scholarly journals In situ synchrotron radiation monitoring of phase transitions during microwave heating of Al–Cu–Fe alloys

2008 ◽  
Vol 23 (1) ◽  
pp. 170-175 ◽  
Author(s):  
Sébastien Vaucher ◽  
Radu Nicula ◽  
José-Manuel Català-Civera ◽  
Bernd Schmitt ◽  
Bruce Patterson
Keyword(s):  
Phase Transitions ◽  
Synchrotron Radiation ◽  
Microwave Heating ◽  
Nanocrystalline Alloy ◽  
Time Resolved ◽  
Microwave Exposure ◽  
Synchrotron Radiation Diffraction ◽  
Before And After ◽  
Fe Alloys

The effect of rapid microwave heating has so far been evaluated mainly by comparing the state of materials before and after microwave exposure. Yet, further progress critically depends on the ability to follow the evolution of materials during ultrafast heating in real time. We describe the first in situ time-resolved monitoring of solid-state phase transitions during microwave heating of metallic powders using wide-angle synchrotron radiation diffraction. Single-phase Al–Cu–Fe quasicrystal powders were obtained by microwave heating of nanocrystalline alloy precursors at 650 °C in <20 s.

Phase transitions in disordered lead iron niobate: X-ray and synchrotron radiation diffraction experiments

1997 ◽  
Vol 102 (5) ◽  
pp. 347-352 ◽  
Author(s):  
Vincent Bonny ◽  
Michel Bonin ◽  
Philippe Sciau ◽  
Kurt J. Schenk ◽  
Gervais Chapuis
Keyword(s):  
Phase Transitions ◽  
Synchrotron Radiation ◽  
X Ray ◽  
Synchrotron Radiation Diffraction ◽  
Iron Niobate

scholarly journals Phase Formation during Solidification of Mg-Nd-Zn Alloys: An In Situ Synchrotron Radiation Diffraction Study

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1637 ◽  
Author(s):  
Domonkos Tolnai ◽  
Tungky Subroto ◽  
Serge Gavras ◽  
Ricardo Buzolin ◽  
Andreas Stark ◽  
...  
Keyword(s):  
Rare Earth ◽  
Synchrotron Radiation ◽  
Diffraction Study ◽  
Phase Formation ◽  
Theoretical Calculations ◽  
Alloy System ◽  
Zn Addition ◽  
Synchrotron Radiation Diffraction ◽  
Zn Alloys

Mg-4Nd base alloys with Zn additions of 3, 5 and 8 wt % were investigated with in situ synchrotron radiation diffraction during solidification. This method enabled the investigation of phase formation and transformation in the alloys. The diffraction results were supported with TEM observations on the as-solidified samples. The results show the effect of increased Zn addition on stabilizing the Mg3RE phase (RE—rare earth). The experimental results agree only partially with the theoretical calculations indicating the need to improve the existing thermodynamic database on the alloy system.

A furnace for in situ synchrotron Laue diffraction and its application to studies of solid-state phase transformations

1990 ◽  
Vol 23 (6) ◽  
pp. 545-549 ◽  
Author(s):  
H. L. Bhat ◽  
S. M. Clark ◽  
A. El Korashy ◽  
K. J. Roberts
Keyword(s):  
Experimental Data ◽  
Thermal Stability ◽  
Phase Transitions ◽  
Solid State ◽  
Synchrotron Radiation ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
Laue Diffraction ◽  
Thermal Stability Of

The design of a new microfurnace for use for Laue diffraction studies of solid-state transformations is described. The furnace operates in the temperature range 298–573 K with a thermal stability of about ± 0.1 K. The potential of the synchrotron-radiation Laue diffraction technique for studies of structural phase transitions is demonstrated. Experimental data on phase transitions in caesium periodate, potassium tetrachlorozincate and pentaerythritol are presented.

scholarly journals Structural elucidation of the degradation mechanism of nickel-rich layered cathodes during high-voltage cycling

2020 ◽  
Vol 56 (36) ◽  
pp. 4886-4889 ◽  
Author(s):  
Jing Lai ◽  
Jun Zhang ◽  
Zuowei Li ◽  
Yao Xiao ◽  
Weibo Hua ◽  
...  
Keyword(s):  
High Resolution ◽  
Synchrotron Radiation ◽  
High Voltage ◽  
Degradation Mechanism ◽  
Structural Elucidation ◽  
Synchrotron Radiation Diffraction ◽  
Voltage Region ◽  
High Voltage Region ◽  
Layered Cathodes

A splitting of two O3 phases, rather than the often observed O1 phases in the conventional LiCoO2 electrode, was discovered in the LiNi0.85Co0.10Mn0.05O2 at high-voltage region (>4.6 V) by in situ high-resolution synchrotron radiation diffraction.

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