Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/20119
Title: | Active corrosion protection coating for a ZE41 magnesium alloy created by combining PEO and sol-gel techniques |
Author: | Ivanou, D. K. Yasakau, K. A. Kallip, S. Lisenkov, A. D. Starykevich, M. Lamaka, S. V. Ferreira, M. G. S. Zheludkevich, M. L. |
Keywords: | PLASMA ELECTROLYTIC OXIDATION AZ31 MG ALLOY COMPOSITE COATINGS RESISTANCE AA2024 FILMS IMPROVEMENT CONVERSION LAYER |
Issue Date: | 2016 |
Publisher: | ROYAL SOC CHEMISTRY |
Abstract: | An active protective coating for ZE41 magnesium alloy was produced by sealing an anodic layer, loaded with 1,2,4-triazole, with a sol-gel film. An anodic oxide layer was formed using PEO in a silicate-fluoride alkaline solution. This thin (1.8 mu m) porous PEO layer was impregnated with corrosion inhibitor 1,2,4-triazole and sealed with a silica-based sol-gel film modified with titanium oxide. For the first time it was demonstrated that this relatively thin PEO-based composite coating revealed high barrier properties and provided superior protection against corrosion attack during 1 month of continuous exposure to 3% NaCl. A scanning vibrating electrode technique showed a sharp decrease (100 times) of corrosion activity in micro defects formed in the 1,2,4-triazole doped composite coating, when compared to blank samples. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20119 |
DOI: | 10.1039/c5ra22639b |
ISSN: | 2046-2069 |
Publisher Version: | 10.1039/c5ra22639b |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Active corrosion protection coating for a ZE41 magnesium alloy created by combining PEO and sol-gel techniques_10.1039c5ra22639b.pdf | 824.65 kB | Adobe PDF | View/Open |
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