New Insights on the Role of Chloride During the Onset of Local Corrosion: TEM, APT, Surface Energy, and Morphological Instability

CORROSION ◽  
10.5006/2991 ◽  
2019 ◽  
Vol 75 (6) ◽  
pp. 616-627 ◽  
Author(s):  
Xiao-xiang Yu ◽  
Ahmet Gulec ◽  
Katie Lutton Cwalina ◽  
John R. Scully ◽  
Laurence D. Marks
Keyword(s):  
Surface Energy ◽  
Local Corrosion ◽  
Morphological Instability

scholarly journals Dynamics of Monolayer Growth in Vapor–Liquid–Solid GaAs Nanowires Based on Surface Energy Minimization

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1681
Author(s):  
Hadi Hijazi ◽  
Vladimir G. Dubrovskii
Keyword(s):  
Surface Energy ◽  
Continuous Process ◽  
Vapor Liquid Solid ◽  
Gaas Nanowires ◽  
Monolayer Growth ◽  
Surface Energetics ◽  
Monolayer Expansion ◽  
Vapor Liquid Solid Growth ◽  
Vapor Liquid

The vapor–liquid–solid growth of III-V nanowires proceeds via the mononuclear regime, where only one island nucleates in each nanowire monolayer. The expansion of the monolayer is governed by the surface energetics depending on the monolayer size. Here, we study theoretically the role of surface energy in determining the monolayer morphology at a given coverage. The optimal monolayer configuration is obtained by minimizing the surface energy at different coverages for a set of energetic constants relevant for GaAs nanowires. In contrast to what has been assumed so far in the growth modeling of III-V nanowires, we find that the monolayer expansion may not be a continuous process. Rather, some portions of the already formed monolayer may dissolve on one of its sides, with simultaneous growth proceeding on the other side. These results are important for fundamental understanding of vapor–liquid–solid growth at the atomic level and have potential impacts on the statistics within the nanowire ensembles, crystal phase, and doping properties of III-V nanowires.

Preferred Orientations for Sol-Gel Derived Plzt Thin Layers

1993 ◽  
Vol 310 ◽  
Author(s):  
Toshihiko Tani ◽  
Zhengkui Xu ◽  
David A. Payne
Keyword(s):  
Heat Treatment ◽  
Surface Energy ◽  
Sol Gel ◽  
Nucleation And Growth ◽  
Thin Layers ◽  
Energy Conditions ◽  
Chemical Characteristics ◽  
Interfacial Chemistry ◽  
Si Substrates

AbstractPLZT thin layers were deposited onto various substrates by sol-gel methods, and crystallized under different conditions and substrate treatments. Relationships are given for the chemical characteristics of the substrate's surface and the preferred orientations which develop on heat treatment. A preferred (111) orientation always developed for perovskite crystallized on Pt layers which contained Ti on the surface. This was attributed to the formation of Pt3Ti and the role of heteroepitaxial nucleation and growth sites. In addition, a preferred (100) orientation was also obtained on unannealed Pt/Ti/SiO2/Si substrates which were free of Ti on the surface. This was attributed to self-textured growth with flat faces striving for minimum surface energy conditions. The results are discussed in terms of the importance of interfacial chemistry on the control of texture for crystallization of PLZT thin layers on coated substrates.

Role of surface energy in the heating mechanism of high explosives (HE) under shock effects

1982 ◽  
Vol 17 (5) ◽  
pp. 581-583
Author(s):  
E. G. Baranov ◽  
O. N. Oberemok ◽  
E. A. Semenyuk
Keyword(s):  
Surface Energy ◽  
High Explosives ◽  
Heating Mechanism

The Role of Nonmetallic Inclusions in Accelerating the Local Corrosion of Metal Products Made of Plain-Carbon and Low-Alloy Steels

Metallurgist ◽  
2005 ◽  
Vol 49 (3-4) ◽  
pp. 124-130 ◽  
Author(s):  
I. G. Rodionova ◽  
O. N. Baklanova ◽  
G. A. Filippov ◽  
I. I. Reformatskaya ◽  
A. N. Podobaev ◽  
...  
Keyword(s):  
Nonmetallic Inclusions ◽  
Local Corrosion ◽  
Low Alloy Steels ◽  
Alloy Steels ◽  
Metal Products

Phase Stability of Rare-Earth Based Mixed Oxides in Nano-Regime: Role of Synthesis

2010 ◽  
Vol 653 ◽  
pp. 131-152
Author(s):  
Rakesh Shukla ◽  
A.K. Tyagi
Keyword(s):  
Rare Earth ◽  
Surface Energy ◽  
Mixed Oxides ◽  
Metastable Phase ◽  
Chemical Route ◽  
Phase Stabilization ◽  
Metastable Compounds ◽  
Enhanced Stability ◽  
Soft Chemical Route

Synthesis plays an important role in the phase stabilization of unusual compounds. Of late, preparation of metastable compounds has gained a tremendous momentum due to unusual properties exhibited by them. In this article, we will discuss how by mere change in certain parameters of the reaction a metastable phase can be isolated using a soft chemical route. Surface energy induced stabilization are also observed wherein enhanced stability of the mixed oxides are observed in the nano-regime of the compound.

Role of surface energy in the initial sintering period

1969 ◽  
Vol 8 (11) ◽  
pp. 882-885
Author(s):  
P. S. Kislyi ◽  
M. A. Kuzenkova
Keyword(s):  
Surface Energy
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