[article]
| Titre : |
Recent trends in coatings for high temperature applications |
| Type de document : |
texte imprimé |
| Auteurs : |
A. S. Khanna, Auteur ; A. K. Pattanaik, Auteur |
| Année de publication : |
1998 |
| Article en page(s) : |
p. 123-135 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Many components, operating at high temperatures need additional protection to resist the aggressive environment. This is usually provided by coatings which impart excellent corrosion resistance by forming a protective alumina, chromia or silica scale. The requirement of coating varies from one application to the other, depending upon the environment, whether it is oxidizing, sulphidizing or in the presence of salt deposits. The coatings at high temperature, must have low reaction rates with the environment, and also remain adgerent and form protective oxides at the temperature of operation. Most of these coatings are divided into three main categories, conventional coatings, modified coatings and advances coatings. Conventional coatings such as aluminide, silicides are very common, fail in aggressive environments. Advanced coatings are by Vacuum plasma method, HVOF, laser surface alloying, plasma powder welding and ion beam assisted coatings. Laser surface alloying is being considered as the most versatile technique which can be used to make high performance surface alloys. This helps in saving huge costs of costly materials, which are un-necessarily used in bulk alloying at the same time the processing does not interfere with the bulk properties. |
| Note de contenu : |
- Classification of various coatings : - Physical vapour deposition methods – Diffusion coatings – High Velocity Oxyfuel Coating (HVOF) – Advanced coatings |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13127 |
in PAINTINDIA > Vol. XLVIII, N° 3 (03/1998) . - p. 123-135
[article]
|
Aller sur edunet
Accueil
Ajouter le résultat dans votre panier Affiner la rechercheRecent trends in coatings for high temperature applications / A. S. Khanna in PAINTINDIA, Vol. XLVIII, N° 3 (03/1998)
