摘要
高能球磨是合成纳米亚稳相的一种重要方法。利用高能球磨可以合成纳米晶、金属间化合物、非晶相及过饱和固溶相等多种纳米亚稳相。在球磨过程中,被研磨物质晶粒尺寸逐步细化,并产生大量的界面、位错等结构缺陷。这些结构缺陷在动力学上为原子的集聚和扩散的一条低能通道,为新相的形核提供了基础。
High-energy ball-milling is an important method for preparing nano-metastable phases. Many nano-metastable phases could be synthesized by high-energy ball-milling, such as nanocrystalline, intermetallic compounds, a morphous and supersaturated solid solution. During the process of milling, the grain size would be refined, and the density of structure defects （new interfaces/dislocations） would increase. In the opinion of dynamics, these changes in structure would offer a low energy passage for the segregation and diffusion of atoms in milled materials and it would be a basement for the formation of new phases.
出处
《金属功能材料》
CAS
2009年第2期51-54,共4页
Metallic Functional Materials
基金
福建省自然科学基金计划资助项目(项目编号:E0810024)
福建省大学生创新性试验计划项目
集美大学科研基金资助项目(ZQ2007014)
集美大学学生科研立项基金项目
关键词
高能球磨
纳米亚稳相
界面
扩散
high-energy ball milling
nano-metastable phase
interface
diffusion
