A Gorsky relaxation, which was associated with long-range diffusion, was detected in this metallic glass. The diffusivity behavior could be described by:

D (cm2/s) = 3 x 10-3 exp[-0.25(eV)/kT]

It was deduced that the H atoms occupied interstitial sites which had a markedly asymmetrical nature.

Gorsky Relaxation and Hydrogen Diffusion in the Metallic Glass Pd80Si20. B.S.Berry, W.C.Pritchet: Physical Review B, 1981, 24[4], 2299-303

 

Table 154

Parameters for H Diffusion in Pd-Si Amorphous Alloys

 

Material

H/M

Do (cm2/s)

E (kcal/mol)

Pd83Si17

0.000205

0.0397

8.22

Pd83Si17

0.00043

0.0222

7.80

Pd83Si17

0.000861

0.0124

7.37

Pd83Si17

0.0034

0.0113

7.09

Pd83Si17

0.0066

0.00463

6.38

Pd83Si17

0.013

0.00343

5.92

Pd81Si19

0.0000501

0.0079

7.46

Pd81Si19

0.000208

0.0087

7.48

Pd81Si19

0.00052

0.00716

7.28

Pd81Si19

0.00312

0.00373

6.53

Pd81Si19

0.007

0.00433

6.46

Pd81Si19

0.0105

0.00202

5.79