Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels
Name
1-s2.0-S1388248119300578-main.pdf
Description
Published version
Size
1.66 MB
Format
Adobe PDF
Checksum (MD5)
b6530228abd361cef1eae1cc1856dd2b
Author(s)
Cui, Yuehua
Paxson, Adam T
Zhang, Xianghua
Tu, Qiang
Varanasi, Kripa
Date Issued
April 2019
Journal
Electrochemistry Communications
Publisher
Elsevier BV
Citation
Cui, Yuehua et al. "Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels." Electrochemistry Communications 101 (April 2019): 109-114. © 2019 The Authors
Version
Final published version
Abstract
In this work, we found that stainless steels with different crystal structures generated two new surface micro-nano morphologies after anodization. The surface morphologies were observed by field emission scanning electron microscopy (FE-SEM) and atomic force microscopy (AFM). Element identification and quantitative analysis of each element were carried out using energy dispersive X-ray spectroscopy (EDS). Anodized stainless steel with a face-centered cubic crystal structure (SS-fcc) exhibits 45° grooves along the crystal edges while stainless steel with a body-centered cubic structure (SS-bcc) has wedges protruding out of the anodized surface. The crystal structures and the percentage of crystal planes of SS-fcc and SS-bcc were characterized using X-ray diffraction (XRD) before and after anodization. It was observed that different crystal facets of SS-fcc and SS-bcc disappear at different rates during anodization. This explains the different micro-nano morphologies observed during the anodization process. It is concluded that different crystal planes have different anodization properties and the degree of disappearance of the crystal plane is consistent with its energy order.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.elecom.2019.02.021
