite, subjected to thermal treatment at different temperatures (500 ℃ to 700 ℃) and times (one up to three hours). The motivation is the evaluation of the changes that may occur in carbonaceous asteroids and meteorites, respectively, subjected to the action of the solar radiation and heated during the fall in the atmosphere. We carried out scanning electron microscopy, electron dispersive spectroscopy, X-ray diffraction, optical reflectance and photoluminescence measurements

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