Some Iron-Based Metallic Glasses Studied by Positron Annihilation.

摘要

The Fe sub 40 Ni sub 40 B sub 16 P sub 4 , Fe sub 40 Ni sub 40 P sub 14 B sub 6 , Fe sub 80 B sub 20 , Fe sub 32 Ni sub 36 Cr sub 14 P sub 12 B sub 6 iron-based glassy systems were investigated by positron annihilation methods. Regarding the parameters measured, a pronounced difference in the values referring to amorphous and crystalline phases, respectively, was found for Fe sub 80 B sub 20 only. The presence of trapping centres in the amorphous state of Fe sub 40 Ni sub 40 P sub 14 B sub 6 is assumed on the basis of measurements studying the dependence of the annihilation parameters on the heat-treating temperature as compared with results for well-annealed and deformed crystalline pure metals. (Atomindex citation 12:586465)