论文部分内容阅读
场离子显微镜是一种新的分析手段,通过成像气体在高电场中电离成像,可直接观察金属表面原子的排列,使用原子探针场离子显微镜可以对单个原子进行质量分析,因而在金属学领域得到广泛的应用。例如国外在晶格缺陷、晶界、相变(包括析出、有序—无序转变、周期结构、马氏体相变)等方面都取得了可喜的成果。本文主要介绍场离子显微镜的基本原理及近十年国外在金属学方面的应用情况。
Field ion microscopy is a new analytical tool that allows the direct observation of the arrangement of atoms on a metal surface by ionizing imaging gas in a high electric field. Mass spectrometry of individual atoms can be performed using an atom probe field ion microscope, and thus in the field of metallurgy Get a wide range of applications. For example, foreign countries in the lattice defects, grain boundaries, phase transformation (including precipitation, order - disorder transformation, periodic structure, martensitic transformation) have made gratifying achievements. This article mainly introduces the basic principle of field ion microscope and the application of metallurgy in foreign countries in recent ten years.