scholarly journals Study of Near-Surface Local Structural Change on Thermal Behavior of Forsterite Precursor by XANES Spectroscopy.

2000 ◽  
Vol 49 (11) ◽  
pp. 1211-1216 ◽  
Author(s):  
Takushi MINAGI ◽  
Takeshi SHIONO ◽  
Hirofumi ARITANI ◽  
Toshihiko NISHIDA
Keyword(s):  
Structural Change ◽  
Thermal Behavior ◽  
Xanes Spectroscopy ◽  
Near Surface ◽  
Local Structural Change

Cr-Triggered Local Structural Change in Cr2Ge2Te6 Phase Change Material

2019 ◽  
Vol 11 (46) ◽  
pp. 43320-43329 ◽  
Author(s):  
Shogo Hatayama ◽  
Yi Shuang ◽  
Paul Fons ◽  
Yuta Saito ◽  
Alexander V. Kolobov ◽  
...  
Keyword(s):  
Structural Change ◽  
Phase Change ◽  
Phase Change Material ◽  
Change Material ◽  
Local Structural Change

Characterization of Thermal Behavior of Commercial NCR 18650B Batteries under Varying Cycling Conditions

MRS Advances ◽  
2017 ◽  
Vol 2 (54) ◽  
pp. 3329-3334 ◽  
Author(s):  
Bo Dong ◽  
Kazi Ahmed ◽  
Yige Li ◽  
Cengiz Sinan Ozkan ◽  
Mihrimah Ozkan
Keyword(s):  
Structural Change ◽  
Electrochemical Impedance Spectroscopy ◽  
Ionic Conductivity ◽  
Impedance Spectroscopy ◽  
Thermal Behavior ◽  
Electrochemical Impedance ◽  
Spectroscopy Technique ◽  
Impedance Spectroscopy Technique

ABSTRACTTo better understand the condition of commercial batteries used in Tesla EVs and stationary applications under real performing situations, this article focuses on tracking the temperature of commercial batteries during varying cycling conditions. We have found evidence of significant impact of cycling methods on batteries in ionic conductivity, inner impedance development, and structural change in both cathode and anode electrodes, which will be further analyzed by electrochemical impedance spectroscopy technique in the following research.

LOCAL STRUCTURAL CHANGE AND SUPERCONDUCTIVITY IN Y1-XPRXBA2CU3OY

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3307-3309 ◽  
Author(s):  
J. Yu ◽  
L. Chen ◽  
Y. Y. Xu ◽  
S. H. Han ◽  
H. Zhang
Keyword(s):  
Structural Change ◽  
Local Structure ◽  
Single Phase ◽  
Rietveld Method ◽  
Careful Analysis ◽  
Magnetization Measurement ◽  
X Ray Diffraction ◽  
X Ray ◽  
Local Structural Change ◽  
Active Block

To further understand the argument about the superconductivity in PrBa 2 Cu 3 O y , We try to change YBa 2 Cu 3 O y to PrBa 2 Cu 3 O y gradually, studying the detailed change during the change, and hope to find some clue to the argument. The single-phase samples of Y 1- x Pr x Ba 2 Cu 3 O y ( x = 0, 0.1, 0.2, 0.3, 0.5, 0.6, 0.8, 1.0, respectively) were synthesized and characterized by DC magnetization measurement and X-ray diffraction. The structure of the samples was refined by Rietveld method. After careful analysis, it is found that as the x increasing, Ba moves toward the Cu - O (1) plane, the bond length between Y - Ba , Y - Cu (2), and Ba - O (1), and Cu (1)-0(4) increase simultaneously. It demonstrates that as the Pr content increases, the distance between the active block and the carrier reservoir block becomes farer and farer, and the area of the carrier reservoir block increases. It is suggested that the doping of Pr to Y in YBa 2 Cu 3 O y changes some local structure and result in the suppression and vanishing of the superconductivity.

scholarly journals Investigations of Graphite Particle Interaction with Metallic Surfaces

Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 140
Author(s):  
Andreas Andris ◽  
Felix Fischer ◽  
Marion Herrmann ◽  
Wolfgang Lippmann ◽  
Antonio Hurtado
Keyword(s):  
Surface Layer ◽  
Structural Change ◽  
Particle Interaction ◽  
Test Facility ◽  
Primary Circuit ◽  
Material Surface ◽  
Alloy 800H ◽  
Gaseous Reaction ◽  
Near Surface ◽  
Graphite Particles

Previous studies on the safety of gas-cooled high-temperature reactors (HTR) have analyzed the corrosion and oxidation behavior of the primary circuit components under normal and accident conditions. Through the use of graphite components, graphite particles can be formed by mechanical and chemical means whose influence on the structural change of metal surfaces must be analyzed in a comprehensive manner. The dust resuspension and deposition in tank geometry (DRESDEN-TANK) test facility was set up to thermally anneal metallic samples (Alloy 800H, Inconel 617) loaded with graphite particles under typical HTR conditions (helium, 750 °C, 6 MPa) for the investigation of interactions over a long-term range. In addition to the carrying out of a description of the processes occurring on the material surface, the gaseous reaction products have been analyzed. The results show that the presence of graphite particles in the near-surface layer has a significant impact on corrosion processes due to thermally-induced interactions. In this case iron and chromium are degraded in the metallic alloys, which leads to a structural change in the near-surface layer. Furthermore, the graphite particles significantly influence the formation of the oxide layers on the alloys; for example, they influence the formation speed of the layer and the layer height. The originally deposited particles thus exhibit a chemically-altered composition and a different geometric shape.

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