In situ Observation of Lattice-Strain and Solid State Transformation in Low Temperature Transformation Weld Metal by Synchrotron X-rays

2014 ◽  
pp. 89-94
Author(s):  
Shuoyuan Zhang ◽  
Yu-ichi Komizo
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Weld Metal ◽  
Lattice Strain ◽  
In Situ Observation ◽  
X Rays ◽  
State Transformation ◽  
Solid State Transformation ◽  
Temperature Transformation

In Situ High-Energy X-Ray Diffraction Studies of Melting, Solidification and Solid-State Transformation of Ni3Sn

MRS Advances ◽  
2020 ◽  
Vol 5 (29-30) ◽  
pp. 1529-1535 ◽  
Author(s):  
Rijie Zhao ◽  
Jianrong Gao ◽  
Yang Ren
Keyword(s):  
Solid State ◽  
Elevated Temperatures ◽  
High Energy ◽  
Cubic Phase ◽  
X Ray Diffraction ◽  
State Transformation ◽  
Solid State Transformation ◽  
X Ray ◽  
Melting And Solidification

AbstractMelting, solidification and solid-state transformation of the intermetallic Ni3Sn compound were investigated in situ using synchrotron high-energy X-ray diffraction. It was observed that the compound undergoes a hexagonal to cubic transition before melting. In solidification, a disordered cubic phase crystallizes from the liquid at a large undercooling but it is reordered prior to bulk solidification. In melting and solidification, forced or natural flows are active bringing about significant changes of crystal orientations. These in situ observations provided insights into phase transformations of Ni3Sn at elevated temperatures and their roles in formation of metastable microstructure consisting of coarse grains and subgrains.

scholarly journals Rapid-Heating-Triggered in Situ Solid-State Transformation of Amorphous TiO2 Nanotubes into Well-Defined Anatase Nanocrystals

2018 ◽  
Vol 19 (2) ◽  
pp. 1086-1094 ◽  
Author(s):  
Zhonghui Gao ◽  
Ying Zhao ◽  
Haifeng Wang ◽  
Yun Wang ◽  
Lixue Jiang ◽  
...  
Keyword(s):  
Solid State ◽  
Tio2 Nanotubes ◽  
Rapid Heating ◽  
State Transformation ◽  
Solid State Transformation ◽  
Amorphous Tio2

Preparing Bi12SiO20 crystals at low temperature through nontopotactic solid-state transformation and improving its photocatalytic activity by etching

2015 ◽  
Vol 3 (14) ◽  
pp. 7413-7421 ◽  
Author(s):  
Qiaofeng Han ◽  
Juan Zhang ◽  
Xin Wang ◽  
Junwu Zhu
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Low Temperature ◽  
Visible Light ◽  
State Transformation ◽  
Solid State Transformation ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

The egg-tart shaped BiOCl hierarchitectures with efficient visible-light photocatalytic activity were prepared through etching of Bi12SiO20 obtained at low temperature.

Solid-state transformation of aqueous to organic electrolyte – Enhancing the operating voltage window of ‘in situ electrolyte’ supercapacitors

2020 ◽  
Vol 4 (5) ◽  
pp. 2438-2447
Author(s):  
Desirée Leistenschneider ◽  
Lars Henning Heß ◽  
Andrea Balducci ◽  
Lars Borchardt
Keyword(s):  
Solid State ◽  
Organic Electrolyte ◽  
Operating Voltage ◽  
State Transformation ◽  
Solid State Transformation ◽  
Organic Electrolytes ◽  
Waste Products ◽  
Supercapacitor Applications

Waste products during carbon synthesis are transformed into organic electrolytes for supercapacitor applications.

The NaAlSiO4 nepheline-carnegieite solid-state transformation

1994 ◽  
Vol 209 (2) ◽  
Author(s):  
H. Schneider ◽  
O. W. Flörke ◽  
R. Stoeck
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Single Crystals ◽  
Transformation Process ◽  
State Transformation ◽  
Solid State Transformation ◽  
X Ray ◽  
Thermally Activated ◽  
Transformation Mechanisms ◽  
Temperature Transformation

AbstractThe reconstructive high-temperature transformation of NaAlSiOX-ray precession patterns of single crystals heattreated between 1543 K and 1593 K yielded an oriented transformation of NaAlSiOThe oriental relationships between nepheline and carnegieite are similar to those observed in the high-temperature transformation of tridymite to cristobalite. However, the transformation mechanisms are believed to be different. Thermally activated Na and weakening of the tetrahedral Al–O-bonds produce quickly migrating non-bridging O-atoms which act as conversion nuclei, accelerating strongly the transformation process in comparison to SiO

scholarly journals Kaolinite-to-Chlorite Conversion from Si,Al-Rich Fluid-Origin Veins/Fe-Rich Carboniferous Shale Interaction

Minerals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 804
Author(s):  
Franck Bourdelle ◽  
Michel Dubois ◽  
Emily Lloret ◽  
Cyril Durand ◽  
Ahmed Addad ◽  
...  
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Intermediate Phase ◽  
Hydrothermal Systems ◽  
Small Scale ◽  
State Transformation ◽  
Solid State Transformation ◽  
The North ◽  
Reducing Conditions ◽  
Carboniferous Shale

The kaolinite-to-chlorite conversion is one of the chloritization processes that occurs in low temperature diagenetic and hydrothermal systems. The mechanism of this mineralogical transformation is still under discussion, since direct transformation, conversion via berthierine as intermediate phase or direct formation of berthierine/chlorite mix, either by dissolution-crystallization or by solid state transformation (or a combination of both), are all hypotheses put forward. In this context, each description of a kaolinite-to-chlorite conversion occurrence becomes an opportunity to shed new light and to renew this debate. Studying Carboniferous shale–crosscut by large quartz-kaolinite veins–from the mining basin of the North of France, we report therefore an uncommon kaolinite-Fe-rich chlorite assemblage. This assemblage appears as a chlorite fringe 20 µm wide along the interfaces between the shale and the quartz-kaolinite veins. All petrographical, mineralogical and chemical data suggest that the Fe-chlorite results from the interaction between the shale, providing the Fe,Mg supply, and the Si,Al-rich veins, leading to the chloritization of the kaolinite at a small scale via at least one dissolution-recrystallisation step. High-resolution observations highlight that neoformed Fe-rich chlorite contains some 7Å isochemical layers, as relict of berthierine. Therefore, we advance that the conversion takes place either through the precipitation of berthierine following by a second step involving solid state berthierine-chlorite conversion, or through the direct precipitation of a chlorite-rich/berthierine-poor mix driven by the Fe/(Fe + Mg) ratio, at low temperature and in reducing conditions. The comparison of our data with the recent literature allows to prefer the second hypothesis.

3DXRD Characterization and Modeling of Solid-State Transformation Processes

MRS Bulletin ◽  
2008 ◽  
Vol 33 (6) ◽  
pp. 621-629 ◽  
Author(s):  
D. Juul Jensen ◽  
S.E. Offerman ◽  
J. Sietsma
Keyword(s):  
Solid State ◽  
Geometric Modeling ◽  
Three Dimensional ◽  
Dynamics Modeling ◽  
X Ray Diffraction ◽  
State Transformation ◽  
Solid State Transformation ◽  
Molecular Dynamics Modeling

AbstractThree-dimensional x-ray diffraction (3DXRD) allows nondestructive characterization of grains, orientations, and stresses in bulk microstructures and, therefore, enables in situ studies of the structural dynamics during processing. The method is described briefly, and its potential for providing new data valuable for validation of various models of microstructural evolution is discussed. Examples of 3DXRD measurements related to recrystallization and to solid-state phase transformations in metals are described. 3DXRD measurements have led to new modeling activity predicting the evolution of metallic microstructures with much more detail than hitherto possible. Among these modeling activities are three-dimensional (3D) geometric modeling, 3D molecular dynamics modeling, 3D phase-field modeling, two-dimensional (2D) cellular automata, and 2D Monte Carlo simulations.

Solid-state Transformation of Achiral Crystals to a Chiral Crystal by Guest Release from Host–Guest Inclusion Crystals of Achiral Host Compound

2009 ◽  
Vol 38 (11) ◽  
pp. 1080-1081 ◽  
Author(s):  
Hironori Saito ◽  
Mitsuaki Suzuki ◽  
Hiroshi Miyamae ◽  
Naoto Hayashi ◽  
Keiji Kobayashi
Keyword(s):  
Solid State ◽  
State Transformation ◽  
Solid State Transformation ◽  
Host Compound
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