| Titre : |
Preparation and characterization of organic-inorganic hybrid coatings for improving the insulation properties of electrical steel |
| Type de document : |
texte imprimé |
| Auteurs : |
Bong-Gu Kim, Auteur ; Hyun-Hee Choi, Auteur ; Hye-Yeong Park, Auteur ; Min Serk Kwon, Auteur ; Yun-Ki Byeun, Auteur ; Sung Kang, Auteur ; Yeon-Gil Jung, Auteur ; Jung-Hun Son, Auteur ; SeungCheol Yang, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
p. 1383-1393 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Dioxyde de silicium
Dioxyde de titane
Dispersions et suspensions
Isolants électriques
Matériaux hybrides
Métaux -- Revêtements protecteurs
Oxydes de chrome
Réaction de couplage
Rugosité
Silanes
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Phosphate has been used as a coating agent in various fields, such as electrical steel (ES), because of its excellent electrical insulation and corrosion resistance. Although the insulating properties of a phosphate coating can significantly improve the iron loss of the ES sheet, a new coating material to enhance the performance of the ES sheet further should be developed. In this study, we synthesized organic–inorganic hybrid coating agents with superior insulation compared to that of the conventional phosphate coating agent. Inorganic particles with excellent insulating properties (SiO2, TiO2, and Cr2O3) and silane coupling agents were used as starting materials. The good surface modification of inorganic particles by silane coupling agents with appropriate solvent content in the coating agent led to good dispersion stability of the coating agent. Homogeneous dispersion of the coating agent was attributed to the good surface roughness of the hybrid materials coated on the ES. Finally, when the hybrid coating agent with optimized composition was applied to the ES, the insulation property of the hybrid coating (< 100 mA) was superior compared to that of the conventional phosphate coating (~ 200 mA), and corrosion resistance was also excellent. |
| Note de contenu : |
- MATERIALS AND METHODS :
- Preparation of organic-inorganic hybrid coating agent
- Dispersion stability and evaluation of the properties of organic–inorganic hybrid coatings
- Characteristics of the electrical steel coated with organic–inorganic hybrid coating agents
- RESULTS AND DISCUSSION :
- Characteristics of organic-inorganic hybrid coating agents
- Evaluation of the characteristics of the electrical steel coated with the organic–inorganic hybrid coating agent
- Table 1 : Compositions of the organic–inorganic hybrid coating agents |
| DOI : |
https://doi.org/10.1007/s11998-022-00751-6 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-022-00751-6.pdf?pdf=button% [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39723 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 4 (07/2023) . - p. 1383-1393
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