空间分辨技术在金属腐蚀原位监测中的应用

Application of Spatial-resolution Technology for In-situ Monitoring of Metal Corrosion

综述了腐蚀领域几种经典的空间分辨技术,并详细探讨了每一种技术的工作原理、优缺点及其在金属腐蚀原位监测领域的应用现状和发展前景。

Corrosion is one of the main causes of metal material failure.In corrosion research,it is difficult to obtain accurate information on the corrosion evolution.The development of spatial-resolution technology enables the in-situ observation of metal corrosion processes to be realized.By combining the spatial-resolution technology and electrochemical techniques,more microscopic metal corrosion information can be obtained,which facilitates more accurate acquisition of corrosion information and provides reliable support for the illustration of corrosion mechanism.This paper reviews several classical spatial-resolution techniques in the field of corrosion in terms their working principle,advantages and disadvantages etc.The industrial CCD camera,digital holographic surface imaging technology,X-ray computed tomography,optical microscope,scanning electron microscope,atomic force microscope and transmission electron microscope are introduced.The application status and development prospects of each technology in the field of in-situ monitoring of metal corrosion are discussed.Finally,these spatial-resolution techniques are compared and corresponding recommendations for use are proposed in the review.