Metastable Phase Equilibria in the Aqueous Ternary Systems KCl + MgCl2+ H2O and KCl + RbCl + H2O at 298.15 K

2011 ◽  
Vol 56 (8) ◽  
pp. 3384-3391 ◽  
Author(s):  
Xudong Yu ◽  
Ying Zeng ◽  
Huixin Yao ◽  
Jianyuan Yang
Keyword(s):  
Phase Equilibria ◽  
Metastable Phase ◽  
Ternary Systems

Metastable Phase Equilibria in the Aqueous Ternary Systems K2B4O7–K2SO4–H2O and K2B4O7–KCl–H2O at 273 K

2017 ◽  
Vol 50 (8) ◽  
pp. 595-600
Author(s):  
Tingting Zhang ◽  
Lei Yang ◽  
Wenyao Zhang ◽  
Shihua Sang ◽  
Ruizhi Cui
Keyword(s):  
Phase Equilibria ◽  
Metastable Phase ◽  
Ternary Systems

scholarly journals Studies on Metastable Phase Equilibria in the Ternary Systems KCl–MgCl2–H2O and MgB4O7–MgCl2–H2O at 273 K

2019 ◽  
Vol 52 (10) ◽  
pp. 783-788
Author(s):  
Jingshu Xu ◽  
Yanyu Song ◽  
Yunyun Gao ◽  
Shihua Sang ◽  
Xiaofeng He
Keyword(s):  
Phase Equilibria ◽  
Metastable Phase ◽  
Ternary Systems

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

Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems

2012 ◽  
Vol 103 (10) ◽  
pp. 1179-1187 ◽  
Author(s):  
Guanglong Xu ◽  
Yu-Wen Cui ◽  
Houjun Fei ◽  
Ligang Zhang ◽  
Feng Zheng ◽  
...  
Keyword(s):  
Phase Equilibria ◽  
Ternary Systems

Thermodynamics Phase Equilibria of the Aqueous Ternary Systems LiCl + KCl (MgCl2) + H2O at 348 K

2015 ◽  
Vol 60 (3) ◽  
pp. 574-579 ◽  
Author(s):  
Pengtao Mu ◽  
Qi Tan ◽  
Xudong Yu ◽  
Qiang Li ◽  
Ying Zeng
Keyword(s):  
Phase Equilibria ◽  
Ternary Systems

Metastable phase equilibria in the lead-tin alloy system: Part II. Thermodynamic modeling

1989 ◽  
Vol 20 (5) ◽  
pp. 795-803 ◽  
Author(s):  
H. J. Fecht ◽  
M. X. Zhang ◽  
Y. A. Chang ◽  
J. H. Perepezko
Keyword(s):  
Phase Equilibria ◽  
Thermodynamic Modeling ◽  
Metastable Phase ◽  
Alloy System ◽  
System Part
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