Real-Time and Correlative Imaging of Localised Corrosion Events by High-Speed Atomic Force Microscopy
Real-Time and Correlative Imaging of Localised Corrosion Events by High-Speed Atomic Force Microscopy
复制标题
通过高速原子力显微镜对局部腐蚀事件进行实时相关成像
DOI：
10.1017/s1431927622008194
复制
发表时间：
2022
影响因子：
2.8
通讯作者：
Moore S
中科院分区：
文献类型：
--
作者：
Moore S
Corrosion is a degradation process that causes failure of metals and alloys across a wide range of applications and industries including nuclear power plants [1]. Key to the prevention of corrosion is understanding why and how it initiates. A large number of failures due to corrosion occur via localised mechanisms, where susceptible points in the material microstructure are preferentially attacked, such as pitting, intergranular attack or stress corrosion cracking. Understanding how localised corrosion first develops is particularly challenging as it occurs at specific locations and over small length (nanometre) and time (sub-second) scales. Many characterisation techniques lack either the spatial or temporal resolution required for in-situ observation, and often struggle to capture the original corrosion event.Contact mode high-speed atomic force microscopy (HS-AFM) is a technique capable of nanoscale imaging of surface changes in topography. These measurements can be performed in a range of liquid or gaseous environments, and with sub-second temporal resolution, making HS-AFM ideally suited for insitu localised corrosion studies [2]. The high throughput of the HS-AFM also make it capable of performing large area surface characterisation pre-and post-corrosion. Using this capability, HS-AFM may be implemented alongside other high-resolution techniques that offer complementary information for correlative analysis [2, 3].
