The Ag concentration profiles in ribbon-samples of the amorphous alloys were determined by using Auger electron spectroscopy and ion-beam sputtering. It was found
that the rate of Ag diffusion was increased by cold-working (table 203). This was attributed to the introduction of a large number of structural defects by the deformation.
D.Akhtar, R.D.K.Misra: Scripta Metallurgica, 1985, 19[10], 1195-8
Table 203
Diffusivity of Ag in Ni60Nb40 at 773K
as a Function of Mechanical Treatment
Treatment | D (m2/s) |
as-quenched | 2.8 x 10-19 |
10% cold-rolled | 4.2 x 10-19 |
30% cold-rolled | 7.0 x 10-19 |
fractured | 1.2 x 10-19 |