The diffusivity of H at temperatures of between 299 and 322.5K was measured by using an electrochemical method, and uncoated or Pd-coated Cu foils (table 18). These data, and previous results, indicated that there was no deviation from the classical Arrhenius behavior at temperatures of between 1200 and 300K.

T.Ishikawa, R.B.McLellan: Journal of the Physics and Chemistry of Solids, 1985, 46[4], 445-7

 

 

 

Table 18

Diffusivity of H in Cu Foils

 

Specimen

Temperature (K)

D (m2/s)

coated

299.0

2.60 x 10-14

coated

307.0

9.11 x 10-14

coated

308.0

3.55 x 10-14

uncoated

299.0

3.76 x 10-14

uncoated

300.5

2.40 x 10-14

uncoated

301.0

5.17 x 10-14

uncoated

306.0

4.41 x 10-14

uncoated

314.0

1.09 x 10-13

uncoated

314.5

9.89 x 10-14

uncoated

322.5

1.56 x 10-13