Secondary ion mass spectroscopy and nuclear microprobe analysis were used to measure 18O diffusion profiles. It was found that both methods furnished similar results for O volume diffusivity (1.5 x 10-16 to 3 x 10-16cm2/s) and O intergranular diffusion (4 x 10-21 to 7 x 10-21cm2/s). These Ds values were an order of magnitude smaller than those for the phase.
C.Mons, G.Moulin, L.Priester, G.Rautureau, E.Beauprez, J.Gosset, P.Trocellier: Materials Science Forum, 1993, 126-128, 379-82
Table 83
Bulk Self-Diffusivity of Ni in NiAl
Temperature (K) | Ni (at%) | D (m2/s) |
1106 | 46.8 | 7.11 x 10-19 |
1194 | 46.8 | 6.71 x 10-18 |
1280 | 46.8 | 4.32 x 10-17 |
1376 | 46.8 | 3.40 x 10-16 |
1455 | 46.8 | 1.19 x 10-15 |
1577 | 46.8 | 1.81 x 10-14 |
1051 | 48.7 | 1.55 x 10-19 |
1092 | 48.7 | 4.83 x 10-19 |
1106 | 48.7 | 6.85 x 10-19 |
1155 | 48.7 | 2.92 x 10-18 |
1198 | 48.7 | 5.89 x 10-18 |
1231 | 48.7 | 1.23 x 10-17 |
1267 | 48.7 | 3.53 x 10-17 |
1327 | 48.7 | 1.20 x 10-16 |
1392 | 48.7 | 3.71 x 10-16 |
1448 | 48.7 | 1.07 x 10-15 |
1475 | 48.7 | 1.95 x 10-15 |
1498 | 48.7 | 2.75 x 10-15 |
1542 | 48.7 | 5.88 x 10-15 |
continued
Table 83 (continued)
Bulk Self-Diffusivity of Ni in NiAl
Temperature (K) | Ni (at%) | D (m2/s) |
1577 | 48.7 | 1.55 x 10-14 |
1629 | 48.7 | 3.81 x 10-14 |
1051 | 49.7 | 1.29 x 10-19 |
1092 | 49.7 | 7.37 x 10-19 |
1106 | 49.7 | 8.58 x 10-19 |
1155 | 49.7 | 3.89 x 10-18 |
1198 | 49.7 | 8.28 x 10-18 |
1231 | 49.7 | 1.14 x 10-17 |
1267 | 49.7 | 4.31 x 10-17 |
1327 | 49.7 | 1.31 x 10-16 |
1392 | 49.7 | 4.35 x 10-16 |
1448 | 49.7 | 1.05 x 10-15 |
1475 | 49.7 | 1.49 x 10-15 |
1498 | 49.7 | 2.31 x 10-15 |
1542 | 49.7 | 6.66 x 10-15 |
1577 | 49.7 | 1.47 x 10-14 |
1629 | 49.7 | 3.70 x 10-14 |
1051 | 50.0 | 1.79 x 10-19 |
1055 | 50.0 | 2.08 x 10-19 |
1092 | 50.0 | 3.32 x 10-19 |
1106 | 50.0 | 6.91 x 10-19 |
1115 | 50.0 | 5.70 x 10-19 |
1155 | 50.0 | 3.28 x 10-18 |
1176 | 50.0 | 3.26 x 10-18 |
1198 | 50.0 | 8.82 x 10-18 |
continued
Table 83 (continued)
Bulk Self-Diffusivity of Ni in NiAl
Temperature (K) | Ni (at%) | D (m2/s) |
1205 | 50.0 | 6.39 x 10-18 |
1207 | 50.0 | 1.35 x 10-17 |
1231 | 50.0 | 1.28 x 10-17 |
1231 | 50.0 | 1.63 x 10-17 |
1240 | 50.0 | 2.13 x 10-17 |
1267 | 50.0 | 4.37 x 10-17 |
1281 | 50.0 | 4.64 x 10-17 |
1317 | 50.0 | 1.40 x 10-16 |
1327 | 50.0 | 1.46 x 10-16 |
1360 | 50.0 | 2.55 x 10-16 |
1392 | 50.0 | 4.88 x 10-16 |
1423 | 50.0 | 9.56 x 10-16 |
1448 | 50.0 | 1.17 x 10-15 |
1475 | 50.0 | 1.68 x 10-15 |
1498 | 50.0 | 2.68 x 10-15 |
1542 | 50.0 | 7.68 x 10-15 |
1577 | 50.0 | 1.35 x 10-14 |
1629 | 50.0 | 4.35 x 10-14 |
1051 | 51.8 | 2.90 x 10-19 |
1092 | 51.8 | 4.75 x 10-19 |
1106 | 51.8 | 1.39 x 10-18 |
1155 | 51.8 | 3.05 x 10-18 |
1198 | 51.8 | 2.05 x 10-17 |
1231 | 51.8 | 2.68 x 10-17 |
1267 | 51.8 | 7.20 x 10-17 |
continued
Table 83 (continued)
Bulk Self-Diffusivity of Ni in NiAl
Temperature (K) | Ni (at%) | D (m2/s) |
1327 | 51.8 | 2.32 x 10-16 |
1392 | 51.8 | 8.84 x 10-16 |
1448 | 51.8 | 1.81 x 10-15 |
1475 | 51.8 | 2.70 x 10-15 |
1498 | 51.8 | 3.83 x 10-15 |
1542 | 51.8 | 1.07 x 10-14 |
1577 | 51.8 | 2.39 x 10-14 |
1629 | 51.8 | 6.21 x 10-14 |
1051 | 54.6 | 1.33 x 10-18 |
1092 | 54.6 | 1.47 x 10-18 |
1106 | 54.6 | 4.58 x 10-18 |
1155 | 54.6 | 4.88 x 10-18 |
1198 | 54.6 | 3.81 x 10-17 |
1231 | 54.6 | 9.73 x 10-17 |
1267 | 54.6 | 1.16 x 10-16 |
1327 | 54.6 | 4.23 x 10-16 |
1392 | 54.6 | 1.62 x 10-15 |
1448 | 54.6 | 6.50 x 10-15 |
1475 | 54.6 | 5.66 x 10-15 |
1498 | 54.6 | 9.85 x 10-15 |
1542 | 54.6 | 2.77 x 10-14 |
1577 | 54.6 | 4.04 x 10-14 |
1629 | 54.6 | 9.76 x 10-14 |
1194 | 56.6 | 8.20 x 10-17 |
1280 | 56.6 | 4.25 x 10-16 |
continued
Table 83 (continued)
Bulk Self-Diffusivity of Ni in NiAl
Temperature (K) | Ni (at%) | D (m2/s) |
1376 | 56.6 | 1.90 x 10-15 |
1455 | 56.6 | 5.25 x 10-15 |
1577 | 56.6 | 6.29 x 10-14 |
Figure 49
Diffusivity of Ni in NiAl