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

摘要

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 (Δn_(ws)~(1/3)) among the constituent elements of the investigated alloys. A correlation coefficient (R2) 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.