Phase Diagram of LiF-Li3PO4 System: A New Mechanism of Heterovalent Anionic Isomorphism

MRS Advances ◽  
2017 ◽  
Vol 3 (23) ◽  
pp. 1309-1317
Author(s):  
G.V. Zimina ◽  
M. Tsygankova ◽  
M. Sadykova ◽  
F.M. Spiridonov ◽  
V.V. Fomichev ◽  
...  

ABSTRACTThe phase diagram of LiF-Li3PO4 system is studied. The eutectic coordinates are 800±5°C, 8±1 mol% Li3PO4. A region of a solid solution based on lithium phosphate with a length of up to 11±2 mol% LiF was discovered. It is assumed that there is heterovalent isomorphism where anionic tetrahedron (PO4)3- is replaced by tetrahedron (LiF4)3-.

2003 ◽  
Vol 10 (04) ◽  
pp. 677-683 ◽  
Author(s):  
E. B. Hannech ◽  
N. Lamoudi ◽  
N. Benslim ◽  
B. Makhloufi

Intermetallic formation at 425°C in the aluminum–copper system has been studied by scanning electron microscopy using welded diffusion couples. Several Al–Cu phases predicted by the equilibrium phase diagram of the elements and voids taking place in the diffusion zone have been detected in the couples. The predominant phases were found to be Al 2 Cu 3 and the solid solution of Al in Cu, α. The growth of the intermetallic layer obeyed the parabolic law.


2018 ◽  
Vol 383 ◽  
pp. 31-35 ◽  
Author(s):  
Alexey Rodin ◽  
Nataliya Goreslavets

The study of diffusion processes in the aluminum - copper system was carried out at the temperature 350 and 520 °C. Special attention was paid on the chemical composition of the system near Al/Cu interface. It was determined that the intermediate phases in the system, corresponding to the equilibrium phase diagram, were not formed at low temperature. At high temperature the intermediate phases forms starting with Cu - rich phases. In both cases supersaturated solid solution of copper in aluminum could be observed near the interface.


CrystEngComm ◽  
2020 ◽  
Vol 22 (14) ◽  
pp. 2537-2542
Author(s):  
Lixing Song ◽  
Fucheng Leng ◽  
Koen Robeyns ◽  
Tom Leyssens

Quaternary phase diagram of ionic cocrystals with solid solution formation is generated and dissolution surface is depicted clearly by contour lines.


RSC Advances ◽  
2019 ◽  
Vol 9 (20) ◽  
pp. 11151-11159 ◽  
Author(s):  
Frederike Lehmann ◽  
Alexandra Franz ◽  
Daniel M. Többens ◽  
Sergej Levcenco ◽  
Thomas Unold ◽  
...  

The phase diagram elucidates structural changes and phase separation effects, induced by halide substitution in hybrid perovskite MAPb(I,Br)3 solid solution.


1989 ◽  
Vol 62 (13) ◽  
pp. 1524-1527 ◽  
Author(s):  
E. B. Sirota ◽  
H. D. Ou-Yang ◽  
S. K. Sinha ◽  
P. M. Chaikin ◽  
J. D. Axe ◽  
...  

2016 ◽  
Vol 42 (5) ◽  
pp. 6100-6106 ◽  
Author(s):  
Q.R. Yao ◽  
Y.H. Shen ◽  
P.C. Yang ◽  
H.Y. Zhou ◽  
G.H. Rao ◽  
...  

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