The migration of Au in metallic glasses was studied by means of Rutherford back-scattering spectrometry and Auger electron spectroscopy. It was found that the data (table 175) could be described by:

D(m2/s) = 1.51 x 10-8exp[-1.37(eV)/kT]

E.Majkova, V.Bohac, S.Luby, R.Sandrik, M.Vesely: Physica Status Solidi A, 1990, 120[2], 371-7

 

Table 174

Ternary Interdiffusion Parameters for the γ-Phase of the Ni-Al-Ti System

 

Al (wt%)

Ti (wt%)

Coefficient

Do (m2/s)

E (kJ/mol)

1.3

1.7

DAlAlNi

2.8 x 10-4

270

1.5

1.3

DAlAlNi

1.9 x 10-4

266

1.8

0.8

DAlAlNi

1.8 x 10-4

265

2.0

0.4

DAlAlNi

1.2 x 10-4

260

2.0

2.4

DAlAlNi

2.1 x 10-4

266

2.4

1.9

DAlAlNi

1.4 x 10-4

261

continued

Table 174 (continued)

Ternary Interdiffusion Parameters for the γ-Phase of the Ni-Al-Ti System

 

Al (wt%)

Ti (wt%)

Coefficient

Do (m2/s)

E (kJ/mol)

3.0

1.3

DAlAlNi

1.7 x 10-4

262

3.6

0.7

DAlAlNi

2.3 x 10-4

265

1.3

1.7

DAlTiNi

3.9 x 10-5

272

1.5

1.3

DAlTiNi

7.2 x 10-5

278

1.8

0.8

DAlTiNi

2.3 x 10-5

263

2.0

0.4

DAlTiNi

4.6 x 10-5

268

2.0

2.4

DAlTiNi

4.5 x 10-4

294

2.4

1.9

DAlTiNi

1.2 x 10-4

277

3.0

1.3

DAlTiNi

4.6 x 10-5

262

3.6

0.7

DAlTiNi

1.1 x 10-3

296

1.3

1.7

DTiAlNi

1.9 x 10-4

275

1.5

1.3

DTiAlNi

1.2 x 10-4

274

1.8

0.8

DTiAlNi

3.6 x 10-5

264

2.0

0.4

DTiAlNi

3.7 x 10-5

268

2.0

2.4

DTiAlNi

3.0 x 10-4

278

2.4

1.9

DTiAlNi

4.1 x 10-4

284

3.0

1.3

DTiAlNi

2.3 x 10-5

256

3.6

0.7

DTiAlNi

5.1 x 10-4

294

1.3

1.7

DTiTiNi

2.8 x 10-4

269

1.5

1.3

DTiTiNi

1.7 x 10-4

264

1.8

0.8

DTiTiNi

1.2 x 10-4

261

2.0

0.4

DTiTiNi

2.3 x 10-4

270

2.0

2.4

DTiTiNi

3.9 x 10-4

272

2.4

1.9

DTiTiNi

3.7 x 10-4

272

3.0

1.3

DTiTiNi

1.5 x 10-5

263

3.6

0.7

DTiTiNi

2.3 x 10-4

269


Table 175

Diffusion of Au in  Ni70B20Si3

 

Temperature (C)

D (m2/s)

442

4.58 x 10-22

446

9.98 x 10-22

460

4.52 x 10-21

466

4.95 x 10-21

484

8.93 x 10-21

502

1.71 x 10-20

506

1.82 x 10-20