I-Li (Iodine-Lithium)
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Supplemental Literature Review: Section III
I-Li (Iodine-Lithium) H. Okamoto
The Li-I phase diagram was unknown in [Massalski2]. [1962Dwo] measured solubility of I in LiI at 950 and 550 °C. The data points are shown in Fig. 1. The phase Table 1
boundaries in Fig. 1 illustrates the existence of a possible monotectic reaction just bellow the melting point of LiI. Table 1 shows Li-I crystal structure data.
I-Li crystal structure data
Phase
Composition, at.% I
Pearson symbol
Space group
Strukturbericht designation
Prototype
(bLi) LiI
0 50
cI2 cF8
Im3m Fm3m
A2 B1
W NaCl
0 20 40 50 60
70
Reference 1962Dwo: A.S. Dworkin, H.R. Bronstein, and M.A. Bredig, Miscibility of Metals with Salts.VI. Lithium-Lithium Halide Systems, J. Phys. Chem., 1962, 66, p 572-573
Weight Percent Iodine 80
90
1000
1962Dwo
900
L1
800
Temperature, °C
700
L1 + L2
600 500
459°C m.p.
400 300 200
LiI
180.6°C 100
(Li)
0 0
Li
10
20
30
40
50
Atomic Percent Iodine
Fig. 1 I-Li phase diagram
Journal of Phase Equilibria and Diffusion Vol. 29 No. 2 2008
207
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