scholarly journals Decay of Metastable State with Account of Agglomeration and Relaxation Processes

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Victor Kurasov
Keyword(s):  
Metastable State ◽  
Metastable Phase ◽  
Theoretical Description ◽  
Relaxation Processes ◽  
Decay Kinetics ◽  
Kinetics Of

Theoretical description of the metastable phase decay kinetics in the presence of specific connections between the embryos of small sizes has been given. The theory of the decay kinetics in the presence of relaxation processes is constructed in analytical manner. The m-mers nucleation is investigated and the global kinetics of decay is also constructed in this case analytically.

Absorption Spectrum and Decay Kinetics of the Metastable State of Chlorophyll b

Nature ◽  
1959 ◽  
Vol 183 (4662) ◽  
pp. 661-662 ◽  
Author(s):  
STIG CLAESSON ◽  
LARS LINDQVIST ◽  
BERTIL HOLMSTRÖM
Keyword(s):  
Absorption Spectrum ◽  
Metastable State ◽  
Chlorophyll B ◽  
Decay Kinetics ◽  
Kinetics Of

scholarly journals Stable and Metastable Phase Equilibria Involving the Cu6Sn5 Intermetallic

2021 ◽  
Author(s):  
A. Leineweber ◽  
M. Löffler ◽  
S. Martin
Keyword(s):  
Phase Equilibria ◽  
Electron Backscatter Diffraction ◽  
Metastable Phase ◽  
Stable Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Heat Treated ◽  
Ordered Phases ◽  
Backscatter Diffraction ◽  
Kinetics Of

Abstract Cu6Sn5 intermetallic occurs in the form of differently ordered phases η, η′ and η′′. In solder joints, this intermetallic can undergo changes in composition and the state of order without or while interacting with excess Cu and excess Sn in the system, potentially giving rise to detrimental changes in the mechanical properties of the solder. In order to study such processes in fundamental detail and to get more detailed information about the metastable and stable phase equilibria, model alloys consisting of Cu3Sn + Cu6Sn5 as well as Cu6Sn5 + Sn-rich melt were heat treated. Powder x-ray diffraction and scanning electron microscopy supplemented by electron backscatter diffraction were used to investigate the structural and microstructural changes. It was shown that Sn-poor η can increase its Sn content by Cu3Sn precipitation at grain boundaries or by uptake of Sn from the Sn-rich melt. From the kinetics of the former process at 513 K and the grain size of the η phase, we obtained an interdiffusion coefficient in η of (3 ± 1) × 10−16 m2 s−1. Comparison of this value with literature data implies that this value reflects pure volume (inter)diffusion, while Cu6Sn5 growth at low temperature is typically strongly influenced by grain-boundary diffusion. These investigations also confirm that η′′ forming below a composition-dependent transus temperature gradually enriches in Sn content, confirming that Sn-poor η′′ is metastable against decomposition into Cu3Sn and more Sn-rich η or (at lower temperatures) η′. Graphic Abstract

Spectra and decay kinetics of trimethyldioxetane chemiluminescence

1975 ◽  
Vol 34 (2) ◽  
pp. 326-331 ◽  
Author(s):  
Irene Simo ◽  
Joachim Stauff
Keyword(s):  
Decay Kinetics ◽  
Kinetics Of

Picosecond decay kinetics of CdS luminescence studied by a streak camera

1979 ◽  
Vol 31 (4) ◽  
pp. 253-256 ◽  
Author(s):  
T. Kobayashi ◽  
Y. Segawa ◽  
S. Namba
Keyword(s):  
Streak Camera ◽  
Decay Kinetics ◽  
Kinetics Of

Decay Kinetics of Electron Emission from MgO Films in AC Plasma Display Panels

2008 ◽  
Vol 1 ◽  
pp. 091203 ◽  
Author(s):  
Takeru Okada ◽  
Takashi Furutani ◽  
Toshihiro Yoshioka
Keyword(s):  
Electron Emission ◽  
Decay Kinetics ◽  
Plasma Display Panels ◽  
Plasma Display ◽  
Kinetics Of
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