| Journal: | Materials research |
| Database: | PERIÓDICA |
| System number: | 000312914 |
| ISSN: | 1516-1439 |
| Authors: | Souza, Maria Eliziane Pires de1 Freire, Celia Marina de Alvarenga Ariza, Edith2 Rocha, Luis Augusto Ballester, Margarita3 Yoshida, Inez Valeria Pagotto4 |
| Institutions: | 1Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica, Campinas, Sao Paulo. Brasil 2Universidade do Minho, Guimaraes. Portugal 3Universidade Estadual de Campinas, Instituto de Fisica, Campinas, Sao Paulo. Brasil 4Universidade Estadual de Campinas, Instituto de Quimica, Campinas, Sao Paulo. Brasil |
| Year: | 2006 |
| Season: | Ene-Mar |
| Volumen: | 9 |
| Number: | 1 |
| Pages: | 59-64 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Nota breve o noticia |
| Approach: | Experimental |
| English abstract | The development of hybrids materials has been extensively investigated in recent years. The combination of a wide variety of compositions and production processes had permitted the use of these materials in different applications like coatings for corrosion protection of metals. In this work organic-inorganic hybrid materials have been prepared from the hydrolysis of tetraethylorthosilicate and silanol-terminated polidymetilmetoxysilane using a sol-gel process. These materials have been applied on galvanized steel and on steel electroplated with a ZnFe. In order to evaluate the degradation behavior of these coatings, electrochemical techniques (Electrochemical Impedance Spectroscopy and Potentiodynamic Polarization) were used. EIS data was fitted to an equivalent circuit from which the electrochemical parameters were obtained. Results show a good protective character of the hybrid films, when compared with uncovered specimens. The overall performance of the coating systems appears to be highly dependent on the kind of metallic coating applied to the steel |
| Disciplines: | Ingeniería, Química |
| Keyword: | Ingeniería de materiales, Química industrial, Recubrimientos, Acero, Materiales híbridos, Propiedades mecánicas, Corrosión |
| Keyword: | Engineering, Chemistry, Materials engineering, Industrial chemistry, Coatings, Steel, Hybrid materials, Mechanical properties, Corrosion |
| Full text: | Texto completo (Ver HTML) |
