DEVELOPMENT AND APPLICATION OF ATOM PROBE TOMOGRAPHY

The atom probe tomography(APT) is a developing technique to characterize and analyze materials with atomic-scale spatial resolution and high analytical sensitivity.Recently,the substantial progress has been made in technical improvement of APT equipment and data analysis software.In this paper,the new development of APT is introduced,and its unique apphcations in characterization of traditional structural materials of high-strength low-alloy steel and Al alloy are discussed.