Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels
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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier BV
2020
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| Online Access: | https://hdl.handle.net/1721.1/128440 |
| _version_ | 1811087658139516928 |
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| author | Cui, Yuehua Paxson, Adam T Zhang, Xianghua Tu, Qiang Varanasi, Kripa |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Cui, Yuehua Paxson, Adam T Zhang, Xianghua Tu, Qiang Varanasi, Kripa |
| author_sort | Cui, Yuehua |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T13:49:57Z |
| format | Article |
| id | mit-1721.1/128440 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:49:57Z |
| publishDate | 2020 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1284402022-09-28T16:29:47Z Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels Cui, Yuehua Paxson, Adam T Zhang, Xianghua Tu, Qiang Varanasi, Kripa Massachusetts Institute of Technology. Department of Mechanical Engineering 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. 2020-11-10T16:54:50Z 2020-11-10T16:54:50Z 2019-04 2019-02 2020-08-11T18:32:47Z Article http://purl.org/eprint/type/JournalArticle 1388-2481 https://hdl.handle.net/1721.1/128440 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 en 10.1016/j.elecom.2019.02.021 Electrochemistry Communications Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier BV Elsevier |
| spellingShingle | Cui, Yuehua Paxson, Adam T Zhang, Xianghua Tu, Qiang Varanasi, Kripa Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels |
| title | Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels |
| title_full | Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels |
| title_fullStr | Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels |
| title_full_unstemmed | Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels |
| title_short | Study of the relationship between the crystal structure and micro-nano morphology of anodized stainless steels |
| title_sort | study of the relationship between the crystal structure and micro nano morphology of anodized stainless steels |
| url | https://hdl.handle.net/1721.1/128440 |
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