科研之友
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摘要
A new bulk Zr-Al-Ni-Cu amorphous alloy has been designed and prepared according to the rule of constant valence electron concentrations (e/a), which satisfies e/a=1.38. The DeltaT(x) and T-rg, characterizing the glass formation ability, reach 107 K and 0.58-0.64, respectively. The best composition of the amorphous alloy is found at Zr60.6Al11.4Ni15.5Cu12.5, which possesses a glass forming ability and a thermal stability superior to those of the Inoue alloy. It is also pointed out that at e/a=1.38, the alloy with average atomic size R-a=0-1486 nm has a better glass formation ability than those with R-a=0-1496 run and 0.1506 mn.
