By using tracer and sectioning techniques, the migration of 60Co was studied at 1000 to 1400C under O partial pressures of between 10-7 and 0.21atm. (table 53).
K.Hoshino, N.L.Peterson: Journal of the Physics and Chemistry of Solids, 1985, 46[2], 229-40
Table 49
Conductivity of (Co,Fe)O as a Function of O Activity
Material | Log[aO2] | (S/cm) |
(Co0.7Fe0.3)1-xO | -9.34 | 9.77 |
(Co0.7Fe0.3)1-xO | -9.19 | 10.08 |
(Co0.7Fe0.3)1-xO | -8.80 | 11.40 |
(Co0.7Fe0.3)1-xO | -7.99 | 14.51 |
continued
Table 49 (continued)
Conductivity of (Co,Fe)O as a Function of O Activity
Material | Log[aO2] | (S/cm) |
(Co0.7Fe0.3)1-xO | -6.68 | 16.09 |
(Co0.7Fe0.3)1-xO | -5.18 | 13.60 |
(Co0.7Fe0.3)1-xO | -3.82 | 10.42 |
(Co0.7Fe0.3)1-xO | -2.65 | 11.53 |
(Co0.7Fe0.3)1-xO | -1.71 | 16.24 |
(Co0.7Fe0.3)1-xO | -1.38 | 18.50 |
(Co0.8Fe0.2)1-xO | -8.86 | 2.68 |
(Co0.8Fe0.2)1-xO | -8.00 | 3.63 |
(Co0.8Fe0.2)1-xO | -6.73 | 4.66 |
(Co0.8Fe0.2)1-xO | -5.65 | 4.83 |
(Co0.8Fe0.2)1-xO | -3.96 | 4.90 |
(Co0.8Fe0.2)1-xO | -2.64 | 5.37 |
(Co0.8Fe0.2)1-xO | -1.66 | 8.28 |
(Co0.8Fe0.2)1-xO | -0.68 | 14.60 |
(Co0.8Fe0.2)1-xO | 0.0 | 31.92 |
(Co0.9Fe0.1)1-xO | -8.87 | 1.06 |
(Co0.9Fe0.1)1-xO | -8.01 | 1.34 |
(Co0.9Fe0.1)1-xO | -6.65 | 1.93 |
(Co0.9Fe0.1)1-xO | -5.26 | 2.61 |
(Co0.9Fe0.1)1-xO | -3.82 | 4.28 |
(Co0.9Fe0.1)1-xO | -3.32 | 5.29 |
(Co0.9Fe0.1)1-xO | -2.68 | 7.30 |
(Co0.9Fe0.1)1-xO | -1.68 | 12.87 |
(Co0.9Fe0.1)1-xO | -0.68 | 25.12 |
(Co0.9Fe0.1)1-xO | 0.0 | 42.11 |
(Co0.95Fe0.05)1-xO | -8.80 | 0.40 |
(Co0.95Fe0.05)1-xO | -8.00 | 0.52 |
(Co0.95Fe0.05)1-xO | -6.71 | 0.82 |
(Co0.95Fe0.05)1-xO | -5.19 | 1.30 |
continued
Table 49 (continued)
Conductivity of (Co,Fe)O as a Function of O Activity
Material | Log[aO2] | (S/cm) |
(Co0.95Fe0.05)1-xO | -3.84 | 2.65 |
(Co0.95Fe0.05)1-xO | -2.62 | 5.33 |
(Co0.95Fe0.05)1-xO | -1.66 | 9.64 |
(Co0.95Fe0.05)1-xO | -0.68 | 19.69 |
(Co0.95Fe0.05)1-xO | 0.0 | 33.28 |
(Co0.97Fe0.03)1-xO | -8.88 | 0.40 |
(Co0.97Fe0.03)1-xO | -7.98 | 0.42 |
(Co0.97Fe0.03)1-xO | -6.69 | 0.62 |
(Co0.97Fe0.03)1-xO | -5.14 | 1.20 |
(Co0.97Fe0.03)1-xO | -3.65 | 2.91 |
(Co0.97Fe0.03)1-xO | -2.65 | 5.11 |
(Co0.97Fe0.03)1-xO | -1.67 | 9.34 |
(Co0.97Fe0.03)1-xO | -0.68 | 18.46 |
(Co0.97Fe0.03)1-xO | 0.0 | 30.72 |
Table 50
Diffusivity of Co in (CoxFe1-x)3-δO4 at 1200C
as a Function of O Activity and Stoichiometry
x | log10 [a] | log10 [D (cm2/s)] |
0 | -3.23 | -7.76 |
0 | -4.68 | -8.68 |
0 | -6.98 | -9.10 |
0 | -7.84 | -8.48 |
0 | -8.84 | -7.89 |
0.1 | -2.98 | -8.21 |
0.1 | -4.00 | -8.83 |
0.1 | -6.10 | -9.31 |
0.1 | -6.87 | -8.87 |
0.1 | -8.10 | -8.08 |
continued
Table 50 (continued)
Diffusivity of Co in (CoxFe1-x)3-δO4 at 1200C
as a Function of O Activity and Stoichiometry
x | log10 [a] | log10 [D (cm2/s)] |
0.2 | -1.20 | -8.11 |
0.2 | -1.68 | -8.34 |
0.2 | -2.68 | -8.88 |
0.2 | -3.55 | -9.45 |
0.2 | -5.27 | -9.42 |
0.2 | -6.64 | -8.55 |
0.3 | -0.68 | -9.46 |
0.3 | -1.36 | -10.01 |
0.3 | -1.68 | -10.03 |
0.3 | -3.34 | -9.83 |
0.3 | -4.09 | -9.39 |
0.333 | 0 | -10.12 |
0.333 | -0.68 | -10.31 |
0.333 | -2.67 | -9.38 |
0.333 | -3.02 | -9.17 |
Table 51
Diffusivity of Fe in (CoxFe1-x)3-δO4 at 1200C
as a Function of O Activity and Stoichiometry
x | log10 [a] | log10 [D (cm2/s)] |
0 | -3.23 | -7.68 |
0 | -4.68 | -8.59 |
0 | -6.98 | -9.30 |
0 | -7.84 | -8.69 |
0 | -8.84 | -8.15 |
0.1 | -2.98 | -8.19 |
0.1 | -4.00 | -8.79 |
0.1 | -6.10 | -9.52 |
continued
Table 51 (continued)
Diffusivity of Fe in (CoxFe1-x)3-δO4 at 1200C
as a Function of O Activity and Stoichiometry
x | log10 [a] | log10 [D (cm2/s)] |
0.1 | -6.87 | -9.15 |
0.1 | -8.10 | -8.39 |
0.2 | -1.20 | -8.11 |
0.2 | -1.68 | -8.36 |
0.2 | -1.20 | -8.11 |
0.2 | -1.68 | -8.36 |
0.2 | -2.68 | -8.87 |
0.2 | -3.55 | -9.45 |
0.2 | -5.27 | -9.82 |
0.2 | -6.64 | -8.94 |
0.3 | -0.68 | -9.52 |
0.3 | -1.36 | -10.04 |
0.3 | -1.68 | -10.14 |
0.3 | -3.34 | -10.37 |
0.3 | -4.09 | -9.98 |
0.333 | 0 | -10.25 |
0.333 | -0.68 | -10.67 |
0.333 | -2.67 | -10.18 |
0.333 | -3.02 | -9.99 |
Table 52
Diffusivity of Mn in (CoxFe1-x)3-δO4 at 1200C
as a Function of O Activity and Stoichiometry
x | log10 [a] | log10 [D (cm2/s)] |
0 | -3.23 | -7.73 |
0 | -4.68 | -8.65 |
0 | -6.98 | -9.32 |
0 | -7.84 | -8.74 |
continued
Table 52 (continued)
Diffusivity of Mn in (CoxFe1-x)3-δO4 at 1200C
as a Function of O Activity and Stoichiometry
x | log10 [a] | log10 [D (cm2/s)] |
0 | -8.84 | -8.18 |
0.1 | -2.98 | -8.24 |
0.1 | -4.00 | -8.82 |
0.1 | -6.10 | -9.34 |
0.1 | -6.87 | -8.95 |
0.1 | -8.10 | -8.28 |
0.2 | -1.20 | -8.09 |
0.2 | -1.68 | -8.31 |
0.2 | -2.68 | -8.86 |
0.2 | -3.55 | -9.42 |
0.2 | -5.27 | -9.59 |
0.2 | -6.64 | -8.71 |
0.3 | -0.68 | -9.43 |
0.3 | -1.36 | -9.96 |
0.3 | -1.68 | -9.98 |
0.3 | -3.34 | -10.02 |
0.3 | -4.09 | -9.56 |
0.333 | 0 | -10.07 |
0.333 | -0.68 | -10.39 |
0.333 | -2.67 | -9.79 |
0.333 | -3.02 | -9.58 |