块状纳米材料的设计理论研究

在二元共晶Spinodal系统中 ,Spinodal波长的大小随过冷度的增加而减少 ,并存在一个最小的波长 ,此时合金的生长速度最快 .提出当过冷度足够大时 ,液态Spinodal的波长进入到纳米尺度 ,形成块状纳米材料 .由于液态的扩散较易发生 ,当波长为纳米量级时 ,Spinodal的转变时间为微秒量级 .由于液体表面张力等的影响 ,液态Spinodal的组织由网状变成微粒形态 .

Research on the Design Theory of Balk Nanomaterials

It is firstly suggested in my research that the liquid spinodal wavelength will decrease to nano scale when there is enough undercooling temperature, and the bulk nanomaterial appears. Since the diffusion procedure in liquid state easier than that of solid state, the time for spinodal diffusion is less than microseconds when the wavelength is nanao scale. Owing to the surface tension in the liquid, the morphology of spinodal will change from the interconnected to the island like.