B-Ca (Boron-Calcium)
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Supplemental Literature Review: Section III
B-Ca (Boron-Calcium) H. Okamoto
Reference
The B-Ca phase diagram in [Massalski2] was schematic. Figure 1 shows the B-Ca phase diagram calculated by [2007Sha]. The first principle calculation was employed in determining the thermodynamic parameters of the phases involved.
2007Sha: S. Shang, T. Wang, and Z.K. Liu, Thermodynamic Modeling of the B-Ca, B-Sr, and B-Ba Systems, Calphad, 2007, 31, p 286-291
Weight Percent Calcium 0 10 20 30
40
50
60
70
80
90
100
4000 3907°C
G L1 3162°C 0.95
95.4
2075°C
2092°C 2000
B6Ca
Temperature, °C
3000
1503°C 98.4
1494°C
L2 1000
842°C
842°C
(βB)
(βCa)
443°C
443°C
(αCa) 0
B
10
20
30
40
50
60
70
80
Atomic Percent Calcium
90
100
Ca
Fig. 1 B-Ca phase diagram
Journal of Phase Equilibria and Diffusion Vol. 29 No. 4 2008
379
