Characterizing the microstructure and mechanical and electrochemical properties of novel ceramic/polymer sandwich structural coatings
| Autor: | H.M Hawthorne, Yongsong Xie, Z. Tang, Tom Troczynski, G. Li, M. Thammachart, Quanzu Yang, Anne Neville |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Composite number mechanical properties engineering.material Corrosion composite sol-gel coatings Coating sandwich structure coatings Materials Chemistry Ceramic Composite material chemistry.chemical_classification Surfaces and Interfaces General Chemistry Polymer electrochemical properties Condensed Matter Physics Microstructure Surfaces Coatings and Films chemistry polymer bond layer visual_art Conversion coating visual_art.visual_art_medium engineering Layer (electronics) |
| Zdroj: | Surface and Coatings Technology. 200:5986-5994 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2005.09.024 |
| Popis: | In this study, a polymer bond layer was incorporated between the chemically bonded composite sol–gel coating (CB-CSG) and stainless steel substrate to form sandwich structure coatings for improving the coating's corrosion resistance in aqueous solutions. The low processing temperatures of CB-CSG coatings and a specified high temperature polymer (siloxane) make it possible to prepare polymer/CB-CSG composite coatings with an unusual combination of mechanical properties and corrosion resistance. Compared with non-polymer CB-CSG coatings, the ceramic/polymer sandwich coatings exhibit lower hardness and elastic modulus due to the infiltration of polymer into the CB-CSG ceramic coatings. However, the polymer layer of the sandwich structure coatings may remarkably reduce the residual stress in the coatings. Electrochemical characterization and salt spray tests indicate that the polymer layer is very efficient for improving the overall corrosion resistance. |
| Databáze: | OpenAIRE |
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