On the problem of criteria for phase transformations in molecular water clusters (hexamer and octamer examples)

2018 ◽  
Vol 59 (6) ◽  
2012 ◽  
Vol 2 (5) ◽  
pp. 56-66 ◽  
Author(s):  
A. Zubow ◽  
K. Zubow ◽  
V. A. Zubow

2010 ◽  
Vol 46 (13) ◽  
pp. 2307 ◽  
Author(s):  
Guozan Yuan ◽  
Chengfeng Zhu ◽  
Yan Liu ◽  
Yu Fang ◽  
Yong Cui

2019 ◽  
Vol 7 ◽  
pp. 71
Author(s):  
G. S. Anagnostatos ◽  
K. Viras ◽  
M. Soutzidou ◽  
P. Pissis

No abstract (available).


Author(s):  
K. V. Berezin ◽  
O. V. Kozlov ◽  
M. L. Chernavina ◽  
A. M. Lihter ◽  
V. V. Smirnov ◽  
...  

2021 ◽  
Vol 12 (2-2021) ◽  
pp. 125-128
Author(s):  
I. V. Kozerozhets ◽  
◽  
G. P. Panasyuk ◽  

The work is devoted to the development of the physicochemical foundations of the processes of obtaining powders of oxides and hydroxides, including aluminum, magnesium, calcium, and silicon with a given shape, size, impurity and phase composition, low thermal conductivity, etc., by methods of pyrolysis of a polymer matrix and hydrothermal treatment element-containing precursors, as well as the creation of a mechanism that allows describing the phase transformations of powders of oxides and hydroxides and reveals the role of water clusters with a low heat of vaporization in phase transformations.


Author(s):  
P. G. Kotula ◽  
D. D. Erickson ◽  
C. B. Carter

High-resolution field-emission-gun scanning electron microscopy (FESEM) has recently emerged as an extremely powerful method for characterizing the micro- or nanostructure of materials. The development of high efficiency backscattered-electron detectors has increased the resolution attainable with backscattered-electrons to almost that attainable with secondary-electrons. This increased resolution allows backscattered-electron imaging to be utilized to study materials once possible only by TEM. In addition to providing quantitative information, such as critical dimensions, SEM is more statistically representative. That is, the amount of material that can be sampled with SEM for a given measurement is many orders of magnitude greater than that with TEM.In the present work, a Hitachi S-900 FESEM (operating at 5kV) equipped with a high-resolution backscattered electron detector, has been used to study the α-Fe2O3 enhanced or seeded solid-state phase transformations of sol-gel alumina and solid-state reactions in the NiO/α-Al2O3 system. In both cases, a thin-film cross-section approach has been developed to facilitate the investigation. Specifically, the FESEM allows transformed- or reaction-layer thicknesses along interfaces that are millimeters in length to be measured with a resolution of better than 10nm.


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