A new correlation between electronic parameters and glass forming ability of metallic alloys

Abstract

A quantitative correlation between the glass forming ability and the electronic parameters of metallic alloys is presented. It is found that the critical cooling rate for glass formation (R _c) correlates well with the average work function difference (Δφ) and the average electron density difference () among the constituent elements of the investigated alloys. A correlation coefficient (R ²) of 0.77 was found for 68 alloys in 30 metallic systems, which is better than the previous proposed correlation between the glass forming ability and the average Pauling electronegativity difference.

Keywords:

• work function
• electron density
• amorphous alloys
• metallic glasses
• synthesis

Acknowledgement

This work was financially supported by FAPESP (Brazil).