Phase transformation in two-dimensional crystalline silica under compressive loading

2017 ◽  
Vol 19 (12) ◽  
pp. 8478-8484 ◽  
Author(s):  
Jin Zhang
Keyword(s):  
Phase Transformation ◽  
Compressive Loading ◽  
Crystalline Silica ◽  
Two Dimensional

scholarly journals Phase transformation in two-dimensional covalent organic frameworks under compressive loading

2018 ◽  
Vol 20 (46) ◽  
pp. 29462-29471 ◽  
Author(s):  
Jin Zhang
Keyword(s):  
Phase Transformation ◽  
Material Properties ◽  
Compressive Loading ◽  
Two Dimensional ◽  
Covalent Organic Frameworks

We report a novel phase transformation in 2D COFs under compression, which greatly alters the material properties of 2D COFs.

Two-Dimensional Transient Heat Transfer Model for High-Temperature Laser-Scanning Confocal Microscopy

2021 ◽  
Author(s):  
Dasith Liyanage ◽  
Suk-Chun Moon ◽  
Ajith S. Jayasekare ◽  
Abheek Basu ◽  
Madeleine Du Toit ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Phase Transformation ◽  
High Temperature ◽  
Laser Scanning ◽  
Laser Scanning Confocal Microscopy ◽  
Transfer Model ◽  
Two Dimensional ◽  
Scanning Confocal Microscopy ◽  
Solid Liquid Interface ◽  
Solid Liquid

Abstract High-temperature laser-scanning confocal microscopy (HT-LSCM) has proven to be an excellent experimental technique through in-situ observations of high temperature phase transformation to study kinetics and morphology using thin disk steel specimens. A 1.0 kW halogen lamp, within the elliptical cavity of the HT-LSCM furnace radiates heat and imposes a non-linear temperature profile across the radius of the steel sample. This local temperature profile when exposed at the solid/liquid interface determines the kinetics of solidification and phase transformation morphology. A two-dimensional numerical heat transfer model for both isothermal and transient conditions is developed for a concentrically solidifying sample. The model can accommodate solid/liquid interface velocity as an input parameter under concentric solidification with cooling rates up to 100 K/min. The model is validated against a commercial finite element analysis software package, Strand7, and optimized with experimental data obtained under near-to equilibrium conditions. The validated model can then be used to define the temperature landscape under transient heat transfer conditions.

Can a three-dimensional composite really provide better mechanical performance compared to two-dimensional composite under compressive loading?

2018 ◽  
Vol 38 (2) ◽  
pp. 49-61 ◽  
Author(s):  
M Tarfaoui ◽  
M Nachtane
Keyword(s):  
Mechanical Performance ◽  
Split Hopkinson Pressure Bar ◽  
Compressive Loading ◽  
Three Dimensional ◽  
Woven Composites ◽  
Two Dimensional ◽  
Hopkinson Pressure Bar ◽  
Out Of Plane ◽  
Split Hopkinson ◽  
Pressure Bar

A series of split Hopkinson pressure bar tests on two-dimensional and three-dimensional woven composites were presented in order to obtain a reliable comparison between the two types of composites and the effect of the z-yarns along the third direction. These tests were done along different configurations: in-plane and out-of-plane compression test. For the three-dimensional woven composite, two different configurations were studied: compression responses along to the stitched direction and orthogonal to the stitched direction. It was found that three-dimensional woven composites exhibit an increase in strength for both: in-plane and out-of-plane tests.

Two-Dimensional Solvent-Mediated Phase Transformation in Lipid Membranes Induced by Sphingomyelinase

Langmuir ◽  
2011 ◽  
Vol 27 (16) ◽  
pp. 10050-10060 ◽  
Author(s):  
Ling Chao ◽  
Fei Chen ◽  
Klavs F. Jensen ◽  
T. Alan Hatton
Keyword(s):  
Phase Transformation ◽  
Lipid Membranes ◽  
Two Dimensional

Insight into the structure–property relationship of two-dimensional lead-free halide perovskite Cs3Bi2Br9 nanocrystals under pressure

2021 ◽  
Author(s):  
Ting Geng ◽  
Shuai Wei ◽  
Wenya Zhao ◽  
Zhiwei Ma ◽  
Ruijing Fu ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Band Gap ◽  
Lead Free ◽  
Two Dimensional ◽  
Structure Property ◽  
Property Relationship ◽  
Structure Property Relationship ◽  
Halide Perovskite ◽  
Relationship Of ◽  
Insight Into

Pressure-induced phase transformation and narrowed band gap of two-dimensional lead-free halide perovskite Cs3Bi2Br9 nanocrystals.

scholarly journals Phase Transformation Behavior of a Two‐Dimensional Zeolite

2019 ◽  
Vol 131 (30) ◽  
pp. 10336-10341
Author(s):  
Juna Bae ◽  
Magdalena O. Cichocka ◽  
Yi Zhang ◽  
Zoltán Bacsik ◽  
Sara Bals ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Two Dimensional ◽  
Transformation Behavior ◽  
Phase Transformation Behavior

Kinetics of the C49 TO C54 Phase Transformation in TiSi2 thin Films on Deep-Sub-Micron Lines

1995 ◽  
Vol 402 ◽  
Author(s):  
J. A. Kittl ◽  
D. A. Prinslow ◽  
P. P Apte ◽  
M. F. Pas
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Phase Transformation ◽  
Full Time ◽  
Two Dimensional ◽  
One Dimensional ◽  
Grain Sizes ◽  
Nucleation Sites ◽  
Dimensional Growth ◽  
Kinetics Of

AbstractThe kinetics of the TiSi2 C49 to C54 phase transformation in thin films on patterned deepsub- micron lines, were studied to obtain the full time, temperature and linewidth dependence of the fraction transformed during rapid thermal annealing. A Johnson-Mehl-Avrami kinetic analysis was performed, obtaining Avrami exponents of 0.8±0.2 for all sub-micron lines and 1. 9±0.2 for a 40 μm side square structure, indicating heterogeneous nucleation followed by one dimensional growth for the narrow lines, and two dimensional growth for the square structure. The activation energy, of 3.9 eV, was independent of linewidth in the sub-micron range. Transformation times increased dramatically for decreasing linewidth, as the linewidth approached the grain size of the starting C49 phase. A kinetic model based on the density of nucleation sites as a function of linewidth and C49 grain size is proposed and shown to fit the data, for samples with two different C49 grain sizes.

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